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SNAP PAC BRAINS USER'S GUIDE

1. Chapter 1 Introduction information about the guide and how to reach Opto 22 Product Support Chapter 2 Installing a SNAP PAC Brain quick start steps to get SNAP PAC brains up and running quickly Chapter 3 System Architecture conceptual information on networking and communicating with SNAP PAC brains and brain specifications Chapter 4 Maintenance and Troubleshooting changing IP addresses resetting the brain to factory defaults and upgrading firmware blink codes and other troubleshooting assistance Other Documents You May Need See the following additional guides for the information listed All guides are available on the Opto 22 website www opto22 com some are included on the CD that came with the SNAP PAC brain Assigning IP address loading new firmware etc PAC Manager User s Guide 1704 PAC Control User s Guide 1700 Designing flowchart based control programs for the system requires a SNAP PAC S series or PAC Control Command Reference 1701 R series industrial controller PAC Control Commands Quick Reference Card 1703 Communicating with SNAP PAC brains using OPC OptoOPCServer User s Guide 1439 Connecting the SNAP PAC System with databases OptoDataLink User s Guide 1705 Communicating with SNAP PAC brains using Mod bus TCP Modbus TCP Protocol Guide 1678 Programming your own applications for SNAP PAC brains using the OptoMMP Communication Toolkit OptoMMP Protocol Guide 14
2. Je SNAP PAC Brains User s Guide CHAPTER 3 SYSTEM ARCHITECTURE SNAP PAC Brain as an Independent I O Processor As the following diagram illustrates you can communicate with an independent SNAP PAC brain using Modbus TCP the OptoOPCServer available separately SNMP SMTP or applications you develop using the free OptoMMP Communication Toolkit or our OptoMMP protocol Custom application using 3 Activex or C ___ OptoMMP protocol Modbus TCP Any OPC client software through OptoOPCServer purchase separately Ethernet network Third party HMI Wonderware Intellution e Iconics Modbus TCP hardware and software Networking From a physical standpoint SNAP PAC brains can be networked in several ways e Connected directly to a PC or controller using a standard Ethernet cable e Attached to an existing TCP IP Ethernet network e part of an independent network built with standard Ethernet hardware The networking method you use depends on several things including whether you need control or data acquisition the number of PCs and 1 0 units you are using the speed and volume of communication security requirements and the availability of an Ethernet network As an option in any network you can install multiple brains in a daisy chain configuration See page 15 for more information SNAP PAC Brains User s Guide NETWORKING Connecting the Brain Directly to a PC or
3. memory map copying 21 minimum value 20 Modbus TCP 3 9 mounting rack installing 6 N network architecture 13 attaching brain to existing network 14 certification 30 daisy chaining brains 15 Ethernet errors 29 incorrect connections diagram 16 independent 14 interfaces 15 17 troubleshooting 29 offlatch 19 off pulse measurement 20 offset definition 20 on latch 19 on pulse measurement 20 OPC 3 9 Opto 22 Product Support 4 OptoDataLink 3 10 OptoMMP 3 10 OptoOPCServer 9 PAC Control 3 9 PAC Manager 3 9 peak 20 PID loop control 20 ping 27 port access limiting 21 Product Support 4 pulse generation 20 measurement 20 Q quadrature counter 19 quick start 5 R rack for I O modules installing 6 ramping analog output point 20 removing 0 modules 7 RESET button 24 30 restoring default settings 24 retransmit timeout RTO 31 RSTP 16 S scaling description 20 Scratch Pad areas 21 security 21 SNAP PAC System illustration 12 SNAP PAC EB1 features 18 SNAP PAC EB2 features 18 SNMP 21 square wave generation 20 STAT LED 17 state of digital point 19 status conditions blink codes 25 STP 16 system architecture 13 T TCP IP multiple sessions 10 settings 31 stack 31 echnical support 4 hermocouple linearization definition 20 imed event 21 imeout 31 ime proportional output 20 TPO 20 roubleshooting b
4. Both the Transmission Control Protocol TCP and the User Datagram Protocol UDP are used with IP Application Layer Because SNAP PAC brains use standard IP for the transport layer many communication options are possible in the application layer After the I O unit is installed and has an IP address assigned see page 8 you can communicate with it using the following methods e PAC Control strategies running on a SNAP PAC controller can configure read and write to I O points on SNAP PAC brains e PAC Manager software in addition to its use for assigning IP addresses can also be used to configure I O points and features and perform onetime reads and writes Modbus TCP provides a direct connection with Modbus TCP hardware or software or third party software applications which can read or write to I O points on SNAP PAC brains OPC OLE for Process Control uses OptoOPCServer to serve 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 SNAP PAC Brains User s Guide 9 COMMUNICATION OPTIONS e OptoDataLink exchanges 0 point data with ODBC compliant databases including Microsoft SQL Server Microsoft Access MySQL and others OptoDataLink can be purchased separately or as part of PAC Project Professional e SMTP Simple Mail Transfer Protocol connects a SNAP PAC
5. Controller A direct connection using a standard Ethernet cable connects the SNAP PAC brain with one host either a PC or a controller A crossover cable is not required for direct connection to a host You can use either Ethernet interface on the brain for the connection Additional SNAP PAC brains can be daisy chained from the first brain using the brain s second Ethernet network interface which acts as a network switch See Using SNAP PAC Brain Network Interfaces on page 15 for more information If you need only a small control or monitoring network and have no existing Ethernet network a direct connection is ideal It s quick easy and inexpensive because it requires only cables no separate Ethernet switches or routers It also provides high speed and high security for a small system A direct connection is also useful for assigning an IP address configuring points and testing applications The direct connection eliminates other variables that could interfere with communication so you can focus on maintenance and troubleshooting Attaching the Brain to an Existing Ethernet Network The first rule in attaching SNAP PAC brains 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 brains For best performance use a 100 Mbps network In addition make sure the system administrator under
6. OxFFFF F030 O10C Milliseconds Since Powerup 2589031 Digital Point OxFFFF F030 0058 TCP Minimum RTO msec 250 Analog Bank OxFFFF F030 0064 TCP Initial RTO msec 3000 OxFFFF F030 0068 TCP Retransmits 5 Analog Point OxFFFF F030 006C TCP Idle Session Timeout msec 240000 High Density OxFFFF F030 0108 TCP Idle Session Timeout Count 0 Ethernet Errors System p OXFFFF F030 0070 Ethernet Errors Late Collisions o OxFFFF F030 0074 Ethernet Errors Excessive Collisions 0 Scratch Pad OxFFFF F030 0078 Ethernet Errors Others 36 DataLog gt OxFFFF F030 007C Smart Modules Present 0x0000 PID analog serial etc OxFFFF F030 011C PID Loops Supported 96 Events gt OxFFFF FO30 0148 Digital Modules Supported 16 Communications gt OxFFFF F030 0100 Arcnet Reconfigs Detected 3085 OxFFFF F030 0104 Arcnet Reconfigs Initiated by I 0 Unit 3085 Other OxFFFF F030 0120 Arcnet Transmit Attempts Since Powerup 16 OxFFFF F030 0128 Arcnet ACKs 0 Close Help 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 Analyze Communication Packets tf it appears that you have network problems you can use a utility program such as WireShark www wireshark org to log and analyze network communication packets Have Your Network Certified tf you suspect network problems you may need to have your network professionally certified Opto 22 does not offer network vali
7. Telefonaktiebolaget LM Ericsson All other brand or product names are trademarks or registered trademarks of their respective companies or organizations SNAP PAC Brains User s Guide Table of Contents Chapter Introduction sisisisicisiceisiecsiti titt dtr EE a TETIT EERENS 1 About SNAP PAC Brains secre eote 1 RUN ena eee SoftWare SUTE 2 Other Communication 2 3 Other Documents Yo May 3 4 Chapter 2 Installing a SNAP PAC Brain 5 5 ree E EEE EEO 5 Installing Hardware 6 Installing Modules on the 6 Removing AMOUS sessa veere verniou ta raet EEEE EE SEEE E E E 7 stalling the Brain ihe g 2 E EO EE 8 Vet S NE erme aa a a a a 8 Chapter 3 System Architecture ssssesesssssssosssossssoscesesee 9 Communication T E 9 Simultaneous Communication nies chy 10 Accessing SNAP PAC Brains Over the Internet annerri 10 Choosing Co
8. a bit in the Scratch Pad on or off e A specific string received by a serial module The brain can react automatically to an event in any or all of the following ways e Turning points on 4 channel digital modules on or off same or different brain Map Copying e Copying data from one memory map location to another same or different brain e Logging data e Turning a bit in the Scratch Pad on or off e Sending a stream packet an email message or an SMNP trap e Sending a string through a serial module to a serial device You can also use a timer to set up a delay between the event and the reaction You can limit access to SNAP PAC brains either by allowing access only from specific Security computers or other devices on the network IP filtering or by limiting access to specific protocols such as SNMP that are used with the brain port access Scratch Pad Areas The Scratch Pad is used primarily for peer to peer communication with other SNAP PAC brains and controllers on the network See the PAC Control User s Guide The Simple Network Management Protocol SNMP is used to communicate with an SNMP based enterprise management system such as Computer Associates SNMP Unicenter Hewlett Packard s OpenView or IBM s Tivoli These systems can manage analog digital or serial devices through a SNAP PAC brain just as they manage com puter equipment on the Ethernet network SNAP PAC brains have a substantial area avail
9. and analog ramping The SNAP PAC EB2 does not offer high speed digital functions or analog ramping For a complete list of brain features see page 18 I O Processing As an I O processor the SNAP PAC brain provides the local intelligence to independently handle functions such as latching counting thermocouple linearization watchdog timers and PID loop control These functions continue to work on the brain even if communication with the SNAP PAC controller is lost Each SNAP PAC brain mounts on a SNAP PAC rack with up to 4 8 12 or 16 SNAP I O modules Each module provides from 1 to 32 I O points depending on the module SNAP PAC brains support all the SNAP 1 0 analog digital serial and special purpose input and output modules available on the Opto 22 website These modules can all be mixed on the same mounting rack and placed in any position on the rack to accommodate the required mix of signals at any location For more information on mounting racks see Opto 22 form 1684 the SNAP PAC Racks Data Sheet For more information on I O modules visit our website at www opto22 com Communications In addition to I O processing SNAP PAC brains communicate over a standard 10 100 Mbps Ethernet network Each SNAP PAC brain is equipped with two switched Ethernet network interfaces Because these interfaces share a single IP address and act just like an Ethernet switch SNAP PAC brains can be SNAP PAC Brains User s Guide ABOU
10. and the LNK and STAT LEDs for the connected Ethernet interfaces are lit see LEDs and Network Interfaces on page 17 e Ifthe brain has been networked in a daisy chain configuration check to see if another brain in the chain has lost power Also make sure all network connections are correct See Using SNAP PAC Brain Network Interfaces on page 15 SNAP PAC Brains User s Guide CHAPTER 4 MAINTENANCE AND TROUBLESHOOTING e Make sure the brain s hold down screw has been tightened so that it is firmly attached to the rack Do not overtighten e Verify that you typed in the correct address for the brain Check the label on the side of the brain where the IP address should be written e Make sure the brain has been assigned a valid IP address and subnet mask SNAP PAC brains 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 e Make sure that no red LEDs on the brain are lit A red LED could indicate a voltage supply problem Each brain should have its own power supply The brain needs a minimum of 5 0 VDC measured at the rack e 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 e Make sure you have Administrator privileges on your computer an
11. 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 brains and controllers on the same network all at the same time and multiple PCs can communicate with one SNAP PAC device at the same time So for example a SNAP PAC brain 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 Accessing SNAP PAC Brains Over the Internet Since SNAP PAC brains 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 10 SNAP PAC Brains User s Guide CHAPTER 3 SYSTEM ARCHITECTURE Choosing Communication Methods How do you need to communicate with SNAP PAC brains 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 units P
12. brain with corporate email servers so employees can be emailed or paged if there s a problem on devices attached to the brain e SNMP Simple Network Management Protocol makes it possible to monitor devices attached to SNAP PAC brains just as you would any computer or server on the Ethernet 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 brain 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 brain whether to custom applications enterprise databases or any file system e Custom software applications are easy to develop using our OptoMMP Communication Toolkit with ActiveX components and C classes They use the OptoMMP protocol an IEEE 1394 based protocol to read and write to SNAP PAC brains For developers not using Microsoft Windows our OptoMMP protocol is open and documented Simultaneous Communication In addition to communicating using all the methods listed above each SNAP PAC brain can also communicate simultaneously using all of these 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
13. configuring O points see instructions the PAC Control Users Guide form 1700 If you are not using PAC Control follow configuration steps in the PAC Manager User s Guide To learn more about SNAP PAC brain capabilities and network options see Chapter 3 System Architecture If you are planning to install multiple brains in a daisy chain configuration see Using SNAP PAC Brain Network Interfaces on page 15 To use OLE for process control OPC with SNAP PAC brains purchase the OptoOPCServer and see Opto 22 form 1439 the OptoOPCServer User s Guide To communicate with SNAP PAC brains using Modbus TCP see form 1678 the Modbus TCP Protocol Guide To program your own applications to communicate with the SNAP PAC brain see Opto 22 form 1465 the OptoMMP Protocol Guide EJ SNAP PAC Brains User s Guide 3 System Architecture This chapter explains how to use SNAP PAC brains in an Ethernet network and how to communicate with them It includes information on Communication options See below System architecture See page 12 Networking See page 13 Specifications and feature comparison charts See page 17 Communication Options SNAP PAC brains communicate using TCP IP or UDP IP over a wired or wireless network Physical Layer SNAP PAC brains communicate over a 10 or 100 Mbps wired Ethernet link Transport Layer The key to the SNAP PAC brain s communication flexibility is the transport layer Internet Protocol IP
14. higher value Ifthe 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 brain stops trying and sends a timeout message If you are receiving frequent timeout messages from the brain you can change the TCP parameters in PAC Manager 1 Choose Start Programs Opto 22 PAC Project Software gt PAC Manager 2 In the PAC Manager main window click the Inspect icon Bl 3 Inthe IP Address field type the IP address of the brain Click Status Write Inspect 1 0 Unit Timeout 1000 ms Status Status Write area last read at 10 11 06 12 26 56 5 Apply IP Address 10 192 55 67 v Port 2001 r Status Write Status Read p Frrr rosos Always BootP DHCP On Powerup No 5 OxFFFF F038 0008 Degrees Degrees C Point Config F038 0010 Comm Watchdog Time msec 0 Disable Digital Bank OxFFFF F038 0014 TCP Minimum Retransmission Timeout msec 250 OxFFFF F038 0018 TCF Initial Retransmission Timeout msec 3000 Digital Point Analog Bank Analog Point High Density System Scratch Pad DataLog PID Events gt Communications gt Other F038 001C OxFFFF F038 0020 F038 004C OxFFFF F038 0050 OxFFFF F038 0054 OxFFFF FFFF F050 OxFFFF FFFF F058 TCP Retransmission Attempts TCP Idle Session Timeout msec 0 Disable Max Digital Scantime
15. ple in a heater or oven Digital output Supported by SNAP PAC EB1 only requires PAC Project Pro and a SNAP PAC controller Analog output Both SNAP PAC brains support analog TPO using a SNAP AOD 29 module On pulse and off pulse measure ment Digital input requires SNAP PAC EB1 PAC Project Pro and a SNAP PAC control ler A pulse is a brief on or off state usually repeated at a specific interval The brain can measure the first pulse that is the amount of time the input stays on or stays off Pulse and square wave generation Digital output requires SNAP PAC EB1 PAC Project Pro and a SNAP PAC control ler A pulse turns a digital output on or off briefly either once or for a specified num ber of times at a specified interval A digital square wave is a specific pattern of on and off states repeated continuously Digital and analog input and output A watchdog monitors communication with the PC or other host device If the host does not write data to the I O unit for the length of time set in the watchdog the I O unit automatically sets designated digital and analog output Watchdog points to the values you have determined If communication fails between the host and the brain controlling a process a watchdog makes sure the process is automatically brought to a safe state For example a valve could automatically close to avoid completely emptying a tank Scaling Analog input and output An
16. 65 or the OptoMMP memory mapped protocol SNAP PAC Brains User s Guide FOR HELP For Help If you have problems installing or using SNAP PAC brains 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 a m to 5 p m Pacific Time Product Support are grouped together and Fax 951 695 3017 answered in the order Email support opto22 com peeve 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 Brain and controller firmware version as applicable PC configuration type of processor speed memory and operating system A complete description of your hardware and operating systems including loader and firmware versions for the brain and date code available through PAC Manager see page 26 P addresses and net masks for devices on the system type of power supply third party devices installed for example barcode readers Specific error messages seen 4 SNAP PAC Brains User s Guide 2 Installing a SNAP PAC Brain If you already know how you will use the SNAP PAC brain and want to get it running quickly follow the sections in this chapter To learn about communica
17. AC Control I O points only or PAC Manager I O points and other functions OptoMMP Commu nication Toolkit or OptoMMP protocol If you are using PAC Control configure the system in PAC Control See the PAC Control User s Guide For the Communication Toolkit or OptoMMP protocol see OptoMMP Protocol Guide Monitor and control pro PAC Control flow PAC Manager Inspect window or OptoMMP Commu 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 cesses acquiredata chartlogie nication Toolkit or because both write to the brain s memory map For Com OptoMMP protocol munication Toolkit or OptoMMP protocol see OptoMMP Protocol Guide Give technicians an Opto 22 HMI with alarming and trend PAC Display See PAC Display User s Guide ing Communicate with Mod bus TCP hardware or soft Modbus TCP See Modbus TCP Protocol Guide ware Exchange point data with OptoOPCServer for Purchase OptoOPCServer or OptoDataLink separately third party software such as HMls and databases OPC OptoDataLink for databases or as part of PAC Project Professional See OptoOPC Server User s Guide and OptoDataLink User s Guide Send email or page someone Send SNMP trap Monitor devices through an enterprise management sys tem P
18. AC Control and PAC Manager for configuration OptoMMP Commu nication Toolkit or OptoMMP protocol If you are using PAC Control configure email using PAC Manager See the PAC Manager User s Guide For Communication Toolkit or OptoMMP see OptoMMP Protocol Guide Write your own software application to communicate with the system C or Active X OptoMMP Communi cation Toolkit and brain s memory map Opto 22 s OptoMMP protocol and brain s memory map See OptoMMP Protocol Guide SNAP PAC Brains User s Guide SYSTEM ARCHITECTURE System Architecture SNAP PAC brains can be used in two ways e For distributed intelligence in a larger control system based on a SNAP PAC controller running PAC Control e Asan independent I O processor The following diagrams illustrate these two uses SNAP PAC Brains as Part of a Distributed SNAP PAC System The following diagram shows only basic SNAP PAC System capabilities using free PAC Project Basic software For information on additional capabilities such as communication with OPC clients databases and third party systems see form 1696 the SNAP PAC System Data Book PC used to develop PAC Control strategy Distributed SNAP PAC brains and 1 0 PAC Control PC used for PAC Display HMI PAC Display Ethernet network iL 19 iL iL iL iL 19 iL SNAP PAC S series controller running PAC Control strategy 6
19. CP 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 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 5 Click the Apply button to write your changes to the brain 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 SNAP PAC Brains User s Guide Index A accessing brain over the Internet 10 ACT LED 17 analog point average filter weight 20 clamping 20 gain 20 maximum value 20 minimum value 20 offset 20 PID loop control 20 ramping 20 scaling 20 TPO 20 watchdog 20 average filter weight 20 B blink codes 25 brain comparing features 18 FTP 21 installing 8 networking 13 Scratch Pad 21 calibrating analog point 20 clamping analog output point 20 communicating with brain 9 choosing methods 11 pinging the brain 27 problems with 26 simultaneously 10 comparing brain feautures 18 computer connecting directly to brain 14 connecting to brain daisy chaining 15 16 network i
20. NAP PAC brains using Modbus TCP SNMP for network management FTP for the brain s built in file system SMTP email client and Opto 22 s own memory mapped OptoMMP protocol Communication with OPC 2 0 compliant clients is available through OptoOPCServer e For Modbus TCP see Opto 22 form 1678 the Modbus TCP Protocol Guide e For SNMP FTP and SMTP see form 1704 the PAC Manager User s Guide e Ifyou are not using PAC Project but want to develop custom software to communicate with the brain the OptoMMP developer toolkit is available for free on our website www opto22 com The OptoMMP Communication Toolkit includes ActiveX components and C classes so you can use programming tools such as Visual Basic or Visual C to communicate with the brain See form 1465 the OptoMMP Protocol Guide for more information e For OPC connectivity use OptoOPCServer available either as part of PAC Project Professional or for separate purchase See our website for more information SNAP PAC Brains User s Guide CHAPTER 1 INTRODUCTION About this Guide This guide shows you how to install and use SNAP PAC brains 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 brains The following sections are included in this user s guide
21. SNAP PAC BRAINS USER S GUIDE SNAP PAC EB1 SNAP PAC EB2 Form 1690 070504 May 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 Brains User s Guide Form 1690 070504 May 2007 Copyright 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 applies These products includ
22. T SNAP PAC BRAINS installed in a multi drop daisy chain configuration extending the control network without the expense of additional Ethernet network hardware SNAP PAC brains can also be installed in a star configuration using standard off the shelf Ethernet network components SNAP PAC brains support communication using multiple protocols running simultaneously over Ethernet Most customers use the PAC Project software suite for control monitoring and data acquisition At the same time you can communicate using other methods PAC Project Software Suite SNAP PAC brains are primarily designed for use with a SNAP PAC programmable automation controller The controller runs a control program called a strategy which you develop using PAC Project software The PAC Project software suite comes in two forms Basic and Professional e PAC Project Basic which is included in the purchase of a SNAP PAC controller consists of control programming human machine interface HMI creation and configuration software PAC Project Professional is available for purchase and adds OptoOPCServer for OPC communications OptoDataLink for database connectivity and additional features For more information about PAC Project see form 1699 the PAC Project Data Sheet available on our website www opto22 com Other Communication Methods In addition to using a SNAP PAC controller with PAC Project software you can communicate with S
23. able for file storage and data can be FTP Server easily moved to and from these files using FTP For more information on the file system see the PAC Manager User s Guide SNAP PAC Brains User s Guide SNAP PAC BRAIN COMPARISON CHART SNAP PAC Brains User s Guide 4 Maintenance and Troubleshooting Introduction This chapter includes the following maintenance and troubleshooting information Maintenance Backup Battery below Changing the Brain s IP Address page 24 Resetting the Brain page 24 Loading New Firmware page 24 Setting Time and Date page 25 Blink Codes page 25 Troubleshooting Getting Device and Firmware Information page 26 Communicating with the Brain page 26 Additional Troubleshooting Tools page 30 Maintaining the SNAP PAC Brain Backup Battery The real time clock on the SNAP PAC brain uses a CR2032 lithium backup battery which is user replaceable These batteries are readily available in retail stores SNAP PAC Brains User s Guide MAINTAINING THE SNAP PAC BRAIN Changing the Brain s IP Address If you know the SNAP PAC brain 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 brain If you still don t know the brain s IP address follow the steps in the next section to restore the brain to factory default settings and then assign an IP address as described in the PAC Manager U
24. alog input and output points can be scaled as needed For example you can scale a 5 V to 5 V input point to reflect 0 to 100 Minimum and maximum values Analog input Minimum and maximum values are sometimes called peaks and val leys You can read these values at any time for example to record minimum and maxi mum 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 Thermocouple lin earization Analog input The brain automatically converts the thermocouple junction s millivolt values into temperature values so you don t have to Choose the appropriate module and make sure you configure the point as the correct thermocouple type E K etc for your purpose Offset and gain Analog input Offset and gain calculations are used to calibrate analog points If a 50 mV to 50 mV input receives signals that are slightly off not exactly 50 mV at the low est point for example the offset and gain can be calculated so that values will appear accurately when read Analog output Clamping limits values that can be sent to analog output points so they do not go above or below a specific value For example if you are using a 0 10 Clamping VDC output module but the device attached to one of its points can only handle a max imum of 5 VDC you can set an upper c
25. d 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 brain BootP and FTP cannot function through a firewall in the PC Firewalls in a router are less likely to be a problem Pinging the Brain If you still cannot communicate with the brain after you have checked these items try to reach it using the PING protocol 1 Choose Start Programs Accessories and open a command prompt window 2 Atthe prompt type ping brain s IP address For example type ping 10 192 54 40 If the brain responds go to Accessing the Brain with PAC Manager on page 28 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 brain probably has an inappropriate IP address and subnet mask Make sure the IP address and subnet mask on the brain are compatible with those on the computer Follow the directions beginning on page 24 to check the IP address and subnet mask on the brain and change them if necessary If you see the message No response from host check the following e Are the computer and brain correctly connected Is the brain turned on e Are the IP address and subnet ma
26. dation 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 problems communicating with the SNAP PAC brain after your network is certified contact Opto 22 Product Support See page 4 Additional Troubleshooting Tools Making Sure the Brain is in Normal Mode If you are having trouble communicating with the brain 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 brain 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 brain restarts in fail safe bootloader mode simply cycle power to the device This action performs a simple restart and allows you to communicate with the brain For more information on using the RESET button see Resetting the Brain on page 24 SNAP PAC Brains User s Guide CHAPTER 4 MAINTENANCE AND TROUBLESHOOTING TCP Settings Retransmit timeout RTO refers to the length of time the brain waits while communicating before timing out The RTO is determined by the brain 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
27. duct 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 7 slow Ethernet switch failure Contact Product Support Ethernet loopback test fail Make sure an Ethernet cable is connecting the two 11 slow network interfaces If the error is repeated contact ure Product Support 13 slow Real time clock failure Contact Product Support 16 slow Serial flash failure Contact Product Support 20 slow Digital failure Contact Product Support 21 slow Bus failure Contact Product Support SNAP PAC Brains User s Guide TROUBLESHOOTING THE SNAP PAC BRAIN Troubleshooting the SNAP PAC Brain If you encounter a problem while installing or using the SNAP PAC brain check the information in this section If you need to contact Opto 22 Product Support see For Help on page 4 Getting Device and Firmware Information If you need to contact Opto 22 Product Support for assistance it is helpful to have device and firmware information at hand before you call us 1 Choose Start Programs Opto 22 PAC Project Software gt PAC Manager 2 In the PAC Manager main window click the Inspect button Ql 3 Inthe IP Address field type the IP address of the device Click Status Read 3 Inspect 1 0 Unit IP Address 10 192 50 31 Status Write Point Config Digital Bank D
28. e 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 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 Ericsson is a trademark of
29. g 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 the release latch and pull straight up on the module to remove it Continue with Installing the Brain on page 8 SNAP PAC Brains User s Guide WHAT S NEXT Installing the Brain 1 Remove the brain from its packaging 2 Turn off power to the rack assembly 3 Align the brain connector with the mating connector on the mounting rack 4 Seat the brain onto the connector and use the hold down screw to secure the brain in position Do not overtighten 5 Using Category 5 or superior solid unshielded twisted pair cable connect the brain in one of the following ways Recommended for initial configuration Connect to a PC directly using a standard Ethernet cable Connect to a standard 10BASE T or 100BASE TX Ethernet network that has a PC on the same subnet as the brain 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 6 Before turning on power to the rack follow instructions in Opto 22 form 1704 the PAC Manager User s Guide to assign an IP address to the brain This guide is in Adobe Acrobat PDF format on the CD that came with the brain and is also available from our website www opto22 com What s Next To start
30. hernet network you can use off the shelf Ethernet components to build one Since Ethernet and TCP IP are worldwide standards there are a number of commercially 14 SNAP PAC Brains User s Guide CHAPTER 3 SYSTEM ARCHITECTURE available resources for learning about building and maintaining such a network 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 Because SNAP PAC brains have two switched Ethernet network interfaces you can install them in a daisy chain configuration See the next section for more information Using SNAP PAC Brain Network Interfaces As illustrated conceptually at right SNAP PAC brains Ethernet 1 have two Ethernet network interfaces Ethernet 1 and Ethernet 2 are not redundant interfaces they are connected by an unmanaged switch Ethernet 2 Unmanaged switch Ethernet devices are normally networked in a standard f star configuration If you are using this standard configuration connect either Ethernet 1 or Ethernet 2 to the network The two interfaces share the same IP address and either one will send a BootP request As an option however the SNAP PAC brain s two switched Ethernet interfaces let you use a daisy chain configuration for distributed 1 0 connecting just one brain to the network and then connecting subsequent brains in a chain The primary adva
31. igital Point Analog Bank Analog Point High Density System gt Scratch Pad DataLog PID gt Events Communications gt Other Status Read OxFFFF F030 OxFFFF F030 OxFFFF F030 OxFFFF F030 OxFFFF F030 OxFFFF F030 OxFFFF F030 OxFFFF F030 OxFFFF F030 OxFFFF F030 OxFFFF F030 OxFFFF F030 Port 2001 0004 0008 0018 0000 oo1c o0a0 0080 0020 0080 0024 0025 0026 0028 002E 0034 0038 003C 0040 0048 004c Timeout 1000 ms Status Status Read area last read at 02 21 07 15 05 09 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 O Unit Hardware Revision Month I O Unit Hardware Revision Day I O Unit Hardware Revision Year Installed Ram MAC Address TCP IP Address TCP IP Subnet Mask TCP IP Default Gateway TCP IP Name Server Always BootP DHCP On Powerup Degrees F C 3 PUC Received 0 i 1 08 1 B8 0a 02 21 2007 14 08 12 0x00000076 SNAP PAC EB1 1 30 2007 16777216 00 A0 3D 00 F6 24 10 192 50 31 255 255 192 0 0 0 0 0 0 0 0 0 Off 0 c 0 Keep this window open on your screen when you call Product Support Communicating with the Brain If you attempt to connect to the brain using its IP address and you cannot first check the following e Make sure the brain has been turned on
32. k switch has power Switch LEDs indicate that the connection is up If SNAP PAC brains are daisy chained LNK LEDs for both of their Ethernet interfaces are lit Neither the PC nor the brain uses the switch s uplink port The two switched network interfaces on the brain are being used correctly and are not creating a loop anywhere in the network see Using SNAP PAC Brain Network Interfaces on page 15 The brain s LNK LED s are lit Check Ethernet Errors Next use PAC Manager to check Ethernet errors reported by the brain These errors indicate network problems You will need to know the brain s IP address 1 2 3 4 Choose Start Programs gt Opto 22 gt PAC Project Software gt PAC Manager In the PAC Manager main window click the Inspect icon R In the IP Address field type the IP address of the brain Click Status Read Scroll down until you see the items Ethernet Errors Late Collisions Ethernet Errors Excessive Collisions and Ethernet Errors Others SNAP PAC Brains User s Guide TROUBLESHOOTING THE SNAP PAC BRAIN 5 Inspect 1 0 Unit IP Address 10 192 50 31 v Port 2001 Timeout 1000 ms Status fStatus Read area last read at 02 21 07 15 16 09 Status Read Status Read RUE OxFFFF F030 0054 Comm Watchdog Time msec 0 A OxFFFF F038 0054 Scanner Flags 0x0000 Point Config OxFFFF F030 005C Digital Scan Cownter 1280823 Digital Bank OxFFFF F030 0060 Analog Scan Counter 1589870
33. lamp of 5 VDC for that point The values for upper and lower clamp are set in engineering units Analog output requires SNAP PAC EB1 PAC Project Pro and a SNAP PAC control Ramping ler 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 prob lems Instead you can gradually ramp the device up or down to the desired value PID loop control Analog points Proportional integral derivative PID loops are used to drive an input toward a particular value the setpoint and keep the input very close to that value by controlling an output PID loops are often used in temperature control Average filter weight Analog inputs A filter weight smooths analog input signals that are erratic or change suddenly See the PAC Manager User s Guide for more details SNAP PAC Brains User s Guide CHAPTER 3 SYSTEM ARCHITECTURE Events Timers Event Messages Email Data Log ging Data Mirror ing and Memory You can configure a SNAP PAC brain to recognize one or a combination of the following as an event e The state of a point on a 4 channel digital module on or off e A specific high or low value of an analog point in Engineering Units e Anumber on a digital counter or a high or low number on a quadrature counter e analog point value or a quadrature counter that is outside an allowable range e The state of
34. link codes 25 LED descriptions 17 network 29 Product Support 4 V valley 20 W watchdog definition 20 SNAP PAC Brains User s Guide SNAP PAC Brains User s Guide
35. mmunication Methods c casscdecceereacrsegevaderspereadesanevagnaaes 11 VSE AEE 12 SNAP PAC Brains as Part of a Distributed SNAP PAC 5 12 SNAP PAC Brain as an Independent I O Processor eee 13 SNAP PAC Brains User s Guide ee 3 Connecting the Brain Directly to a PC or Controller 0 2 0 ccc cece cece cece eee 4 Attaching the Brain to an Existing Ethernet Network 000 000 cece e eee 4 Using the Brain in an Independent Network 00 0 ccc eee 4 Using SNAP PAC Brain Network Interfaces cseccsescevavaercabeceeenetsaeaersabneees 5 Correct Connections for Daisy Chaining 0 ccecseceeereeeeerseneeeeeeeneeees 6 correct Network 6 7 PPCM 3S ace A LEDs and NetWork Interfaces 7 SNAP PAC a a aaa 9 Chapter 4 Maintenance and Troubleshooting seeeeeeeees 23 23 Maintaining the memereeeortaouet 23 Backup 23 Changing the Brain s IP Address cccccesecccvn
36. msec Max Analog Scantime msec Scanner Flags Secondary IP Address Secondary Subnet Mask Operation Commands Send powerup clear Reset to defaults and Restart 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 Send Command 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 3 TCP Idle Session Timeout msec 240 000 SNAP PAC Brains User s Guide TROUBLESHOOTING THE SNAP PAC BRAIN Ifyou 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 brain to factory defaults see page 24 4 Change these four fields as necessary Minimum RTO sets an absolute minimum value for the RTO The device s 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 T
37. nt may return to off the on latch remains set as a record of the change until you clear it Similarly an off latch is set when the value of a digital point changes from on to off and it remains set until cleared Counters Digital input A counter keeps track of the number of times a digital input changes from off to on The count accumulates until it reaches the maximum count available in the brain or until you reset the counter to zero For example to count the number of wid gets produced per shift you would clear the counter at the start of each shift and read it at the end of each shift SNAP PAC EB1 brains offer high speed counting up to 20 KHz on 4 channel modules the speed of the counter depends upon the speed of the module used Both brains offer low speed counting about 50 Hz on high density modules counting is done in the module Quadrature counters Digital input A quadrature counter requires a SNAP quadrature input module which is attached to the encoder device The module sends a pulse to the brain upon each change in quadrature state and the brain counts the pulses and keeps track of the direction and rotation SNAP PAC Brains User s Guide SNAP PAC BRAIN COMPARISON CHART Time proportional output TPO 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 exam
38. ntage of daisy chaining is that you save the expense of network routers or switches The primary disadvantage is similar to that of a serial network if communication with one brain is lost communication to all brains beyond it on the daisy chain will also be lost IMPORTANT If you choose a daisy chain configuration make certain that the brains are connected correctly Incorrect connections can produce major problems on the network Make sure that daisy chain connections are made in a simple open ended chain as shown in the diagram on the following page SNAP PAC Brains User s Guide NETWORKING Correct Connections for Daisy Chaining Connection from network G D controller or PC to brain D Leave the 2nd Daisy chain connections interface on the last 5 brain unconnected Ssi t 8 9 eal g E t 4 n LELLI au ee NOTE Connection from aPC does not require a crossover cable Never connect SNAP PAC brains in a loop or ring For example do not connect both ends of the chain to the same switch nor to different switches on the same network As a rule do not connect the second Ethernet interface on the last brain in the chain to any other device NOTE There is one exception to this rule you can connect the network in a loop if at least one switch in the loop supports STP RSTP Spanning Tree Protocol Rapid Spanning Tree Protocol and has that feature enabled Inco
39. nterfaces 15 troubleshooting 26 counter description 19 D daisy chain 15 16 data logging 21 data mirroring 21 default settings restoring 24 digital point counter 19 latching 19 quadrature counter 19 State 19 TPO 20 watchdog 20 direct connection 14 distributed system 12 E email 21 enterprise management system 21 Ethernet network accessing brain over the Internet 10 attaching brain to existing network 14 SNAP PAC Brains User s Guide certification 30 daisy chaining brains 15 errors 29 incorrect connections diagram 16 independent control network 14 interfaces 15 17 troubleshooting 29 event 21 event messages 21 F failsafe bootloader mode 24 30 features comparison of brain models 18 descriptions of 19 file system on brain 21 firmware loading 24 FTP 21 G gain definition 20 generating pulse 20 square wave 20 H hardware getting data about 26 help blink codes 25 LED descriptions 17 network problems 29 Product Support 4 high density digital counter 19 0 modules installing 6 removing 7 0 point features 19 installing brain on rack 8 I O modules 6 SNAP PAC Brains User s Guide mounting rack 6 quick start 5 Internet accessing brain over 10 IP filtering 21 L latch definition 19 LEDs blink codes 25 description 17 red 27 LNK LED 17 loop control on analog point 20 M maximum value 20 measuring pulses 20
40. o place in the row of connectors on the rack Each module connector has a number NOTE Any type of module can be placed in any position on the rack Check module data sheets for power requirements and any quantity limitations 1 Place the rack so that the module connector numbers are right side up with zero on the left Module Module connectors position zero Retention bar Brain connector Position the module over the module connector aligning the small slot at the base of the module with the retention bar on the rack 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 for removal To remove a module see page 7 Ea SNAP PAC Brains User s Guide 4 Removing a Module 1 CHAPTER 2 INSTALLING A SNAP PAC BRAIN Optional As shown in the photo at right use standard 4 40 x 1 2 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 Wiring diagrams are in the module s data sheet If the modules are held in place with screws remove them Holdin
41. rrect Network Connections Oy vovv vE Ethernet switch N 19 iD 19 iO 1 SNAP PAC Brains User s Guide CHAPTER 3 SYSTEM ARCHITECTURE Specifications Specifications Power Requirements 5 0 5 2 VDC at 750 mA maximum does not include module power requirements Memory 16 MB RAM Backup battery CR2032 Lithium user replaceable 10 year minimum life for real time clock backup Network Interfaces IEEE 802 3 network 10Base T and 100Base TX Automatic MDC MDI X crossover Ethernet crossover cable not required for direct connection to PC Two switched ports allowing multi drop daisy chain or standard star network configuration Maximum Ethernet Segment Length 100 meters with Category 5 or superior UTP For 100 Mbps at this distance use Category 5 or superior solid UTP Operating Tempera ture 0 to 60 C Storage Temperature 40 to 85 C Humidity 0 95 humidity non condensing LEDs and Network Interfaces Switched Ethernet network interfaces Brains can be networked in a daisy chain z configuration or in a standard star LNK configuration using either Ethernet interface Uz Both interfaces use the same IP address lt g ACT Activity on Ethernet 6 ak network OTE When using a daisy chain lt configuration be aware that if power to zZ zZ STAT Brain status rain is lost all brain
42. rsion 1 u date OxFFFF F030 51 Firmware Version 8 08 Analog Bank OxFFFF F030 00A0 Firmware Version Date 02 21 2007 data R OxFFFF F030 00B0 Firmware Version Time 14 08 12 Analog Point Revenant OxFFFF F030 0020 Unit Type ox00000076 OxFFFF F030 0080 Unit Description SNAP PAC EB1 OxFFFF F030 0024 1 0 Unit Hardware Revision Month a OxFFFF F030 0025 1 0 Unit Hardware Revision Day 30 Scratch Pad gt OxFFFF F030 0026 1 0 Unit Hardware Revision Year 2007 OxFFFF F030 0028 Installed Ran 16777216 System DataLog PID gt OxFFFF F030 002E MAC Address 00 A0 3D 00 F6 2A OxFFFF F030 0034 TCP IP Address 10 192 50 31 Events gt OXFFFF F030 0038 TCP IP Subnet Mask 255 255 192 0 OxFFFF F030 003C TCP IP Default Gateway Communications gt OxFFFF F030 0040 TCP IP Name Server Other gt OxFFFF F030 0048 Always BootP DHCP On Powerup OxFFFF F030 004C Degrees F C Close Help If information does not appear contact Product Support See page 4 Solving Network Problems If there are recurring problems in communicating with the brain check your network The cables routers 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 Ethernet networ
43. s beyond it on the 6 MS etwork will also lose communication M NS Reserved for future Unnamed usg Akso see LEDs 6 SNAP PAC Brains User s Guide SNAP PAC BRAIN COMPARISON CHART SNAP PAC Brain Comparison Chart For descriptions of features see page 19 The following table compares SNAP PAC brains with firmware 8 0 SNAP PAC Brains User s Guide Digital 4 32 channels 9 9 Analog 2 32 channels 9 9 modules supported Serial RS 232 RS 485 9 9 Special purpose motion control power moni toring Profibus Wiegand On off status 9 9 Input latching 9 9 Watchdog timer 9 9 High speed counting up to 20 kHz 9 Digital I O point features Quadrature counting On pulse and off pulse measurement 9 TPO time proportional output 9 Pulse generation N pulses continuous square 9 wave on pulse and off pulse Thermocouple linearization 32 bit floating point for linearized values Minimum maximum values 9 9 Offset and gain 9 9 Scaling 9 9 Analog point features Time proportional output 9 9 Output clamping 9 9 Filter weight 9 9 Watchdog timer 9 9 Ramping 9 Ethernet networking 9 9 Two switched Ethernet network interfaces one IP address 9 9 Maximum number of modules allowed per I O unit with largest rack e e Any mix of 16 digital 16 analog 8 serial or special p
44. secenneseseneteesnetsencesesenaes 24 E EEKE EEE 24 Loading New Firmware 24 25 BINK GIES eta ce who toe E OEA E E ARE 25 Troubleshooting the SNAP PAC Brain 26 Getting Device and Firmware Information 00 ccc cece ence cece eect eee e eee ees 26 Communicating with the Brain cent tenet nent eens 26 da 27 Accessing the Brain with PAC Manager 0 c0cc cece eect cnet eee ete seen ees 28 Solving Network Problems 29 Additional Troubleshooting TOOIS 05420ic lt eedaeurmenbadusadardaaummewbaeuinedideaunnduds 30 Making Sure the Brain is in Normal Mode nnana 30 E E T E 3 Index sands gues 33 SNAP PAC Brains User s Guide 1 Introduction About SNAP PAC Brains SNAP PAC brains are powerful and versatile I O and communications processors for your SNAP PAC System Designed primarily to work in distributed systems controlled by a SNAP PAC S series or R series controller SNAP PAC brains provide local intelligence that frees the controller for supervisory tasks Two SNAP PAC brains are available the SNAP PAC EB1 and the SNAP PAC EB2 They are identical in their functions and features except that the SNAP PAC EB1 provides high speed digital functions
45. ser s Guide Resetting the Brain 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 restart Press and hold the RESET button The brain restarts for less than 1 sec until the STAT Any files in RAM are erased If files LED turns off and then immedi have been stored to flash memory ately release the button they will not be erased OR Turn off power to the brain and then turn it on again OR Use PAC Manager to send the brain the Restart from Powerup command ref r faul e The brain restarts dar Press and hold the RESET bution Files in RAM and flash memor 9 for 1 or 2 seconds until the STAT y are erased LED turns solid green and then i immediately release the button address is reset to 0 0 0 0 and subnet mask to 255 255 255 0 CAUTION Ifyou hold down the RESET button longer than the time needed to restore the default settings the brain will restart in fail safe bootloader mode which is indicated by the STAT LED blinking green 7 times quickly 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 brain restarts in fail safe bootloader mode simply cycle power to the device This action performs the simple restart described above Loading New Firmware Each SNAP PAC brain contains firmware
46. sk on the brain compatible with those on the computer e Is the brain in reset mode Check for a blinking STAT LED STAT blink codes are shown on page 25 If you still cannot ping the brain contact Opto 22 Product Support See page 4 SNAP PAC Brains User s Guide TROUBLESHOOTING THE SNAP PAC BRAIN Accessing the Brain with PAC Manager Once you know you can ping the brain try to access it using PAC Manager You will need to know the brain s IP address 1 If PAC Manager is not already open choose Start gt Programs Opto 22 PAC Project PAC Manager The PAC Manager main window opens 3 PAC Manager SEES File Tools Yiew Help daa xaa Bl Bi 2 In the PAC Manager main window click the Inspect button Ql 3 Inthe IP Address field type the IP address of the brain or choose it from the drop down list Click Status Read Information from the brain is displayed in the window SNAP PAC Brains User s Guide CHAPTER 4 MAINTENANCE AND TROUBLESHOOTING Z Inspect 1 0 Unit E Date and IP Address 10 192 50 31 Port 2001 Timeout 1000 ms Status Status Read area last read at 02 21 07 15 05 09 time data Status Read vvas last S DESCRIPTION Refresh read x OxFFFF F030 0004 Powerup Clear Flag PUC Needed PUC Received 0 Point Config OxFFFF F030 0008 Busy Flag igital i _DistalBark JoxrrFF F030 0018 Loader Version R1 0a Click to Digital Point OxFFFF F030 0000 Memory Map Ve
47. 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 brain following instructions in the PAC Manager User s Guide SNAP PAC Brains User s Guide CHAPTER 4 MAINTENANCE AND TROUBLESHOOTING Setting Time and Date The SNAP PAC brain s built in clock is set at the factory To change the time and date see instructions in the PAC Manager User s Guide Blink Codes The STAT LED on the top of a SNAP PAC brain uses blink codes to indicate status conditions See LEDs and Network Interfaces on page 17 for the location of the STAT LED The blink codes can be useful during operation and in troubleshooting If the STAT LED is on and remains green the brain has an IP address and is operating normally If the STAT LED blinks orange about four times a second the device is attempting to obtain an IP address by sending BootP requests If the STAT LED blinks green when the brain starts up it indicates the following 2 fast Normal the brain s firmware is starting up 5 fast Default settings have been successfully restored Entering fail safe bootloader mode See Resetting the 7 fast ae A Brain on page 24 for more information If the STAT LED is blinking red it indicates the following 4 slow valid MAG addres or Contact Pro
48. stands that each brain 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 Because the SNAP PAC brain has two switched Ethernet interfaces the brains can optionally be daisy chained together See Using SNAP PAC Brain Network Interfaces on page 15 If you need to isolate the control system data from the main network backbone you can use a router network switch or other gateway device You can also use a SNAP PAC controller which has two independent Ethernet network interfaces one interface can be connected to the enterprise network and the other used for the control system See Opto 22 form 1696 the SNAP PAC System Data Book for more information on network options Using the Brain in an Independent Network The third way SNAP PAC brains 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 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 brain must have a fixed IP address See the PAC Manager User s Guide for more information on IP addresses If you have no existing Et
49. tion options and networking start on page 9 Specifications are listed on page 17 What You Will Need You ll need the following items to install a SNAP PAC brain 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 brain For more information see Networking on page 13 Standard Ethernet cable for direct connection to the PC or an available connection to a standard 10BASE T or 1OOBASE TX Ethernet network SNAP PAC brain See page 18 for a chart comparing models SNAP PAC mounting rack and SNAP I O modules chosen for your application A SNAP PS5 or SNAP PS5U power supply or other 5 VDC power supply 0 0 1 VDC at 4 0 A applied to the rack Additional power may be required for SNAP I O modules depending on the number and type of modules used See the module data sheets on our website www opto22 com for information Installing Software In your CD ROM drive insert the CD that came with the brain 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 SNAP PAC Brains User s Guide INSTALLING HARDWARE Installing Hardware Assemble the rack and power supply according to the directions that came with them Installing Modules on the Rack Modules snap int
50. urpose PID logic on the brain 96 PID loops per brain 9 9 Modbus TCP 9 9 OPC driver support 9 9 OptoMMP memory mapped protocol 9 9 CHAPTER 3 SYSTEM ARCHITECTURE SNMP network management 9 9 FTP server file system 9 9 Email SMTP client 9 9 Scratch Pad area for peer to peer data bits floats integers and strings Digital events Alarm events Serial events and Timed events 9 9 Event messaging 9 9 UDP Streaming 9 9 Data logging in the brain 9 9 Security IP filtering port access 9 9 Realtime clock RTC 9 9 point data mirroring and memory map copying 9 9 1 Four channel digital modules only not available on high density digital modules 2 Requires a SNAP quadrature input module SNAP IDC5Q 3 Available when used with PAC Control Professional and a SNAP PAC controller 4 Requires a SNAP analog TPO module SNAP AOD 29 5 Currently not available on analog modules with more than 4 points Feature Descriptions See the feature table on page 18 For additional information including configuration see the PAC Manager User s Guide States Digital input and output A digital point is either on or off You can read the current state of a digital input or write an on off state to a digital output Latches Digital input When the value of a digital input point changes from off to on an on latch is automatically set While the value of the poi

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