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SNAP PAC R-SERIES CONTROLLER USER'S GUIDE

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1. CAUTION If you hold down the RESET button longer than the time needed to restore the factory default settings the controller will restart in Failsafe Bootloader mode This is a diagnostic mode that you don t need to access unless you are troubleshooting a problem with Opto 22 Product Support If your controller SNAP PAC R Series Controller User s Guide CHAPTER 4 MAINTENANCE AND TROUBLESHOOTING restarts in Failsafe Bootloader mode simply cycle power to the device This performs the simple reset described above and leaves the controller ready to load a new strategy Loading New Firmware Fach SNAP PAC R series controller contains firmware sometimes referred to as the kernel which is similar to an operating system If the firmware should become damaged or if a new version of the firmware is released you can load new firmware to the controller following instructions in the PAC Manager User s Guide Setting Time and Date The SNAP PAC R series controller s built in clock is set at the factory To change the time and date see the instructions in the PAC Manager Users Guide Blink Codes See also Connectors and LEDs on page 33 STAT LED The STAT LED on the top of a SNAP PAC R series controller uses blink codes to indicate status conditions The blink codes can be useful during operation and in troubleshooting If the STAT LED is on and remains green it indicates that a flowchart is running and a user task is bei
2. Power requirements 5 0 5 2 VDC 1 2A Environmental Operating temperature Storage temperature Humidity Software PAC Project Basic PAC Project Profes sional 0 C to 60 C 40 C to 85 C 0 to 95 relative humidity non condensing Includes programming HMI software and configuration software included with purchase of controller PAC Project Basic plus OPC 2 0 compliant OPC server OptoControl strategy and OptoDisplay project importing and Ethernet link redundancy or network segmenting support Other features Multiple protocol support including TCP IP FTP Modbus TCP SNMP OptoMMP and SMTP e Built in I O processor Real time clock FTP server client with file system Scratch Pad area for peer to peer communication Configurable link redundancy or segmented networking for l O controller subnetting when using PAC Project Professional The serial connector can be used for a modem connection using PPP This connector can also be used for a direct connection to a serial device communication is handled through PAC Control SNAP PAC R Series Controller User s Guide CHAPTER 3 SYSTEM INFORMATION Connectors and LEDs The following information applies to both SNAP PAC R1 and SNAP PAC R2 controllers Independent 10 100 Mbps Ethernet interfaces RJ 45 connectors RS 232 Port OPTO 22 Ethernet LEDs SNAP PAC R1
3. Enterprise Network J a E F m cree PAC Display PC running PAC Display Professional PC running OptoOPCServer and OptoDataLink Ethernet switch network 1 The controller is also connected to a larger separate enterprise Ethernet network to provide data to PCs running Opto 225 PAC Display HMI software OptoOPCServer and OptoDataLink Sitting between the two networks the SNAP PAC R series controller segments enterprise traffic from the control network SNAP PAC R Series Controller User s Guide CHAPTER 3 SYSTEM INFORMATION Ethernet Link Redundancy The following diagram shows two SNAP PAC R series controllers functioning as I O unit brains connected to two separate Ethernet networks This configuration addresses the concern that an Ethernet network may fail or need maintenance leaving the PC running OptoOPCServer the PC running PAC Display the controller and the I O units unable to communicate The network shown in this diagram requires PAC Control Professional PAC Display Professional and OptoDataL ink p 5 Opto 22 Redundant Network P SS TC Vi two a PC with two NICs running a NICs running PAC Display l PAC Displa z OptoOPCServer and 2 ee desee LE www vwoovvu oyy oo vvv Ethernet switch Ethernet switch network 1 network 2 i SNAP PAC S series controller controls all 1 0 units I O units are all controlled by the controlle
4. 4 Setup Windows dial up networking page 13 on the PC w Configuring PPP on the Controller To configure PPP on the SNAP PAC R series controller see instructions in Opto 22 form 1704 the PAC Manager User s Guide Also use this guide to assign an IP address to the Ethernet ports configure points and store configuration to flash SNAP PAC R Series Controller User s Guide CHAPTER 2 INSTALLATION Attaching the Modem to a SNAP PAC R Series Controller Once the controller and 1 0 points are configured and communication has been tested follow these steps to attach the modem to the controller To work properly with the controller a modem must be able to store settings in non volatile RAM NVRAM and default to those settings on reset IMPORTANT Any modem used with the controller must implement the Carrier Detect CD signal or use a custom cable that connects CD to Data Terminal Ready DTR on the controller side 1 3 Use the following diagram to attach the modem to the controller using the serial connector As shown here you can use either a DB9 or a DB25 connection Modem Controller Modem Controller DB9 DB25 DCD 1 8 DCD TD 2 1 TX RX 2 2 RX RD 3 2 RX TX 3 1 TX RTS 4 4 RTS DTR 4 7 DTR CTS 5 5 CTS RTS 7 4 RTS SG 7 3or6 COM CTS 8 5 CTS CD 8 8 DCD SG 5 3or6 COM DTR 20 7 DTR NOTE Pins 3 and 6 are tied together within the SNAP PAC
5. Modem protocol Use dialing rules O Hardware features C Enable modem error control C Enable modem compression Show icon in notification area w C Show terminal window v Enable modem speaker SNAP PAC R Series Controller User s Guide CHAPTER 2 INSTALLATION Options Tab 1 ABC Properties General ptions Security Networking Advanced Dialing options v Display progress while connecting Prompt for name and password certificate etc Include Windows logon domain Prompt for phone number Redialing options Redial attempts 3 Time between redial attempts 4 minute Idle time before hanging up never Go Validate my identity as follows Allow unsecured password matically use my Windows logon name and password and domain if any Require data encryption disconnect if none Advanced custom settings Settings of security protocol Interactive logon and scripting C Show terminal window C Bun script Browse SNAP PAC R Series Controller User s Guide USING PPP OVER A MODEM Networking Tab t ABC Properties EENEENEMMENMQME RN General Options Security Networking Advanced Type of dial up server am calling PPP Windows 95 98 NT 4 2000 Internet This connection uses the following it F Internet Protocol TCP IP f QoS Packet Scheduler L1 8 Fil
6. A Profibus module provides one channel of data from Profibus DP devices PID Loops Proportional integral derivative PID loops are used to drive a variable often from an analog input toward a desired value The PID monitors the variable compares it to the setpoint the desired value and calculates an output that will push the variable very close to the setpoint Temperature control is a typical application for a PID Each SNAP PAC R series controller can run up to 96 PID loops PID loops run on the I O side independently from an PAC Control strategy To use PID loops configure them in PAC Control or PAC Manager and use PAC Control tuning tools for ease in debugging See Opto 22 form 1700 the PAC Control User s Guide for more information Additional Features For information on configuring additional features available in the SNAP PAC R series controller including security and the use of protocols such as SNMP SMTP and FTP see the PAC Manager User s Guide SNAP PAC R1 and R2 Comparison Chart The following table compares SNAP PAC R1 and SNAP PAC R2 controllers Input latching o e On off status o o Watchdog timer o o High speed counters up to 20 kHz e Digital I O point features Quadrature counters o On pulse and off pulse measurement e TPO time proportional output 1 e Pulse generation N pulses continuous square wave e on pulse and off pulse SNAP PAC R Series Controller
7. INPUT VOLTAGE 7 100 250VAC 47 63 HZ 100 250VAC 47 63 HZ ic ag a FE z 4 5 OUTPUT VOLTAGE OUTPUT VOLTAGE A24VDC 1 25AMPS SVDC SAMPS 24 or 5 VOLS AD beat WHITE BLACK WIRE WHITEIRED 2 WRE 7 SNAP PAC R Series Controller User s Guide INSTALLING THE CONTROLLER AND MODULES Installing the Controller and Modules For instructions on installing the controller see Installation on page 7 For information on modules see the module datasheets available at our website www opto22 com E SNAP PAC R Series Controller User s Guide Index A accessing controller over the Internet 19 analog input modules troubleshooting 54 analog output modules troubleshooting 54 analog point features 36 average filter weight 36 B backup battery 42 battery 42 blink codes 43 C cable crossover 26 straight through 26 damping 36 communicating with controller 17 peer to peer 22 pinging the controller 47 problems with 46 simultaneously 18 via modem 13 communication choosing methods 19 serial 36 with enterprise systems 24 computer connecting directly to controller 26 configuring I 0 points 11 modem communication 12 PPP 12 connecting modem 13 to controller troubleshooting 46 to the enterprise 24 control strategy 21 controller installing 10 Scratch Pad 23 specifications 32 controlling multiple 1 0 units 21 counter high speed 35 qu
8. happening A Failures of only one of the four output channels would indicate a problem with the load being driven by that channel Make sure that the load characteristics including transient characteristics do not exceed the capabilities of the module Also be sure that the module is properly transient protected using either an R C snubber AC or a commutating diode DC across the load Modules may also be protected through the use of transient voltage suppressors across the module itself SNAP Analog Troubleshooting SNAP analog modules require a fairly substantial amount of current due to their on board isolation power inverters Because of this it is important to make certain that the entire SNAP installation is supplied with 5 0 to 5 2 V even while under full load Insufficient power supply could cause symptoms ranging from module drift to random resets and communication problems on the brain The SNAP equipment is designed with a fail safe voltage watchdog feature that inhibits operation when power supply voltage levels get too low thus eliminating the possibility of unintentional output or input Opto 22 offers DIN rail mountable power supplies for use with SNAP I O systems Keep in mind that unless you purchase an isolated module the channels on a SNAP input or output module are not isolated from one another Make certain that any transducers or equipment that these modules are used with are floating isolated from local earth gr
9. Controller liis 13 Configuring Microsoft Windows Dial up Networking on Windows XP sss 13 SNAP PAC R Series Controller User s Guide ing Chapter 3 System Information eeeeeeeeeee eene 17 Communication Options ee a ec ha erben hee d br Lone bo n eI Rua be ER Te bo Ree 17 Simultaneous Communication Goes qais bcn COR Cb Oe tbc COR cte Oba OR bd 18 Accessing SNAP R Series Controllers over the Internet 0 0 cece eee sese 19 Choosing Communication MUNOUE eser dae tego ehe toe Ee Er HR PER eet n 19 SYSTE CM OL ee Glo tiedng teen da a diea e ER ARPRUUR EISE PAAR EROR ect EEE iR ed 20 Understanding the SNAP PAC R series Controller cesses 20 THEN SIGS Orie CONICET 4 ie euo edeste tubo te be Debe e iota tube rh 21 The Control Sideofthe Controller usce taa leche pta es 21 Controlling the System cresie iirreiiiciris oda e a ek oria t QURE E Eme RR bed 21 Using Data for Peer to Peer Communication sssssssssesII 22 Communicating with Enterprise Systems and Third Party Software 0 eecee ee 24 The COMM OL Soy BLERIedaca so tcs aio t PRO hU eter a Spee eae ade RA EROR 25 E UTOR ETE ERE OO TOT TIT 26 Connecting the Controller Directly to a PC or Master Controller 2 0 0 0 ccc cece eee eee 26 Noc NEU ROME TRENT NER INTER Re 26 Attaching the Controller to an Existing Ethernet Network sess 27 Segmenting th Con
10. If you are not using PAC Control but writing your own software applications to access the Scratch Pad areas see the OptoMMP Protocol Guide This guide is written for I O units but much of the same information on programming applies to SNAP PAC controllers The Scratch Pad areas of the memory map are described in the programming guide s appendix SNAP PAC R Series Controller User s Guide SYSTEM ARCHITECTURE Communicating with Enterprise Systems and Third Party Software In addition to its capabilities in I O control and peer to peer communication the SNAP PAC R series I O system can also interface directly with enterprise systems and third party software that need to use its data Thefollowing graphic shows how these software applications and some hardware too can directly access the memory map in the controller s 1 0 side for both I O point data and strategy variable data Email N paging Enterprise management SNAP PAC R series system controller Modbus TCP hardware and software 3rd party g software e ntellution Wonderware All protocols except FTP can read or write to I O points directly through the Memory Map 1 0 Side Read write to points using Memory Map SMTP ActiveX custom Fixed memory area SNMP application FE 1 0 point data 9 Modbus TCP VB C C Scratch pad area ael 1394 based database strategy variable data 3f Enterprise database Any OPC client sof
11. Jeuo 0 1 seues g3 IS Vd dVNS s H s 4 JYd dYNS JVd dVNS dew Aloway hy pi y JO Pale ped UpjeDS i ay WO eyep a qerieA bajens peal osje ued ulais s l4 8JeM3JOS 1U8I 2 940 Auy d L4 1d9 xe s o20101d v 0405 2d se aseqejep Be eseqejeq awes at sesp jonuog avd 7 INH Aeidsig 2vd aseqeyep asliduaquy eseqeyep 49 0 8N do L snqpow evep quiod 0 1 i uoneoijdde dNNS eale Aowau paxi i UJO 5n2 YoAn2 V dlINS i FSHEYIMO 0uo 9Yd ung 9JE J9pUOM e e peog epis jogjuo 0 1 9Vd dVNS 01 uonn aiu e E ABajens peojuwop pue aleMIJOS SWEYIMO 916812 0 esf Kued pig SAN TEE 10 u09 Jud y u6nouu p siulod 0 9 RUM L 10 peal ued d 4 1daoxa sjo2010Jd alemyos pue 8JeMpJeu doL snqpo 2 19 0 9u02 wa sis Sallas Yy Vd dVNS juawabeuew 8sudjaju3 Bured Few SNAP PAC R Series Controller User s Guide NETWORKING Networking From a physical standpoint SNAP PAC R series controllers can be networked in several ways Connected directly to a PC or controller using a crossover cable e Attached to an existing TCP IP Ethernet network e Aspart of an independent network built with standard Ethernet hardware Over a modem connection The networking method you use depends on several things including whether you need control or data acquisition the number of PCs controllers and 1 0 units you are using the speed and volume of com
12. The controller is receving data Orange The controller is transmitting and receiving data Troubleshooting the SNAP PAC R Series Controller If you encounter a problem while installing or using the SNAP PAC R series controller check the information in this section If you need to contact Opto 22 Product Support see For Help on page 5 Getting Device and Firmware Information If you need to contact Opto 22 Product Support for assistance in using an I O unit or controller it is helpful to have device and firmware information at hand before you call us 1 Choose Start Programs gt Opto 22 gt PAC Project PAC Manager 2 Inthe PAC Manager main window click the Inspect button amp l 3 Inthe IP Address field type the IP address of the device Click Status Read SNAP PAC R Series Controller User s Guide TROUBLESHOOTING THE SNAP PAC R SERIES CONTROLLER zi Inspect I O Unit IP Address _y Port 2001 Status Read Status Read Status Write Point Config Digital Bank Digital Point Analog Bank Analog Point High Density System gt ScratchPad gt DataLog gt PID Events gt Communications gt Other gt OxFFFF F030 0004 OxFFFF F030 0008 OxFFFF F030 0018 OxFFFF F030 0000 OxFFFF F030 001C OxFFFF F030 00A0 OxFFFF F030 0050 OxFFFF F030 0020 OxFFFF F030 0080 OxFFFF F030 0024 OxFFFF F030 0025 OxFFFF F030 0026 OxFFFF F030 0028 OxFFFF F030 002E OxFFFF F030 0034 OxFFFF
13. back of each end Comparethe color sequence of the wires in the connectors If the sequence is identical for both connectors its a straight through cable If the sequence is different it s a crossover cable SNAP PAC R Series Controller User s Guide CHAPTER 3 SYSTEM INFORMATION Straight Through Cable Crossover Cable Top View Correct 3 amp 6 on same pair Correct 3 amp 6 on same pair TX 1 oN 1 TX 1 on oN 1 TX 2 Nae a 2 TX 2 MES 2 m ESSE ERR 4 NA 4 ANE L4 bal NT anf M5 5A NT on V5 m RX AOO RX nea a TNn 7 7 7 on po ues Incorrect 3 amp 6 not on same pair Incorrect 3 amp 6 not on same pair Front View TX 1 S 1 TX 1 oN 1 TITT TX 2 See S 2 TX 2 4 NT 2 RX 3 E n d de di 3 RX 3 ony PL 3 4 Swe sw 4 4 ep 4 1 8 5 4 x 5 db d de dU E RX 6 2 ISLANDS B RX 6 DANINZINSG 1 on T a a a ae Bn NASW NS B 8 NS NN g NOTE Make sure you put 3 and 6 on the same pair or you may experience noise and distance limitations Also make sure to include all pairs since they are required for 100 Mbps Attaching the Controller to an Existing Ethernet Network The first rule in attaching SNAP PAC R series controllers to an existing network is to work closely with your system administrator who must determine network topology and hardware Be sure to consider the impact on your existing network of adding the controllers In addition make sure the system admin
14. for the controller and date codes of controllers available through PAC Manager See page 45 P addresses and net masks for devices on the system type of power supply third party devices installed for example barcode readers e Spedific error messages seen SNAP PAC R Series Controller User s Guide FOR HELP ES SNAP PAC R Series Controller User s Guide Installation If you already know how you will use the SNAP PAC R series controller and want to get it running quickly follow the sections in this chapter Tolearn about communication options and networking start on page 17 Specifications are listed on page 32 What You Will Need You ll need the following items to install a SNAP PAC R series controller PC running Microsoft Windows 2000 or higher with a 10 100 MB Ethernet adapter card the TCP IP protocol installed and a valid IP address on the same subnet as the controller For more information see Networking on page 26 e Crossover cable for direct connection to the PC or an available connection to a standard 1OBASE T or 100BASE TX Ethernet network e SNAP PAC R series controller SNAP PAC mounting rack and SNAP I O modules Choose rack and modules based on your needs A SNAP PS5 or SNAP PS5U power supply or other 5 VDC power supply 5 0 to 5 2 VDC at 4 0 A applied to the rack Additional power may be required for SNAP I O modules and depends on the number and type of mod
15. j e 5 1 TX xc AXIS 5 EX Controller reset Status and COM button activity LEDs i 4 RTS 5 CTS 6 COM RS 232 serial 7 DTA communications 8 DCD Status and Activity LEDs RS 232 Serial Cable Wiring ACT Ethernet network activity DB9 LNK Link established with Ethernet net RX 2 1 TX work TX 31 2 RX STAT Startup status and control program operational status SIGNAL 5 3 COM GROUND 232 RS 232 serial activity 6 COM Color Description Green TX Red RX Orange TX RX transmitting and receiving simutaneously PPP PPP status Minimum requirements for wiring an RS 232 serial cable to connect to a PC If you want to connect the controller to a modem see page 13 for all eight pin connections SNAP PAC R Series Controller User s Guide SPECIFICATIONS CONNECTORS AND DIMENSIONS Dimensions The dimensions are the same for the SNAP PAC R1 and SNAP PAC R2 controllers OPTO 22 SNAP PAC SNAP PAC RI L3NH3HL3 o Z LANUSHLA LE esoeooso G T5 44 44mm 4 188 36 375mm 3 69 93 726mm SNAP PAC R Series Controller User s Guide CHAPTER 3 SYSTEM INFORMATION Information on Features SNAP PAC R series controllers offer many features described in the following sections Digital Point Features For information on configuring digital point features see the PA
16. na dotem read o datum tira aNd aC 42 Changing the Controller s IP Address cire dere prt t POE Reb ro arte eA bo REdube eta dus 42 Resetting the Contoller pteyvesensrecsnddetuvorewiecetencertaoesoriacdisertaveeuteat 42 Loading New NR D SISTER TOL 43 Setting Tim and Date Me eT TEE 43 Blink COGS PM 43 STAT UED TTC 43 1431 seciengedstntaiedab ade ia taaacenasadl apdatireerinebtiatareiiadetiseierd 44 7 211 e X I theme reise 45 Troubleshooting the SNAP PAC R Series Controller c isses 45 Getting Device and Firmware Information csssssssssssssssm 45 Communicating with the CONDI sic ibus nete rRERPREE UE EP x PRDRE XE EU e Tues 46 Pinging the Controller CP 47 Accessing the Controller with PAC Manager sssaaa 47 SOIT Network PIODIEMY es sciet udi se rst gab bal e e REE i 49 Additional Troubleshooting Tools 50 Making Sure the Controller is in Normal Mode nnana 50 KR eNOS e E A adeb epa ee ete A 50 Module Troubleshooting Frequently Asked Questions 0 0 ccceee eee e eens 52 SNAP Analog Troubleshooting sss cbes eut ee etna e ee Kuen tat eed 54 Appendix A SNAP Mounting Racks and Power Supplies 55 inesse X 55 SNAP MOUNTAINS eek Go ue rte hone ER EROR Eh KR RO EX ERDE RE BE RO RA ERHERAE ERES MATE 56 SNAP Power SU IES uo ecd e tuted duced dd adt qun d dotted aaa an dard aad Qut data 56 Primary OWED SO
17. on modules see the data sheet and the installation or user s guide for your specific products E ood di Controller AU SONS 1 Jj R Ne Modules In This Appendix SNAP Mounting Racks s 56 SNAP Power Supplies s 56 Installing the Controller and Modules 60 SNAP PAC R Series Controller User s Guide SNAP MOUNTING RACKS SNAP Mounting Racks SNAP mounting racks can hold an 1 0 processor brain or rack mounted controller and up to 4 8 12 or 16 SNAP modules A SNAP PAC rack is shown below with a SNAP PAC R series controller installed but no modules All wiring connections are made to the field connectors on the top of each module 0 1 2 3 4 5 6 7 T en EE TF Mas O68 ee Te EF ng noi Se SNAP Power Supplies Primary Power Supply NOTE For a more general discussion of using power supplies with Opto 22 systems see Opto 22 form 1271 a technical note available on our website at www opto22 com SNAP PAC racks use a 5 VDC power source 5 VDC 0 0 0 1 at minimum 4 0 Amps recommended For systems using AC source voltage the SNAP PS5 or SNAP PS5U power supply is recommended For DC systems such as those using DC backup power the SNAP PS5 24DC offers DC to DC power In general we recommend you use an independent isolated regulated power supply locally with each rack Local isolated supplies offer these advantages Short supply conductors which minimize lo
18. purpose a Side The Scratch Pad area ead write to points defi vk aema Nap however is user defined it is available for you to define Fixed memory area and use as needed in order to I O point data exchange data among peers Control Side Run PAC Control flowcharts The Scratch Pad area includes four sections to accommodate different types of data bits integers floats and strings The bit section is a 64 bit mask Integer and float sections are tables of 10 240 four byte elements Strings are a table of 64 elements each capable of holding 128 characters or 128 bytes of binary data Using PAC Control commands in its flowcharts the first SNAP PAC R series controller can write strategy variable data to its Scratch Pad area Other SNAP PAC controllers can use similar commands in their own flowcharts to read the data from the Scratch Pad area of the first controller Similarly another unit or controller can write to the Scratch Pad area of the first controller which can then read the data deposited in its own Scratch Pad area by the peer The reading and writing of data by peers to the Scratch Pad area must be very carefully coordinated in order to avoid conflicts EN d Shared tag database S For more information on using PAC Control commands for peer to peer communication see Communication Commands in Chapter 10 of the PAC Control User s Guide and individual commands in the PAC Control Command Reference
19. the controller 1 Place the rack so that the module connector numbers are right side up with zero on the left Controller Module connector position zero rer 3 Retention bar Module connectors 2 Position the module over the module connector aligning the small slot at the base of the module with the retention bar on the rack 3 With the module correctly aligned over the connector push on the module to snap it into place When positioning modules next to each other be sure to align the male and female module keys shown in the detailed view in the illustration at right before snapping a module into position Modules snap securely into place and require a special tool provided to remove them To remove a module see page 9 EJ SNAP PAC R Series Controller User s Guide 4 Removing a Module 1 CHAPTER 2 INSTALLATION Optional As shown in the photo at right use standard 4 40 x 1 4 truss head Phillips hold down screws to secure both sides of each module CAUTION Do not over tighten screws Plug the wiring connector into each module to attach modules to the devices they monitor See the wiring diagrams in the module s data sheet If the modules are held in place with screws remove them Holding the SNAP module tool provided as shown in the illustration at right insert it into the notch at the base of the module Squeeze the module tool against the module to open th
20. timeout sets how long in milliseconds the device allows a session to remain open without any activity After this time the device checks the session to make sure it is still good and closes it if it is not The default is 240 000 milliseconds or four minutes SNAP PAC R Series Controller User s Guide TROUBLESHOOTING THE SNAP PAC R SERIES CONTROLLER 5 Clickthe Apply button to write your changes to the controller 6 In the Operation Commands list highlight Store configuration to flash Click Send Command 7 Inthe Operation Commands list highlight Restart brain from powerup Click Send Command The new TCP parameters are set Module Troubleshooting Frequently Asked Questions Q have a SNAP digital module that has ceased to function What may have caused this A Loss of function in a SNAP digital module is normally caused by misapplication As with Opto 22 s other digital I O module families there is no one way in which SNAP I O modules fail Output modules normally fail in a different way than inputs Output modules usually fail open or half wave for AC and the failure is normally caused by the application of too much current or by degradation of the semiconductor switch by overvoltage Because the module is separated into two parts by the optical isolator it is possible to have an output module that behaves properly on the logic side but is broken on the field side The LED will in most cases continue to turn on and off
21. you can ping the controller try to access it using PAC Manager You will need to know the controller s IP address 1 If PAC Manager is not already open choose Start gt Programs gt Opto 22 PAC Project PAC Manager The PAC Manager main window opens SNAP PAC R Series Controller User s Guide TROUBLESHOOTING THE SNAP PAC R SERIES CONTROLLER 3 PAC Manager File Tools View Help alssja x e e aj mj ej 2 Inthe PAC Manager main window click the Inspect button Bl 3 Inthe IP Address field type the IP address of the controller or choose it from the drop down list Click Status Read Information from the controller is displayed in the window 5 Inspect 1 0 Unit IP Address EERTSE v Port 2001 Timeout 1000 ms Status Status Read area last read at 03 06 07 12 31 20 r Status Read Status Read Status Write OxFFFF F030 0004 Point Config OxFFFF F030 0008 Dita ES OxFFFF F030 0018 Digital Point OxFFFF F030 0000 OxFFFF F030 001C Analog Bank OxFFFF F030 00A0 OxFFFF F030 OOBO Analog Point High Density OxFFFF F030 0020 OxFFFF F030 0080 ERST gt OxFFFF F030 0024 OxFFFF F030 0025 Scratch Pad OxFFFF F030 0026 OxFFFF F030 0028 Data Log OxFFFF F030 002E PID P pxrrrr F030 0034 Events Communications OxFFFF F030 0040 OxFFFF FFFF F060 Other OxFFFF FFFF F050 OxFFFF FFFF F058 Powerup Clear Flag PUC Needed Busy Flag Loader Version Memory Map Ver
22. 0E analog serial etc PID Loops Available 32 Arcnet Reconfigs Detected 2 Arcnet Reconfigs Initiated by I 0 Unit 0 Arcnet Transmit Attempts Since Powerup 189029755 Arcnet ACKs 189029742 Arcnet Timeouts Arcnet Other node not found etc 13 Arcnet Timeout Value msec 1l Arcnet Receive Interrupts 189029739 Ethernet MAC Resets Since Powerup 0 Dig Output Point Resets Since Powerup 0 Dig Interrupt Failures Since Powerup 0 Module 0 Times Discovered 0 All three of these items should have a value of zero If any of these items has a value other than zero you may have a network problem SNAP PAC R Series Controller User s Guide EJ TROUBLESHOOTING THE SNAP PAC R SERIES CONTROLLER Analyze Communication Packets f it appears that you have network problems you can use the OptoEnetSniff utility to log and analyze network communication packets The utility is included with PAC Project Basic and PAC Project Professional software suites and is available on our website www opto22 com For help using the utility see its online help file choose Help Contents Have Your Network Certified f you suspect network problems you may need to have your network professionally certified Opto 22 does not offer network validation or certification services but many network hardware manufacturers do Contact the manufacturer of your Ethernet network hardware to have them diagnose fix and certify your network If you continue to have p
23. 594 and the SNAP PAC S series data sheet form 1584 Or you might consider using a router network switch or other gateway device Using the Controller in an Independent Network The third way SNAP PAC R series controllers can be used is by developing an independent network An independent network gives a high level of communication speed and volume as well as high security If you have no existing Ethernet network you can use off the shelf Ethernet components to build one Consider using industrial grade Ethernet components for harsh and challenging environments You may also need a separate network for critical control applications Again the choice depends on your requirements for data transactions data security and whether a near deterministic system is necessary If you are building your own network remember that each controller must have a fixed IP address See the PAC Manager Users Guide for more information on IP addresses Since Ethernet and TCP IP are worldwide standards there are a number of commercially available resources for learning about building and maintaining such a network One excellent resource is the MCSE Training Guide TCP IP by New Riders Publishing many others are also available We strongly suggest you learn as much as possible about the subject and plan your network carefully before beginning in order to get the best performance from your system Communicating with the System via a Modem A fourth way to
24. AP PAC R Series Controller User s Guide SYSTEM ARCHITECTURE SNAP PAC R series 1 0 Unit 1 0 Side Read write to points using Memory Map Control Side Run PAC Control flowcharts PAC Control Use to create flowcharts and download strategy to SNAP PAC R series Memory database PAC Display Uses the same tag database as PAC Control Other Ethernet based 1 0 units Using Data for Peer to Peer Communication What if you have multiple SNAP PAC controllers What if each one is running a different PAC Control strategy and they need to share variable data Scratch Pad areas within the SNAP PAC R series controller s memory map provide a way for other devices on the Ethernet network to access data in the controller For descriptions of the Scratch Pad areas bits integers floats and strings see the PAC Manager User Guide For help in using PAC Control commands to access Scratch Pad areas see I O Unit Scratch Pad Commands in Chapter 10 of the PAC Control User s Guide The following illustration shows how this type of peer to peer communication can be done SNAP PAC R Series Controller User s Guide CHAPTER 3 SYSTEM INFORMATION The memory map in the controller s I O side has two SNAP PAC R series 6 1 0 Unit 8 parts the fixed area and the WIEK Scratch Pad area The fixed memory area is used automatically by the controller to read and write data to 1 0 points each address has a fixed
25. C All other 4 channel digital input and output modules not high density digital modules 9 050 SNAP AICTD analog input module SNAP AICTD 4 analog input module High density digital input and output modules SNAP AIMA 32 and SNAP AIV 32 analog input mod ules All analog output modules except SNAP AOA iSRC 0 150 SNAP AIARMS analog input module SNAP AIVRMS analog input module SNAP AIMA and AIMA 4 analog input modules SNAP AITM and AITM 2 analog input modules SNAP AIMV 4 and AIMV2 4 analog input modules SNAP AIV and AIV 4 analog input modules 0 170 SNAP AIRTD analog input module SNAP AIR40K 4 analog input module 0 190 SNAP AIRATE analog input module SNAP AIPM power monitoring module 0 100 SNAP AILC and AILC 2 load cell modules 0 120 Serial communication and Profibus modules 0 250 Motion control module not powering a breakout board Motion control module powering a breakout board 0 700 Total Current from 5 volt supply IMPORTANT For a SNAP PS5 or a SNAP PS5 24DC power supply the total power required must not exceed 4 Amps For a SNAP PS5U the total power required must not exceed 5 Amps Wiring the Primary Power Supply Use one power supply per I O unit Use 14 AWG wire SNAP PAC R Series Controller User s Guide SNAP POWER SUPPLIES 1 Mount the SNAP PS5 or SNAP PS5 24DC power supply so that the attached red and black power wires will reach the 4 and power termina
26. C Manager User s Guide Latches When the value of a digital input point changes from off to on an on latch is automatically set While the value of the point may return to off the on latch remains set until deared as a record of the change Similarly an off latch is set when the value of a digital point changes from on to off and it remains set until cleared Latching is automatic and needs no configuration Watchdogs You can set a watchdog to monitor communication with the PC or other host device If the host does not write data to the controller for the length of time set in the watchdog the controller automatically sets designated digital and analog I O points but not points on high density digital modules to the values you have determined This action makes sure the process is brought to a safe state if communication fails High speed counters R1 only Any standard or high density digital input can be used as a counter counting the number of times the input changes from off to on High density digital points always act as counters without needing configuration Standard digital points must be configured as counters as soon as it is configured the counter is automatically activated Quadrature counters R1 only When you configure points on a quadrature input module the quadrature counter feature is automatically included You can read the quadrature count from either point by reading the point s counter data Additional d
27. F030 0038 OxFFFF F030 003C OxFFFF F030 0040 OxFFFF FFFF F060 OxFFFF FFFF F050 OxFFFF FFFF F058 Close Help Timeout 1000 ms DESCRIPTION Powerup Clear Flag PUC Needed Busy Flag Loader Version Memory Map Version Firmware Version Firmware Version Date Firmware Version Time Unit Type Unit Description I 0 Unit Hardware Revision Month I 0 Unit Hardware Revision Day I 0 Unit Hardware Revision Year Installed Ram MAC Address TCP IP Address TCP IP Subnet Mask TCP IP Default Gateway TCP IP Name Server Secondary MAC Address Secondary TCP IP Address Secondary TCP IP Subnet Mask Status Status Read area last read at 03 06 07 12 31 20 3 PUC Received 0 Rl la l R8 0a 03 25 2007 13 55 41 0x00000078 SNAP PAC R2 H 25 2007 16777216 00 A0 3D 00 Cl 48 10 192 54 115 255 255 192 0 D 00 C1 49 Keep this window open on your screen when you call Product Support Communicating with the Controller If you attempt to connect to the controller using its IP address and you cannot first check the following Make sure the controller has been turned on and the LNK and STAT LEDs for the connected Ethernet interfaces are lit see Connectors and LEDs on page 33 Make sure the controller is mounted on a SNAP PAC rack Make sure the controller s hold down screw has been tightened so that it is firmly attached to the rack Verify that you typed in the correct address for the controller Che
28. IEEE 1394 based protocol PAC Control A enterprise management system protocol see OptoMMP Protocol Guide Give technicians an Opto 22 HMI with alarming and trending PAC Display See PAC Display User s Guide Monitor and control SNAP PAC PAC Control with a SNAP PAC R series or SNAP PAC R series controllers on the net PAC Control S series controller see PAC Control User s Guide amp work Command Reference PAC Control does not write directly to peers but places Share strategy variable data with PAC Control data in the memory map so peers can retrieve it by read Opto 22 controllers and other SNAP PAC R series controllers peer to peer communication writes to memory map Scratch Pad areas Memory map Scratch Pad areas ing memory map addresses See PAC Control User s Guide amp Command Reference Also see controllers memory map in OptoMMP Protocol Guide Communicate with Mod bus TCP hardware or software Modbus TCP See the Modbus TCP Protocol Guide form 1678 Exchange l O point data with third party software such as HMIs OptoOPCServer and controller s memory map Purchase OptoOPCServer separately See OptoOPC Server User s Guide and the memory map in OptoMMP Protocol Guide Exchange PAC Control strategy variable data with third party software such as HMls FTP and control ler s file system OptoOPCServer Purchase OptoOPCServer separately See PAC Control User
29. R series controller so no external jumper is required Store configuration settings to the modem s NVRAM following instructions in the user s guide for your modem NOTE Configuration settings must be stored to the modem NVRAM so they will be loaded when the SNAP PAC R series controller sends a reset command to the modem If PCs will dial up the controller set up Windows dial up networking on the PCs that will call the controller Configuring Microsoft Windows Dial up Networking on Windows XP Use the following settings to configure Windows dial up networking on any PC that will dial in to the controller 1 2 3 4 Click Start Control Panel Double click Network Connections Under Network Tasks click Create a new connection to display the New Connection Wizard Follow the directions in the wizard to create a new dial up connection SNAP PAC R Series Controller User s Guide USING PPP OVER A MODEM 5 When the new connection is created right click its name in the Network Connections window and select Properties 6 In the Properties dialog box set each tab as shown in the following figures General Tab t ABC Properties General Options Security Networking Advanced Connect using E Modem Standard 56000 bps Modem COM1 Phone number Modem Configuration B Standard 56000 bps Modem Ct Maximum speed bps 19200 Phone number 1 800 695 58
30. SNAP PAC R SERIES CONTROLLER USER S GUIDE SNAP PAC R1 SNAP PAC R2 Form 1595 070724 July 2007 OPTO 22 43044 Business Park Drive Temecula CA 92590 3614 Phone 800 321 OPTO 6786 or 951 695 3000 Fax 800 832 OPTO 6786 or 951 695 2712 www opto22 com Product Support Services 800 TEK OPTO 835 6786 or 951 695 3080 Fax 951 695 3017 Email support opto22 com Web support opto22 com SNAP PAC R Series Controller User s Guide Form 1595 070724 July 2007 Copyright O 2007 Opto 22 All rights reserved Printed in the United States of America The information in this manual has been checked carefully and is believed to be accurate however Opto 22 assumes no responsibility for possible inaccuracies or omissions Specifications are subject to change without notice Opto 22 warrants all of its products to be free from defects in material or workmanship for 30 months from the manufacturing date code This warranty is limited to the original cost of the unit only and does not cover installation labor or any other contingent costs Opto 22 1 0 modules and solid state relays with date codes of 1 96 or later are guaranteed for life This lifetime warranty excludes reed relay SNAP serial communication modules SNAP PID modules and modules that contain mechanical contacts or switches Opto 22 does not warrant any product components or parts not manufactured by Opto 22 for these items the warranty from the original manufacturer a
31. User s Guide SNAP PAC R1 AND R2 COMPARISON CHART Thermocouple linearization 32 bit floating point for o o linearized values Minimum maximum values Offset and gain Scaling Analog I O point features Time proportional output Output clamping Filter weight Watchdog timer Ramping High density digital modules inputs and outputs Serial communication modules Serial events PID logic on the brain 96 PIDs 96 PIDs Digital events Alarm events Timers Event messages UDP Streaming Email SMTP client OPC driver Data logging in the brain Security IP filtering port access Realtime clock RTC I O point data mirroring Memory map copying Scratch Pad area tits floats integers strings SNMP network management of I O amp variables PPP dial up and radio modems FTP server and client Modbus TCP OptoMMP memory mapped protocol Ethernet network Serial RS 232 SNAP PAC R Series Controller User s Guide CHAPTER 3 SYSTEM INFORMATION Runs PAC Project strategies PAC Project compatibility using SNAP PAC controller or brain e SNAP PAC SNAP PAC Mounting rack racks racks Number of modules per mounting rack 4 8 12 or 16 4 8 12 or 16 16 digital 16 digital Module types and maximum numbers allowed 16 analog 16 analog pe
32. Y vc 56 Determining Power Requirements ceca rote Ete est i e hr eed bte Pi tt 57 Ke seis PP ear tte TP RID MP CMT 58 Installing the Controller ang MagHles cuadra EYE Era REDE EE ada bead adici 60 INGEN D Se teed 61 SNAP PAC R Series Controller User s Guide SNAP PAC R Series Controller User s Guide Overview Introduction The affordable and compact SNAP PAC R series programmable automation controllers provide powerful real time control and communication to meet your industrial control monitoring and data acquisition needs As part of an Opto 22 input output I O system one of these on the rack industrially hardened units can handle multiple tasks involving digital and analog control serial string handling communication and enterprise E connectivity SNAP PAC R1 f Used with the included PAC Project Basic controller E software suite or PAC Project Professional purchased separately the Ethernet based SNAP PAC R series controller runs control programs written in Opto 22 s PAC Control software to monitor and control a wide range of devices and equipment at the I O level or as a slave to a SNAP PAC S series controller SNAP PAC R series controllers are well suited to original equipment manufacturers OEMs system integrators and end users in process control discrete manufacturing or hybrid industries and applications Two models of the SNAP PAC R series controller are a
33. adrature 35 crossover cable 26 current loop power supply wiring 58 D data delivering to databases 24 dial up networking configuring 12 on Windows 2000 13 digital point features 35 direct connection 26 E email 24 enterprise connectivity 24 enterprise management system 24 SNAP PAC R Series Controller User s Guide Ll error codes blink codes 43 Ethernet network accessing controller over the Internet 19 certification 50 connecting controller to 27 errors 49 independent control network 28 troubleshooting 49 Ethernet port 33 F failsafe bootloader mode 42 50 features description of 35 filter weight 36 firmware loading 43 flowcharts 21 G gain 36 H hardware getting data about 45 installing 8 help blink codes 43 LED descriptions 33 network problems 49 Product Support 5 high speed counters 35 I O modules installing 8 removing 9 0 point features 35 installing controller quick start 7 controller on rack 10 I O modules 8 SNAP PAC R Series Controller User s Guide modem 13 mounting rack 8 power supplies 56 Internet accessing controller over 19 ioControl 21 ioDisplay 21 L latches 35 LEDs blink codes 43 description 33 red 46 loop power supply 58 M maximum value 36 memory map 21 23 minimum value 36 Modbus TCP 24 modem 12 connecting to controller 13 using PPP 12 mounting rack installing 8 N ne
34. and Reset to defaults and Restart 1 0 Unit Store configuration to flash Erase configuration from flash Restart 1 0 Unit from powerup Switch to loader mode Clear digital event configuration Clear alarm configuration Clear PPP configuration Clear e mail configuration Clear timer configuration No Apply Degrees C 0 250 3000 5 240000 1000 1000 Ox 00000000 10 192 255 5 255 255 192 0 Clear PID configuration Clear datalog Close Help CAUTION Note the following recommended settings TCP Minimum Retransmission Timeout msec 250 TCP Initial Retransmission Timeout msec 3000 TCP Retransmission Attempts s TCP Idle Session Timeout msec 240 000 If you set these fields too low you may not be able to communicate with the device at all even through PAC Manager to fix the settings Then you would have to reset the controller to factory defaults see page 42 Change these four fields as necessary Minimum RTO sets an absolute minimum value for the RTO The device calculated RTO will never go below this value Initial RTO sets the RTO for the first communication try Be careful since all future tries are based on this value if you set it too low for network conditions a connection will never be made TCP Retransmits sets the number of times the device retries communication Larger busier networks need a higher number of retransmits than smaller networks with less traffic TCP idle session
35. ands within the flowchart read from and write to the memory map in the I O side of the controller in order to monitor and control the I O points Controlling the System The flowcharts that run in the control side of the controller are created in PAC Control a software application included with the SNAP PAC R series controller You create these flowcharts as part of a control strategy and download the strategy to the controller and the controller runs it independently For information on using PAC Control see form 1700 the PAC Control User Guide and form 1701 the PAC Control Command Reference You use PAC Control on a PC connected to the network so you can create your control strategy and download it to the controller Also included with the SNAP PAC R series controller is PAC Display a full featured human machine interface HMI PAC Display uses the same tag database as PAC Control so points and variables are already defined Operators technicians and engineers running PAC Display on a Microsoft Windows based PC on the Ethernet network can see the information they need as well as plot trends and respond to alarms For applications that require more than one I O unit the SNAP PAC R series controller can control multiple I O units through the flowcharts on its control side These I O units can be located where needed on the Ethernet network for distributed control The following diagram shows the control side of the controller SN
36. as commanded by the driving logic device even though the module has failed The first step to troubleshooting a failed module is to check the fuse If it is blown simply replacing it should get the module working again If the module continues to blow fuses analyze the load to see if the module is really suitable to the application When input modules fail they usually do so on the field side typically from overvoltage or overcurrent resulting from overvoltage Opto 225 SNAP AC and DC input modules contain a full wave rectifier as opposed to the G1 and G4 modules which contain a bridge rectifier allowing hookup without regard to polarity Unlike output modules an input module s LED normally will not function as expected when the module has failed Failures on the field side of all types of Opto 22 digital I O modules occur extremely rarely and are typically the result of misapplication The logic side failures of Opto 22 s I O modules are also extremely rare Usually a failure of the logic side is attributable to using the module at the wrong logic voltage or to miswiring Q I have an input module that seems to flicker when a voltage is applied to it What is happening here A Opto 22 s basic input modules contain full wave rectifiers In an AC application it is possible to destroy one half of the rectifier and still have the module function after a fashion The full wave rectifier turns into a half wave rectifier causing the
37. asic Control Network The following diagram shows a SNAP PAC R series controller that uses one network interface to communicate with host computers and control I O The controller controls 1 0 on its own rack and on other SNAP PAC I O units Basic Control Network PAC Display PC running PAC Display Basic Ethernet switch I I l l l l l l l l l l l l Additional I O units are j controlled by the R series I controller on the network l l l l l l l l l l l I l l Ea eem M a BASAU Field devices location 2 Field devices location 1 SNAP PAC R Series Controller User s Guide NETWORKING Network Segmenting Ethernet Connections to Host and I O Units The following diagram shows two Opto 22 1 0 units connected together over an Ethernet network and controlled by a SNAP PAC R series controller running an PAC Control strategy The network shown in this diagram requires PAC Control Professional and PAC Display Professional and OptoDataLink I a TS d Control Network Ethernet switch Additional I O units are controlled 1 by the R series controller on an isolated network Field devices location 2 Field devices location 1 SNAP PAC R series controller communicates with host computers through one network interface and controls 1 0 both directly on the rack and through the other Ethernet interface
38. assign an IP address to the controller This guide is in Adobe Acrobat PDF format on the CD that came with the controller and is also available from our website www opto22 com What s Next To start configuring controllers and 1 0 points see Configuring 1 0 below To learn more about SNAP PAC R series controller capabilities and network options see Chapter 3 System Information To create PAC Control strategies to run on the controller see the PAC Control Users Guide and the PAC Control Command Reference Both are available in PDF format on the CD that came with the controller and on our website www opto22 com To work with the following items on the controller see instructions in the PAC Manager User s Guide e File system and FTP KJ SNAP PAC R Series Controller User s Guide CHAPTER 2 INSTALLATION Security settings e Port and interface configuration To use OLE for process control OPC with SNAP PAC R series controllers purchase OptoOPCServer and see Opto 22 form 1439 the OptoOPCServer User s Guide To communicate with controllers using Modbus TCP see the Modbus TCP Protocol Guide form 1678 To program your own applications see Opto 22 form 1465 the OptoMMP Protocol Guide Configuring I O No matter how you communicate with SNAP PAC R series controllers you will need to configure I O points and controller features If you are not using PAC Control Opto 22 s flowchart based control software f
39. ck the label on the side of the controller where the IP address should be written There are two labels one for each Ethernet port so make sure to look at the right one Make sure the controller has been assigned a valid IP address and subnet mask SNAP PAC R series controllers come from the factory with a default IP address of 0 0 0 0 which is invalid The default subnet mask is 255 255 255 0 To assign an IP address and subnet mask see the PAC Manager User s Guide Make sure that no red LEDs on the controller are lit A red LED could indicate a voltage supply problem Each controller should have its own power supply The controller needs a minimum of 5 0 VDC measured at the rack Make sure you have up to date drivers installed on your computer s Network Interface Card NIC Contact your system administrator or the manufacturer of the card for help 46 SNAP PAC R Series Controller User s Guide CHAPTER 4 MAINTENANCE AND TROUBLESHOOTING e Makesure you have Administrator privileges on your computer and that any firewall in the computer such as the built in firewall in Windows XP is temporarily disabled before you try to assign or change IP addresses load firmware using PAC Manager s Maintenance window or work with files on the controller BootP and FTP cannot function through a firewall in the PC Firewalls in a router are less likely to be a problem unless certain ports such as FTP client have been blocked either by defaul
40. ction with Modbus TCP hardware or software or third party software applications which can read or write to I O points on SNAP PAC R series controllers e OPC OLE for Process Control uses OptoOPCServer to serve controller data to any OPC 2 0 compliant application such as an HMI which can also read or write to I O points OptoOPCServer can be purchased separately or as part of the PAC Project Professional software suite SMTP Simple Mail Transfer Protocol connects a SNAP PAC R series controller with corporate email servers so employees can be emailed or paged if there s a problem on devices attached to the controller SNMP Simple Network Management Protocol makes it possible to monitor devices attached to SNAP PAC R series controllers just as you would any computer or server on the Fthernet network using an SNMP based enterprise management system such as Computer Associates Unicenter Hewlett Packard s OpenView or IBM s Tivoli When a monitored event occurs such as a door left open or a pressure level too high the controller sends an SNMP trap to the management system e FTP File Transfer Protocol can be used to transfer files and data to and from the SNAP PAC R series controller whether to custom applications enterprise databases or any file system Simultaneous Communication In addition to communicating using all the methods listed above each SNAP PAC R series controller can also communicate simultaneou
41. damp of 5 VDC for that point The values for upper and lower clamp are set in engineering units Average filter weight The controller can use a filter weight to smooth analog input signals that are erratic or change suddenly See details in the PAC Manager User s Guide Ramping R1 only Some devices attached to analog outputs should not be abruptly stepped up or down because a sudden change might damage the equipment or cause other problems Instead you can gradually ramp the device up or down to the desired value IMPORTANT Ramping is available only when used with PAC Control Professional Ramping is not currently available through PAC Manager or the memory map Use PAC Control commands to ramp an analog output See the PAC Control User s Guide for more information Serial Communication The SNAP PAC R series controller can communicate with serial devices either through the RS 232 connector on top of the controller or though SNAP serial communication modules on the rack Communication through the RS 232 port is handled through PAC Control commands See Communication Commands in Chapter 10 of the PAC Control Users Guide For additional serial connections use SNAP serial communication modules Most serial modules provide two channels of serial data typically to interface with printers scales chart recorders RFID SNAP PAC R Series Controller User s Guide CHAPTER 3 SYSTEM INFORMATION readers or Wiegand security devices
42. e controller automatically sets designated I O points to the values you have determined This action makes sure the process is brought to a safe state if communication fails Scaling You can scale analog input or output points so that the values make sense for your situation For example you can scale a 5 V to 5 V input point to show 0 to 100 Minimum and maximum values The controller automatically keeps track of minimum and maximum values You can read these values at any time for example to record minimum and maximum temperatures You can also reset min max values For example if you want to record the maximum temperature at point 2 in each 24 hour period you must reset the values after they are read each day Offset and gain The controller can calculate offset and gain for analog input points If a 50 mV to 50 mV input receives signals that are slightly off not exactly 50 mV at the lowest point for example the offset and gain can be calculated so that values will appear accurately when read NOTE If you are using Modbus TCP you will need to calculate the offset and gain yourself Then you can write offset and gain values to the controller Output clamping The controller can clamp values sent to analog output points so they do not go above or below a specific limit For example if you are using a 0 10 VDC output module but the device attached to one of its points can only handle a maximum of 5 VDC you can set an upper
43. e hot side of the supply Because the module is totally isolated from field to logic the field or contact side ofthe module must power itself from the attached line By nature of the pilot circuit in the module the switching semiconductor is in an indeterminate state when there is no voltage across the module It may turn on for up to a half cycle if it is suddenly wet The pilot circuit will realize that the module is on but it cannot turn it off until the voltage crosses zero again There is no easy solution to this problem Typically a solution will involve either maintaining a minimal voltage across the module pre wetting it with a low voltage or absorbing the energy from the half cycle turn on with an R C network in parallel with the load SNAP PAC R Series Controller User s Guide TROUBLESHOOTING THE SNAP PAC R SERIES CONTROLLER Q Why are all four loads connected to my SNAP output module coming on when I m activating only one of the channels A The SNAP digital output is likely connected on the wrong side of the loads Remember that all four channels share one fuse thus one side of each output is common with one side of all the others If the module is on the wrong side of the load any one channel is effectively connected to all four If the output is a SNK type try switching to a SRC type In AC applications reverse the module wiring Q I keep having failures on one channel of my SNAP output module Why might this be
44. e and Printer Sharing for Client for Microsoft Networks C Negotiate multi link for single link connections Description Allows your computer to access resources on a Microsoft network Advanced Tab gt ABC Properties General Options Security Networking Advanced Windows Firewall Help protect my computer and network by limiting or preventing access to this computer from the Internet Internet Connection Sharing C Allow other network users to connect through this computer s Internet connection Establish a dial up connection whe ra computer on my network attempts to a s the Internet llow other network users to control or disable the shared Internet connection Learn more about Internet Connection Sharing Settings EJ SNAP PAC R Series Controller User s Guide System Information This chapter explains how to use SNAP PAC R series controllers in an Ethernet network and how to communicate with them It also provides information on system architecture specifications and features In This Chapter Communication Options ss T System ACE CIOS uae 20 AEE e eA NUS EE 26 Specifications Connectors and Dimensions 32 Information on Features Lusso 35 SNAP PAC R1 and R2 Comparison Chart ar Communication Options SNAP PAC R series controllers communicate using TCP IP or UDP IP over a wired or
45. e release latch and pull straight up on the module to remove it Continue with Installing the Controller on page 10 SNAP PAC R Series Controller User s Guide EA WHAT S NEXT Installing the Controller CAUTION Make sure you are using an SNAP PAC rack for your SNAP PAC R series controller Using the wrong rack will severely damage the controller 1 Remove the controller from its packaging 2 Turn off power to the rack assembly 3 Align the controller connector with the mating connector on the mounting rack as shown in the diagram at right 4 Seatthe controller onto the connector and use the hold down screw to secure the controller in position Do not overtighten 5 Using Category 5 or superior solid unshielded twisted pair cable connect the controller in one of the following ways Recommended for initial configuration Connect to a PC directly using an Fthernet crossover cable Connect to a standard 1OBASE T or 100BASE TX Ethernet network that has a PC on the same subnet as the controller and does NOT have a Dynamic Host Configuration Protocol DHCP server Maximum cable or segment length is 100 meters minimum cable length is one meter For more information on cables see page 26 6 Forcontrollers used with a modem Follow the steps in Using PPP Over a Modem on page 12 7 Before turning on power to the rack follow instructions in Opto 22 form 1704 the PAC Manager User s Guide to
46. erator interfaces or projects for communicating with a SNAP PAC controller PAC Display offers a full featured HMI including alarming trending and a built in library of 3 000 industrial automation graphics PAC Display Professional adds the ability to import projects created in OptoDisplay part of the legacy Opto 22 FactoryFloor software suite and using redundant Ethernet communication links on SNAP PAC controllers PAC Display Professional can also connect to Ethernet based FactoryFloor controllers running OptoControl strategies OptoOPCServer is a fast efficient OPC 2 0 compliant server for communicating with many Opto 22 products including SNAP PAC controllers and other SNAP controllers running PAC Control strategies SNAP Ethernet based I O units that use SNAP brains like the SNAP B3000 ENET or SNAP ENET M64 and Ethernet based FactoryFloor controllers running OptoControl strategies Using OptoOPCServer you can consolidate data from all these Opto 22 systems into the OPC client software of your choice such as third party HMI and data acquisition packages and custom software applications you create with tools such as Visual C PAC Manager is a utility application for assigning IP addresses to SNAP PAC controllers reading or changing basic controller configuration and more PAC Manager is also used to configure additional Ethernet I O units that communicate with the controller OptoDataLink is a software application that mak
47. ers this guide assumes that you are already familiar with Modbus TCP See the Modbus TCP Protocol Guide form 11678 The following sections are included in this user s guide Chapter 1 Overview information about the guide and how to reach Opto 22 Product Support Chapter 2 Installation dquick start steps to get SNAP PAC R series controllers up and running quickly Chapter 3 System Information conceptual information on networking and communicating with SNAP PAC R series controllers descriptions of features capabilities and specifications for SNAP PAC R series controllers Chapter 4 Maintenance and Troubleshooting assigning and changing IP addresses resetting the controller to factory defaults upgrading firmware and tips for resolving difficulties you may encounter while working with SNAP PAC R series controllers Appendix A SNAP Mounting Racks and Power Supplies wiring diagram examples for assembling your SNAP PAC R series controller SNAP PAC rack and power supply Related Documentation See the following documents for additional information Configuring I O points and system functions PAC Manager User s Guide 1704 PAC Control User s Guide 1700 Designing flowchart based control programs for the PAC Control Command Reference 1701 pem PAC Control Commands Quick Reference Card 1703 ES SNAP PAC R Series Controller User s Guide CHAPTER 1 OVERVIEW Communicating with I O un
48. es Controller User s Guide CHAPTER 1 OVERVIEW e PAC Project Basic includes PAC Control for developing control programs PAC Display for creating operator interfaces and PAC Manager configuration software e PAC Project Professional adds expanded versions of PAC ControlPAC Control and PAC Display plus OptoOPCServer software for exchanging data with OPC 2 0 compliant client software applications and OptoDataLink for exchanging SNAP PAC System data with databases including Microsoft SQL Server Microsoft Access and MySQL text files and email systems PAC Control Basic is a graphical flowchart based programming tool for machine control and process applications Using PAC Control you create download and run strategies on a SNAP PAC controller In addition to flowchart programming with subroutine capability PAC Control includes a powerful built in scripting language based on C and other procedural languages PAC Control Professional adds the ability to import legacy OptoControl strategies support for older mistic serial O units and support for the dual independent Ethernet ports on a SNAP PAC controller A SNAP R series controller simultaneously runs up to 16 PAC Control flowcharts although the PAC Control strategy can actually contain a much larger number of flowcharts The total number of flowcharts is limited only by the memory available for strategy storage PAC Display Basic is an intuitive HMI package for building op
49. es it easy to share data from SNAP PAC systems with commonly used databases including Microsoft SQL Server Microsoft Access and MySQL as well as text files The I O points and strategy variables already created in your PAC Control strategy are automatically available for OptoDataLink to use for data exchange Software Availability PAC Project Basic is included with SNAP PAC controllers and is a free download from the Opto 22 website PAC Project Professional is available for purchase on a CD with both Acrobat PDF format and printed documentation SNAP PAC R Series Controller User s Guide ABOUT THIS GUIDE To get PAC Project Professional immediately you can buy and download the software from the Opto 22 website at www opto22 com the CD and printed documentation will be shipped to you You can also separately purchase PAC Control Professional PAC Display Professional OptoOPCServer and OptoDataLink as needed For additional information see the PAC Project data sheet Opto 22 form 1699 About this Guide This guide shows you how to install and use SNAP PAC R series controllers This guide assumes that you have some familiarity with TCP IP and Ethernet networking If you are not familiar with these subjects we strongly suggest you consult commercially available resources to learn about them before attempting to install or use SNAP PAC R series controllers If you are using Modbus TCP for communicating with SNAP PAC R series controll
50. et errors reported by the controller These errors indicate network problems You will need to know the controller s IP address 1 2 3 4 Ethernet Errors Choose Start gt Programs gt Opto 22 gt PAC Project gt PAC Manager In the PAC Manager main window click the Inspect icon Ql In the IP Address field type the IP address of the controller Click Status Read Scroll down until you see the items Ethernet Errors Late Collisions Ethernet Errors Excessive Collisions and Ethernet Errors Others Inspect 1 0 Unit IP Address fi 0 192 55 67 x Port 2001 Status Read Status Write Point Config Digital Bank Digital Point Analog Bank Analog Point High Density System Scratch Pad gt DataLog gt PID Events L Communications gt Other OxFFFF F030 0068 OxFFFF F030 006C OxFFFF F030 0108 OxFFFF F030 0070 OxFFFF F030 0074 OxFFFF F030 0078 Timeout 1000 ms Status Status Read area last read at 10 11 06 12 29 17 TCP Retransmits 5 TCP Idle Session Timeout msec 240000 TCP Idle Session Timeout Count 0 ass Ethernet Errors Late Collisions 0 Ethernet Errors Excessive Collisions 0 Ethernet Errors Others 0 OxFFFF F030 007C OxFFFF F030 011C OxFFFF F030 0100 OxFFFF F030 0128 OxFFFF F030 0134 OxFFFF F030 0124 OxFFFF F030 0130 OxFFFF F030 0138 OxFFFF F030 0110 OxFFFF F030 0114 OxFFFF FO30 0118 OxFFFF F030 00C0 Smart Modules Present 0x00
51. g the Controller s IP Address If you know the SNAP PAC R series controller s IP address see the PAC Manager User s Guide for instructions to change it If you do not know the IP address first check the label on the side of the controller There are two labels one for each Ethernet port so make sure to look at the right one If you still don t know the controller s IP address reset the controller to factory default settings following the instructions in Resetting the Controller on page 42 and then set the IP address as described in the PAC Manager User s Guide Resetting the Controller 1 Carefully insert a straightened paperclip or stiff wire into the small hole labeled RESET 2 Press and hold down the RESET button as described below Simple reset Quickly press and release the RESET button OR The controller restarts Any files strategy and archived strategy in RAM are erased If these items have been stored to Cycle power to the controller oR flash memory they will not be Use PAC Manager to send orased the controller the Restart from Powerup command Restore the factory default The controller restarts settings Any files strategy archived strat egy and persistent variables in RAM and flash memory are erased Press and hold the RESET button until the STAT LED turns solid green and then immediately release the but ton IP addresses are reset to 0 0 0 0 and subnet masks to 255 255 255 0
52. igital features R1 only The following digital features are available when a SNAP PAC R1 controller is used with PAC Control Professional These features are not currently available through PAC Manager or the memory map Use PAC Control commands to configure and access them See the PAC Control User s Guide for more information On pulse and off pulse measurement A pulse is a brief on or off state usually repeated at a specific interval The controller can measure the first pulse that is the amount of time the input stays on or stays off PO time proportional output Time proportional output varies the duty cycle and the percentage of on time within that cycle TPO is often combined with a PID loop and used to control the output for example in a heater or oven e Pulse generation Includes continuous square waves on pulses off pulses and N pulses A pulse turns a digital output on or off briefly either once or for a specified number of times at a specified interval A digital square wave is a specific pattern of on and off states repeated continuously SNAP PAC R Series Controller User s Guide INFORMATION ON FEATURES Analog Point Features For information on configuring analog features see the PAC Manager User s Guide Watchdogs You can set a watchdog to monitor communication with the PC or other host device If the host does not write data to the controller for the length of time set in the watchdog th
53. istrator understands that each controller must have a fixed static IP address whether or not a Dynamic Host Configuration Protocol DHCP server is used on the network For more information on IP addresses see the PAC Manager User s Guide If you are using SNAP PAC R series controllers for data acquisition you can place the controller anywhere on an existing Ethernet network If you are using the controller with control applications however the network segment design will depend on the number of hosts the number of data transactions and issues of data security With fewer hosts and fewer data transactions data packet collisions are less likely and system performance improves If collisions are a problem and especially if you need high throughput and predictable response times it s best to put the controller on a separate switched network segment We recommend switches not hubs For best performance use a 100 Mbps network Segmenting the Control Network If you need to segment the control system network from the main network backbone you can use the two Fthernet interfaces on either the SNAP PAC R series or an S series controller One interface can be connected to the enterprise network and the other used for the control system See the SNAP PAC R Series Controller User s Guide NETWORKING diagram on page 30 This implementation requires PAC Project Professional For more information see the SNAP PAC R series data sheet form 1
54. its using OPC OptoOPCServer User s Guide 1439 Communicating with I O units using Modbus TCP Modbus TCP Protocol Guide 1678 Programming your own applications for SNAP PAC R series controllers using the OptoMMP Communi cation Toolkit previously called the SNAP Ethernet OptoMMP Protocol Guide 1465 l O Driver Toolkit or the OptoMMP memory mapped protocol All of this documentation is on the CD that came with the controller all forms are also available on our website www opto22 com for downloading The easiest way to find one is to search on the form number For Help If you have problems installing or using SNAP PAC R series controllers and cannot find the help you need in this guide or on our website contact Opto 22 Product Support Phone 800 TEK OPTO 835 6786 951 695 3080 NOTE Email messages and Hours are Monday through Friday phone calls to Opto 22 7 am to 5 p m Pacific Time Product Support are grouped together and Fax 951 695 3017 answered in the order Email support opto22 com Fre Opto 22 website www opto22 com When calling for technical support be prepared to provide the following information about your system to the Product Support engineer Software and version being used Controller firmware version e PC configuration type of processor speed memory and operating system e A complete description of your hardware and operating systems including loader and kernel versions
55. lic Switched Telephone Network lines as well as remote serial device communication The RS 232 serial interface supports either a modem connection using PPP or general purpose communication with serial devices allowing you to send and receive data from a serial device connected directly to the controller For additional serial interfaces you can add one or more SNAP serial communication modules on the rack I O Mounting Racks SNAP PAC R series controllers must be connected to the appropriate rack to avoid damage to the controller Both the SNAP PAC R1 and R2 are designed to work with SNAP PAC mounting racks which are available with 4 8 12 or 16 positions for Opto 22 SNAP I O modules SNAP I O The SNAP PAC R series controllers support all SNAP I O modules available on our website SNAP digital I O modules contain four input or output points and SNAP high density digital modules contain 16 or 32 input or output points The SNAP PAC R1 supports 4 channel digital modules with features such as high speed counting For the SNAP PAC R2 only simple digital features are available See the table on page 37 for specifics SNAP analog modules contain 2 to 32 points depending on the module Software SNAP PAC Controllers use Opto 22 s PAC Project Microsoft Windows compatible automation software for programming human machine interface HMI development and OPC connectivity Two versions of PAC Project are available SNAP PAC R Seri
56. ls on the SNAP mounting rack 2 Using the power terminals on the SNAP mounting rack attach the red wire to the terminal and the black wire to the terminal Connect the ground terminal on the SNAP rack to ground 3 Forthe SNAP PS5 not illustrated Using the removable input power connector on top of the power supply apply 120 volts AC power between the two terminals marked AC Connect the ground terminal to ground 4 For the SNAP PS5U not illustrated Using the removable input power connector on top of the power supply apply 240 or 120 volts AC power between the two terminals marked AC Connect the ground terminal to ground 5 Forthe SNAP PS5 24DC illustrated below Using the removable input power connector on top of the power supply apply 24 volts DC power between the two terminals marked DC Connect the ground terminal to ground RED WIRE BLACK WIRE Connect to earth ground as necessary 4AMPS LOGIC POWER SUPPLY 9 4FM ol POWER H SNAP PAC SNAP PACRI o 24 o cho OPTO 2P sNAP P55 24V ETHERNET 1 Loop Power Supply Some analog modules SNAP AIMA SNAP AIMA 4 SNAP AIMA i SNAP AIMA2 1 also require a current loop supply which can be provided by the SNAP PS24 or the SNAP PS24U Both offer 24 volts of DC power the SNAP PS24 at 75 A and the SNAP PS24U at 1 25 A Follow these steps to wire these power
57. module to turn on and off at the line frequency when an input is applied This may be seen visibly as flicker on the channel status LED Digital logic devices having much faster detection times than the human eye can have serious problems with this failure mode For example a digital counter attached to a failed module will count at the input frequency SNAP PAC R Series Controller User s Guide CHAPTER 4 MAINTENANCE AND TROUBLESHOOTING This failure occurs most commonly in applications where the input module is placed in parallel with an inductive load When the load turns off the back EMF goes right through the module destroying one half of the bridge Placing a transorb or large R C snubber in parallel with both the load and input module will significantly reduce the frequency of or eliminate entirely this type of failure Q I have an output module driving a load The load turns on okay but never seems to turn off unless remove power from the relay entirely What might be happening A This problem may occur when using an output module with a high impedance load such as a neon lamp or a small solenoid Loads like these often have relatively large initial currents but relatively small hold in currents The result is that the off state leakage current through the module is insufficient to cause the load to turn on to start with but sufficient to keep it on once started The solution to this problem is to place a power
58. munication security requirements and the availability of an Ethernet network Connecting the Controller Directly to a PC or Master Controller A direct connection using a crossover cable connects just one SNAP PAC R series controller with one host A direct connection is useful for assigning an IP address configuring 1 0 points and testing applications on I O units that will be used later on a network A direct connection is quick easy to do and provides high speed and high security for a small system The direct connection eliminates other variables that could interfere with communication so you can focus on maintenance and troubleshooting Crossover Cables Use an Ethernet crossover cable for direct connections The crossover cable must be a minimum of one meter long Maximum length is 100 meters For reliability we recommend you purchase the cable rather than build it If you build your own crossover cable you ll need an RJ 45 male connector at each end The cable includes four twisted pairs Follow the illustration on the next page for wiring the connectors NOTE The illustration shows on the next page both a straight through cable and a crossover cable The straight through cable is used for connecting the controller to a hub or switch on a standard Ethernet network The crossover cable is used for direct connection to a PC or other host If you re not sure which cable you have hold up both ends so the connector tab is at the
59. ng executed If the STAT LED is on and remains orange it indicates that the controller is running but no flowchart is running If the STAT LED blinks green when the controller starts up it indicates the following 2 fast Loading firmware from Flash memory to SDRAM 5 fast Default settings have been successfully restored Entering fail safe bootloader mode See Resetting the 7 fast s Controller on page 42 for more information If the STAT LED is blinking orange it indicates the following continuous slow There is a problem with the bootloader Contact Product Support continuous fast No IP address is assigned to the controller SNAP PAC R Series Controller User s Guide MAINTAINING THE SNAP PAC R SERIES CONTROLLER If the STAT LED is blinking red it indicates the following Flash chips were not erased properly or programmed 2 slaw Flash programming failure properly Contact Product Support 3 slow Firmware CRC check failed Contact Product Support 4 slow Invalid MAG addross d Contact Product Support hardware revision Firmware or hardware problem Check the power 5 slow Fatal error supply and connections before restarting Call Prod uct Support if the error is repeated 6 slow RAM error Contact Product Support Firmware or hardware problem Confirm Ethernet 7 slow Leader problem cables are connected Try turning off power
60. ng frequent timeout messages from the I O unit you can change the TCP parameters in PAC Manager 1 Choose Start Programs Opto 22 gt PAC Project Software gt PAC Manager 2 In the PAC Manager main window click the Inspect icon amp l 3 Inthe IP Address field type the IP address of the controller Click Status Write SNAP PAC R Series Controller User s Guide CHAPTER 4 MAINTENANCE AND TROUBLESHOOTING z3 Inspect 1 0 Unit v Port 2001 Timeout 1000 ms Status Status Write area last read at 10 11 06 12 26 56 IP Address 10 192 55 67 r Status Write Status Read Status Write Point Config Digital Bank Digital Point Analog Bank Analog Point High Density System L Scratch Pad gt DataLog gt PID Events gt Communications gt Other gt Address Description OxFFFF F038 0004 OxFFFF F038 0008 OxFFFF F038 0010 OxFFFF F038 0014 OxFFFF F038 0018 OxFFFF F038 001C OxFFFF F038 0020 OxFFFF F038 004C OxFFFF F038 0050 OxFFFF F038 0054 OxFFFF FFFF F050 OxFFFF FFFF F058 Always BootP DHCP On Powerup Degrees F C Comm Watchdog Time msec 0 Disable TCP Minimum Retransmission Timeout msec TCP Initial Retransmission Timeout msec TCP Retransmission Attempts TCP Idle Session Timeout msec 0 Disable Max Digital Scantime msec Max Analog Scantime msec Scanner Flags Secondary IP Address Secondary Subnet Mask Send powerup clear Operation Commands Send Comm
61. not using PAC Control Whichever tool you use for configuring 1 0 be aware of the impact if you later change configuration For example if you configure I O in PAC Manager download the configuration file to I O units and then later add a point in PAC Control remember that your configuration file doesn t contain that point SNAP PAC R Series Controller User s Guide 11 USING PPP OVER A MODEM Using PPP Over a Modem Use the rest of this chapter only if you have SNAP PAC R series controllers installed at remote locations or in other places where an Ethernet network is not available and you are using modems to communicate between the controller and a PC The modems use the point to point protocol PPP to communicate You can set up communication so that the controller can dial in to a PC so that PCs can dial into the controller or both PC dials in to controller P Modem SS s LI f a bg SNAP PAC R series Modem controller S PC with dial up networking Ry NOTE You can communicate with a SNAP PAC R series controller using a modem and PPP at the same time you are communicating with the controller over an Ethernet network Here how to set up PPP 1 Use PAC Manager to assign an IP address to the SNAP SNAP PAC R series controller following the instructions in the PAC Manager User Guide 2 Follow steps in the next section to configure PPP Attach the modem to the system following the steps below
62. ollow instructions in the PAC Manager User s Guide Opto 22 form 1704 If you are using PAC Control O units and points must be configured to match the PAC Control strategy you will run You can configure most controller features and point functions either in PAC Control or in PAC Manager In most cases if you are already in PAC Control configuration is easier there and you can use the loopback IP address for SNAP PAC R series controllers controlling themselves However some functions cannot be configured in PAC Control If you use PAC Manager you can save your configuration to a file load it to multiple I O units at once and use it for referencing points in OPC However you cannot use the loopback address in PAC Manager Choose your configuration tool based on what you need to do e You have only one I O unit or I O unit e You have multiple I O units whose configurations configurations are different are exactly the same or similar e The strategy will run on I O units that are e You are using a modem connection PPP or controlling themselves using the loopback IP SNMP address 127 0 0 1 e You are using event messages or email e You are using an Ethernet network for e You are configuring events and reactions on the communications I O unit in addition to strategy logic e The strategy handles all logic you are not also e You are using OPC to communicate with I O units configuring events and reactions on I O units e You are
63. ontrol them using Memory Map Control Side Run PAC Control flowcharts SNAP PAC R Series Controller User s Guide CHAPTER 3 SYSTEM INFORMATION The I O Side of the Controller The controller reads and writes to the I O points using its I O side memory map This side of the SNAP PAC R series controller is like SNAP EB series brains You can think of the controller s memory map as a grid of mailboxes with each mailbox having its own memory address Each mailbox address has a specific purpose For example one address holds the state of a single digital point another address holds counter data for the same point There s an address that stores the controller s firmware version one that contains the minimum value of a specific analog point and many more If you are familiar with programmable logic controllers PLCs you ll see that the memory map is similar to a register Most SNAP PAC R series controllers run PAC Control flowcharts that automatically manipulate the memory map so you probably won t need to understand it in detail If you do need to refer to it however the complete list of memory map addresses is in Opto 22 form 1465 the OptoMMP Protocol Guide The Control Side of the Controller The control side of the controller is like a traditional Opto 22 industrial controller In the control side the controller runs PAC Control flowcharts These flowcharts provide the logic that controls processes through the system Comm
64. ound If the equipment is not floating make certain that the two pieces of equipment being connected are at the same ground potential in order to eliminate the possibility of a ground loop through the module A ground loop through the module could result in almost anything from inaccurate readings to catastrophic failure ofthe module SNAP analog modules like any high level electronics require protection from electrical noise in high noise environments such as installations near arc or plasma equipment or AC inverters If the SNAP analog system is to be installed in such an environment be certain that the system is enclosed in an appropriate enclosure Opto 22 has several documents available that discuss grounding and shielding practice noise mitigation and electromagnetic compatibility e Grounding Shielding Noise and Compatibility Opto 22 form TN9603 Grounding and Wiring Practices form TN9603A e Operational Interferences and Noise form TN9603B e Interference Generation and Compatibility form amp TN9603C SNAP PAC R Series Controller User s Guide SNAP Mounting Racks and Power Supplies Introduction As shown in the illustration below a SNAP PAC R series I O system has a SNAP PAC R series controller SNAP PAC rack power supply and modules This appendix includes wiring diagram examples for assembling your SNAP PAC R series controller SNAP PAC rack and power supply For more information especially for information
65. pplies These products include but are not limited to OptoTerminal G70 OptoTerminal G75 and Sony Ericsson GT 48 see the product data sheet for specific warranty information Refer to Opto 22 form number 1042 for complete warranty information Cyrano Opto 22 FactoryFloor Optomux and Pamux are registered trademarks of Opto 22 Generation 4 ioControl ioDisplay ioManager ioProject ioUtilities mistic Nvio Nvio net Web Portal OptoConnect OptoControl OptoDataLink OptoDisplay OptoOPCServer OptoScript OptoServer OptoTerminal OptoUtilities PAC Control PAC Display PAC Manager PAC Project SNAP Ethernet 1 0 SNAP 1 0 SNAP OEM 1 0 SNAP PAC System SNAP Simple 1 0 SNAP Ultimate 1 0 and SNAP Wireless LAN 1 0 are trademarks of Opto 22 ActiveX JScript Microsoft MS DOS VBScript Visual Basic Visual C and Windows are either registered trademarks or trademarks of Microsoft Corporation in the United States and other countries Linux is a registered trademark of Linus Torvalds Unicenter is a registered trademark of Computer Associates International Inc ARCNET is a registered trademark of Datapoint Corporation Modbus is a registered trademark of Schneider Electric Wiegand is a registered trademark of Sensor Engineering Corporation Nokia Nokia M2M Platform Nokia M2M Gateway Software and Nokia 31 GSM Connectivity Terminal are trademarks or registered trademarks of Nokia Corporation Sony is a trademark of Sony Corporation Eric
66. r Each 1 0 unit is connected to its own group of field devices but all are connected to the same two networks SNAP PAC SNAP PAC R series R series as 1 0 only as 1 0 only Field devices location 2 Field devices location 1 In this configuration if one network goes down devices can still communicate because the SNAP PAC S series controller and the SNAP PAC R series controllers both have two network interfaces and each PC in this system has two network interface cards SNAP PAC R Series Controller User s Guide SPECIFICATIONS CONNECTORS AND DIMENSIONS Specifications Specifications Connectors and Dimensions The following table shows specifications for the SNAP PAC R1 and R2 controller Battery backed RAM Flash Processor 200 MHz 32 bit ColdFire 5475 with integrated floating point unit FPU Memory Total RAM 16 MB 4 MB available for PAC Control strategy 2 MB available for file storage 2MB 8 MB 3 25 MB available for PAC Control strategy 384 KB available for file stor age Backup battery 3 volt rechargeable Data retention with power off 3 years Communication Ethernet host and I O RS 232 serial host only Two independent 10 100 Mbps Ethernet network interfaces RJ 45 connectors Each interface has a separate IP address One RS 232 serial port with hardware handshaking I O unit compatibility SNAP PAC I O units SNAP PAC R series and EB series I O units
67. r I O unit with largest rack 8 serial 8 serial 16 HDD 16 HDD 1 Available when used with PAC Project Professional 2 4 channel digital modules 3 High density digital modules SNAP PAC R Series Controller User s Guide SNAP PAC R1 AND R2 COMPARISON CHART EJ SNAP PAC R Series Controller User s Guide Maintenance and Troubleshooting This chapter includes maintenance and troubleshooting information for SNAP PAC R series controllers In This Chapter Maintaining the SNAP PAC R Series Controller ESRB URSI Lose nis abc if 42 Changing the Controller s IP Address 42 Peseti Die 2111 2 Sa cee eee Ru Rt 42 Loading New FINTINONE aaepe acta nina 43 seting meand DER aeree 43 PIRE RU oiseau eam endo rti n 43 Troubleshooting the SNAP PAC R Series Controller Getting Device and Firmware Information 45 Communicating with the Controller 46 Additional Troubleshooting Tools 11111122 50 Module Troubleshooting Frequently Asked Questions 52 SNAP Analog Troubleshooting s 54 SNAP PAC R Series Controller User s Guide MAINTAINING THE SNAP PAC R SERIES CONTROLLER Maintaining the SNAP PAC R Series Controller Backup Battery The SNAP PAC R series controller has a rechargeable battery that receives charging current whenever the brain has power It will retain data for up to three years with the power off Changin
68. resistor sized for 8 10 times the rated maximum leakage current for the module in parallel with the load Make sure that this resistor has a high enough power rating for the application Q I have a new AC output driving a solenoid It turns on okay once but will not turn on again What is going on A Some solenoids and some types of halogen lights incorporate a diode in series with the coil or filament This causes the light to behave as a half wave rectifier Opto 22 output modules have a built in R C snubber circuit in parallel with the output The capacitor in this circuit charges up but cannot discharge through the series diode causing a voltage to appear across the output terminals Because the module must see a zero voltage across the terminals to come on it can t turn on again in this situation The solution is to find a lamp or solenoid that does not have an internal diode a potential work around would be to put a high value resistor several tens of KOhms across the output terminals of the module to allow the capacitor to drain its charge Q have an AC output module in a circuit wired in series ANDed with another contact When that other contact closes my load turns on momentarily even though my output module is off Is my module broken A This situation arises when the output module does not see a voltage across its terminals This occurs when another contact is wired in series with the module between the module and th
69. roblems communicating with the SNAP PAC R series controller after your network is certified contact Opto 22 Product Support See page 5 Additional Troubleshooting Tools Making Sure the Controller is in Normal Mode If you are having trouble communicating with the controller it might be in fail safe bootloader mode This is a diagnostic mode that you don t need to access unless you are troubleshooting a problem with Opto 22 Product Support The controller restarts in fail safe bootloader mode when you hold down the RESET button longer than the time needed to restore the default settings If your controller restarts in fail safe bootloader mode simply cycle power to the device This action performs a simple reset and allows you to communicate with the controller For more information on using the RESET button see Resetting the Controller on page 42 TCP Settings Retransmit timeout RTO refers to the length of time the controller waits while communicating before timing out The RTO is determined by the controller s TCP IP stack and the stack continually recalculates the RTO based on recent network traffic If the network becomes busier for example the stack automatically adjusts the RTO to a higher value If the TCP IP stack times out while trying to transmit data it doubles the current RTO and tries again This process continues for five retries after that the controller stops trying and sends a timeout message If you are receivi
70. s Guide and OptoOPCServer User s Guide SNAP PAC R Series Controller User s Guide 19 SYSTEM ARCHITECTURE C or Active X Write your own software applica OptoMMP Com tion to communicate with the munication Toolkit System and controller s memory map Opto 22 s IEEE 1394 based proto col and controller s memory map See OptoMMP Protocol Guide System Architecture Because SNAP PAC R series controllers are a combination of controller and 1 0 processor their architecture is more complex than that of devices such as the SNAP EB series brains which are I O processors only The next few pages show the capabilities of this versatile system starting with the simplest and moving to the more complex Your application may require only some of these capabilities but as your needs expand remember that SNAP PAC R series I O can be used in all the ways shown simultaneously Understanding the SNAP PAC R series Controller The SNAP PAC R series controller merges two functions that are usually located in separate pieces of hardware input output processing and flowchart based control These two functions are handled by two sides of the controller as illustrated below The rack is shown with the SNAP PAC R series controller on the left and the input output modules on the right The modules on the rack connect with devices in the real world such 1 0 Side Read write to points as the light bulb to monitor or c
71. sion Firmware Version Firmware Version Date Firmware Version Time Unit Type Unit Description I 0 Unit Hardware Revision Month I 0 Unit Hardware Revision Day I 0 Unit Hardware Revision Year Installed Ram MAC Address TCP IP Address TCP IP Subnet Mask TCP IP Default Gateway TCP IP Name Server Secondary MAC Address Secondary TCP IP Address Secondary TCP IP Subnet Mask PUC Received 0 0 Rl la 1 R8 0a 03 25 2007 13 55 41 0x00000078 SNAP PAC R2 1 25 2007 16777216 D0 A0 3D 00 C1 48 10 192 54 115 255 255 192 0 If information does not appear contact Product Support See page 5 SNAP PAC R Series Controller User s Guide Date and time data was last read Click to update data Solving Network Problems CHAPTER 4 MAINTENANCE AND TROUBLESHOOTING If there are recurring problems in communicating with the controller check your network The wires switches and so on in your Ethernet network are not part of the Opto 22 hardware but any problems in your network may affect communication with Opto 22 products Create a Network Diagram First create a network diagram and verify the following Cable connectors are firmly inserted The switch has power Switch LEDs indicate that the connection is up Neither the PC nor the controller uses the switch s uplink port The SNAP PAC R series controller s LNK LED is lit Check Ethernet Errors Next use PAC Manager to check Ethern
72. sly using all applicable methods The reason lies in the nature of IP In serial communication a single data request is sent by one device to another The first device must wait for a response before any additional communication can be carried out IP however can establish multiple simultaneous sessions so many data requests can be sent at once without waiting for any individual response Each request gets a response but the link isn t idle while waiting for responses In addition IP can simultaneously handle multiple requests from multiple devices A PC can communicate with all SNAP PAC R series controllers on the same network all at the same time and multiple PCs can communicate with one controller at the same time So for example a SNAP PAC R series controller can respond to directions from a Modbus master give analog point data to a technician using PAC Manager and carry out instructions from a custom C application all at once KJ SNAP PAC R Series Controller User s Guide CHAPTER 3 SYSTEM INFORMATION Accessing SNAP R Series Controllers over the Internet Since SNAP PAC R series controllers are just like any other hardware on the Ethernet network you can access them over the Internet in exactly the same way you would access a computer The details depend on your network and Internet connection Consult your system or network administrator or your Internet Service Provider ISP for more information Choosing Communica
73. sses e Power redundancy so the failure of a single supply causes only a single rack failure not a total system failure e Fewer voltage drops and ground loops Voltage drops and subsequent ground loops may occur when power is distributed over a large system Always use a separate power supply for the field side of the 1 0 Using the rack supply for field actuation and monitoring defeats the isolation the I O module offers and therefore increases the chance of a ground loop within the control system Additionally a sudden change of current on the field side can cause undesirable voltage fluctuations that may interfere with the computer s operation SNAP PAC R Series Controller User s Guide APPENDIX A SNAP MOUNTING RACKS AND POWER SUPPLIES Determining Power Requirements Both the SNAP PS5 and the SNAP PS5 24DC power supplies provide 5 VDC power for loads up to 4 Amps The SNAP PS5U provides 5 VDC for loads up to 5 Amps In most cases this power is sufficient for a SNAP processor a rack and the associated I O modules However some combinations of modules especially special purpose modules may require additional power You can use the following table to help determine power needs for your I O units SNAP PAC R series controller 1 1 200 1 200 SNAP IDC5 SW digital input module SNAP IDC5 SW NC digital input module SNAP AITM 8 analog input module 0 200 Isolated analog input and output modules part numbers ending in i or iSR
74. sson is a trademark of Telefonaktiebolaget LM Ericsson All other brand or product names are trademarks or registered trademarks of their respective companies or organizations SNAP PAC R Series Controller User s Guide Table of Contents Chapter T DVGIVIBW os2ds ERRORS A EARAVEREE MORS RPS REGE RO I E REFS dd 1 OCU ON iN 1 Ethernet CORTE eeren ees etuer ta cet een ta restet s 2 Seral ORIGO a oediadbs ed adr bbb tptitatee dtque ligadas tbt E 2 VO Mounting RACKS REEL 2 SNAR IO erete a E E E E dee cantele nackte 2 JD TE 2 Software VEIT IT 3 uv DAD CCS RC TREC 4 Related Documentation een eee TTD 4 PIN NUS NP IM PEPPER ks aed MMe RONDE EEUU TES 5 Chapter 2 Installation saccstecececvetcesticsceies ties cocudedeneccieseeeed 7 What You Will Need oeconiea uer nnne tre x psEtue ect Prspn ctetu biete ORA 7 stalling SONAE MERETUR E E E E 7 Installing HardWarEssssrinssisorisot iia Eden dut rtr E E ATO ARES 8 stalling Modules On th Rat eirisisivcreneretesi tarros sree xu tetera k EE E 8 Removing a Module essaiar enan eaa n RR OR RERUE 9 stalling the CONUOUED asc oet edat e tbid niea RI CO eddie n 10 Whats NEKU e K M 10 onera VO POP 11 Using PPP Over a MO GIVE eene dedu edu he y S eR ERR bg SE bc in le Reb ese 12 Configuring PPP on the Controller oit ad Ga Teac Rn eap ata ER E rada 12 Attaching the Modem to a SNAP PAC R Series
75. supplies 1 Mount the SNAP PS24 or SNAP PS24U power supply in a location where the attached output power wires will reach the field connector for SNAP analog modules SNAP PAC R Series Controller User s Guide APPENDIX A SNAP MOUNTING RACKS AND POWER SUPPLIES The white and red wire is the positive wire 24 VDC The white and black wire is the negative wire 24 VDC return If you are wiring directly to the module see the wiring diagram for the specific module you are using Examples for an input module are shown in the following diagrams SNAP PS24 In this diagram the SNAP PS24 power supply supplies power directly to the input module The SNAP PS5 supplies power to the rack RED WIRE BLACK WIRE 3 Bes tos 24V 3 4 AMP 5V Q 4AMP H POWER SUPPLY POWER SUPPLY Om FM M m us SNAP PS24 SNAP PS5 r CURRENT LOOP RECEIVER arm POWER E SNAP PAC SNAP PACRI OPTO 22 PTO 22 SNAP PS24 OPTG 22 SNAP PS5 x INPUTWOLTAGE RANGE OPTO 22 Bi E INPUT VOLTAGE RANGE fa DET RE 35 SNAGET GIE SNAP M32 INPUT PWR B0H MEX E a EN NEUTRU S Gy SNAP PS24U Here the SNAP PS24U power supply supplies power directly to the input module The SNAP PS5U supplies power to the rack RED WIRE SNAP PS24U SNAP PSSU N E BLACK WIRE CURRENT LOOP RECEIVER SNAP PS24U SNAP PS5U
76. t or on purpose Pinging the Controller If you still cannot communicate with the controller after you have checked these items try to reach it using the PING protocol 1 Choose Start Programs Accessories and open a command prompt 2 Atthe prompt type ping controller s IP address For example type ping 10 192 54 40 If the controller responds go to Accessing the Controller with PAC Manager on page 47 If the PING command cannot be found choose Start Control Panel Network Make sure TCP IP is configured as a protocol and that an IP address and subnet mask are assigned If you see the message Destination host route not defined the controller probably has an inappropriate IP address and subnet mask Make sure the IP address and subnet mask on the controller are compatible with those on the computer Follow the directions beginning on page 42 to check the IP address and subnet mask on the controller and change them if necessary If you see the message No response from host check the following e Are the computer and controller correctly connected Is the controller turned on e Arethe IP address and subnet mask on the controller compatible with those on the computer e sthe controller in reset mode Check for a blinking STAT LED STAT blink codes are shown on page 43 If you still cannot ping the controller contact Opto 22 Product Support See page 5 Accessing the Controller with PAC Manager Once you know
77. tion Methods How do you need to communicate with SNAP PAC R series controllers to match the tasks your application requires Check the following table for help in choosing communication methods and finding out where to look for more information on them Configure controllers PAC Manager I O points and other functions or PAC Control I O points only OptoMMP Commu nication Toolkit or IEEE 1394 based protocol If you are using PAC Control configure the system in PAC Control configure mode See the PAC Control User s Guide For the Communication Toolkit or IEEE 1394 based pro tocol see OptoMMP Protocol Guide Monitor and control processes PAC Control flow chart logic PAC Manager Inspect window or OptoMMP Commu nication Toolkit or IEEE 1394 based protocol See PAC Control User s Guide amp Command Reference CAUTION Events and reactions set up using alternate methods are faster than flowchart logic but be careful if you use them They can conflict with PAC Control logic because both write to the controllers memory map For Communication Toolkit or IEEE 1394 based protocol see OptoMMP Protocol Guide Send email to or page someone Send SNMP trap PAC Manager for OptoMMP Commu nication Toolkit or If you are using PAC Control configure email using PAC Manager See the PAC Manager User s Guide Monitor devices through an configuration IEEE 1394 based For Communication Toolkit or
78. to the P controller and turning it back on again Call Product Support if the error is repeated Firmware failed to initialize 11 slow communications on Contact Product Support ETHERNET 1 Firmware failed to initialize 12 slow communications on Contact Product Support ETHERNET 2 13 slow Real time clock failure Contact Product Support PPP LED The programmable PPP LED must be set to PPP the default in order to indicate the current state of a PPP connection For more information on programming the PPP LED see the OptoMMP Protocol Guide form 1465 or the PAC Manager User s Guide form 1704 The PPP LED blink codes are as follows There is a PPP connection A PPP connection is being established The controller is listening on its PPP port PPP is disconnecting After disconnecting if Incoming PPP is enabled in PAC Manager PPP will listen for incoming calls Otherwise PPP will enter the Idle state from which it can initiate an outgoing call For more information on con figuring PPP see the PAC Manager User s Guide The PPP service has been instructed to stop and is shutting down Green Solid Green Slow Orange Solid Orange Slow Red Slow Off n a The PPP connection is idle or disabled E SNAP PAC R Series Controller User s Guide 232 LED CHAPTER 4 MAINTENANCE AND TROUBLESHOOTING The 232 LEDs indicate the following Green The controller is transmitting data Red
79. trol NOGWOIKO a oue xc exu t rare e shakes erbe YE EE kx PEE ER Gaye ss 27 Using the Controller in an Independent Network 0 00 cece cece cece eee eee e es 28 Communicating with the System via a Modem sss 28 Network Architecture Diagrams 0 00 c cece cece e cena e cece este enna eee eee enna 29 or ewe ur Me T 29 Network Segmenting Ethernet Connections to Host and 1 0 Units 04 30 us sau side TM 31 Specifications Connectors and Dimensions ccce menm 32 Poma M 32 The following table shows specifications for the SNAP PAC R1 and R2 controller 32 S O cal eet E E te tRURU LEM dct cases ee ES UE 32 Connectors and LEDS a 33 Dimensions a aeae re T EN E TITRE 34 Information on Features n died etpaeneeeiniaieleiiacind eitadiad eiiaetadediadiadeaeds 35 Wir ldem nu Soranei aia E e A EE O EOT 35 Analog Point Features escaso dtxebassese tertio ine atte ento EE 36 Serial COMMUNION nen ao s deese a ache Sake E ve RA a R a A 36 PIDLOODS saurer A ata ees E T E E eo eon ages 37 Additional Features e enapan S E E E tend RS 37 SNAP PAC RT and R2 Comparison Chart sss 37 SNAP PAC R Series Controller User s Guide Chapter 4 Maintenance and Troubleshooting sueue 41 Maintaining the SNAP PAC R Series Controller L ecce me 42 Backup Batte Deas updated
80. tware J File system All of the protocols shown in the diagram except FTP can be used to communicate with both the fixed memory map area and the Scratch Pad area so you can access both 1 0 point data in the fixed area and strategy variable data placed in the Scratch Pad area In addition strategy variable data from the PAC Control database can be directly used by OPC clients All protocols except FTP can also read strategy variable data from the Scratch Pad area of the Memory Map FTP can be used to access files on the SNAP PAC R series controller which are on the control side but can contain data from the I O side or any other data For more information on the controller s file system and FTP see the PAC Control User s Guide and the PAC Manager Users Guide SNAP PAC R Series Controller User s Guide andthe buiuuejd UI aq 35nuu nof njaJ amp D SOW BY BSN NOA WaAISAS BY JO saniliqede SOW aU 5321 jUO2 pIOAe 0 2 SI Seale dew fjouJaui 0 HUM pue Hulpea ui uoneuipjooo uo Duiob si uone iunuJuJ00 192d 0 122d pue 1a o uo 311 JO apis 01 U02 y uo HulUUNL si ABazeWs aui a luM snoauexnuurs pasn aq ue sjo20 01d Je a uis CHAPTER 3 SYSTEM INFORMATION When all these capabilities we ve discussed are put together you can see the versatility wealth of applications of the SNAP PAC R series 1 0 system shown below The Complete System Pale peg YDIEIIG ay WOJ ejep ajqeuen K5a1ens peal ue sje onuoo zz o1do
81. twork architecture 26 certification 50 Ethernet errors 49 independent 28 modem communication 28 OptoEnetSniff 50 segmented 27 troubleshooting 49 NVRAM 13 O offset 36 OPC 5 24 Opto 22 Product Support 5 OptoEnetSniff 50 output clamping 36 P PAC Manager 4 peer to peer communication 22 PID loops 37 ping 47 point to point protocol 28 power supply current loop 58 determining requirements 57 wiring 56 PPP 28 configuring 12 LED 44 45 Product Support 5 Q quadrature counters 35 quick start 7 R rack for I O modules installing 8 removing I O modules 9 replacing backup battery 42 RESET button 42 50 restore default settings 42 retransmit timeout RTO 50 RS 232 port 33 S scaling 36 Scratch Pad areas 23 serial communication 36 serial port 33 SMTP 24 SNMP 24 oftware installing 7 pecifications 32 raight through cable 26 rategy 21 system architecture 26 t t t t tA T TCP IP multiple sessions 18 settings 50 stack 50 technical support 5 third party software 24 timeout 50 troubleshooting analog I O modules 54 blink codes 43 LED descriptions 33 network 49 Product Support 5 U utilities OptoEnetSniff 50 W watchdog 35 36 SNAP PAC R Series Controller User s Guide atus conditions blink codes 43 E SNAP PAC R Series Controller User s Guide
82. ules used For more information see Determining Power Requirements on page 57 Installing Software In your CD ROM drive insert the CD that came with the controller The installation wizard should start automatically If it doesn t use Windows Explorer to navigate to your CD ROM drive and then double click setup exe Follow directions to install the software NOTE If you run PAC Project applications in Microsoft Windows XP make sure to use the Windows Classic theme Otherwise a Microsoft bug with how themes are handled may cause the system to crash SNAP PAC R Series Controller User s Guide INSTALLING HARDWARE Installing Hardware Assemble the rack and power supply according to the directions that came with them For help with wiring see the product data sheets which are available on our website at www opto22 com Installing Modules on the Rack Modules snap into any position in the row of connectors on the SNAP PAC rack Each module connector has a number The SNAP PAC R1 supports full digital features on standard SNAP digital modules including high speed counting up to 20 kHz depending on the module quadrature counters time proportional output TPO and pulse generation and measurement For the SNAP PAC R2 digital features are limited to on off status input latching and watchdog timer CAUTION Make sure you are using a SNAP PAC rack for your SNAP PAC R series controller Using the wrong rack will severely damage
83. use a SNAP PAC R series controller is with a modem connection This use is ideal for remote installations for example a communication tower or a pipeline or in other places where a wired Ethernet network is not practical Communication via modem uses the Point to Point Protocol PPP over an RS 232 link instead of an Ethernet link Modem Modem LIS 1 SNAP PAC R series Computer Telephone lines controller and 0 on rack The system can dial out to a PC connected to a modem or the PC can dial into the system or both If the system is also communicating via Ethernet the network ID for the PPP interface on the controller must be different from the controller s Ethernet IP network ID For more details on configuring the controller for use with a modem see Using PPP Over a Modem on page 12 SNAP PAC R Series Controller User s Guide CHAPTER 3 SYSTEM INFORMATION Network Architecture Diagrams Because SNAP PAC R series controllers have two Ethernet interfaces and an RS 232 serial interface these controllers are suitable for use in a variety of system layouts and architectures For example the dual independent Ethernet interfaces let you configure a network for link redundancy or segmented networking As described in the previous section the PPP serial interface provides a dial up modem link for remotely located control systems The serial interface can also be used to connect a serial device such as a barcode scanner B
84. vailable e The SNAP PAC R1 controls a mix of SNAP analog digital both standard and high density and serial modules Full digital functions are available for up to 16 standard digital modules e The SNAP PAC R2 also controls a mix of SNAP analog standard and high density digital and serial modules Digital functions are simplified up to 16 standard digital modules can be used Built in functions and comparisons of the SNAP PAC R1 and SNAP PAC R2 are shown in the table on page 37 SNAP PAC R Series Controller User s Guide E INTRODUCTION Ethernet Communication SNAP PAC R series controllers communicate over standard 10 100 Mbps Ethernet networks and can be attached to existing wired or wireless Ethernet networks The controllers can also be used in an independent control network built with standard off the shelf Ethernet hardware SNAP PAC R series controllers include two 10 100 Mbps Ethernet interfaces for networking to Ethernet hosts and to other I O units These independent Ethernet ports have separate IP addresses that can be used with PAC Project Professional software to set up redundant network links to safeguard the availability and reliability of an I O system or to segment a control system s network from the enterprise LAN Serial Communication SNAP PAC R series controllers provide an RS 232 serial link to support Point to Point Protocol PPP modem connections for creating TCP IP networks over serial or PSTN Pub
85. wireless network Physical Layer All SNAP PAC R series controllers communicate over a 10 or 100 Mbps wired Ethernet link SNAP PAC R series controllers can also communicate using a modem over PPP Transport Layer The key to SNAP PAC R series controller communication flexibility is the transport layer Internet Protocol IP Both the Transmission Control Protocol TCP and the User Datagram Protocol UDP are used with IP Application Layer Because SNAP PAC R series controllers use standard IP for the transport layer many communication options are possible in the application layer After the controller is installed and has an IP address assigned see page 10 you can communicate with it using the following methods e PAC Manager software utility is used for assigning IP addresses configuring I O points and features and performing onetime reads and writes e PAC Control strategies running on a SNAP PAC R series I O system industrial controller can configure read and write to 1 0 points controlled by controllers SNAP PAC R Series Controller User s Guide COMMUNICATION OPTIONS e Custom software applications are easy to develop using our OptoMMP Communication Toolkit with ActiveX components and C classes They use an IEEE 1394 based protocol to read and write to SNAP PAC R series controllers For developers not using Microsoft Windows our IEEE 1394 based protocol is open and documented Modbus TCP provides a direct conne

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