87415 Rate Monitor Display User`s Manual
Contents
1. nvnnnnnnrneneeeanaa 8 RS 232 Connectors ois ciii I eri ree wea aae ke ver Veg va Wed ER Mie S Haa AR Te 9 Wiring Diagram For An RS 232 Host Device To One Display 9 Guidelines For Wiring RS 232 Devices ccc cece cee ete e teen aeae 10 1 8 RS 422 Or RS 485 Communication To One Or More Displays 10 Chapter 2 Using The Simple Packet Protocol d 2 1 Simple Packet Communication Format K x K K K K e e 11 2 2 Simple Packet Commands nn neeennnnnnnnennn nunna n nnn 12 Simulate An Input 2 0 0 see ease 13 Display Data 2 es etre deii uid ere Se tom Ori ME tra ei ena 13 Fash Dala nad 6 ies bene eo de emer ga LL bone he ed imaam tem tA Rd E bb 13 Change Color For Tri color Display s nre 14 Activate Relay 7x uev eX eter Ere ete ek REI REF 14 2 3 Addressing Multiple Displays leen 15 Unit Address ida dv ls iesu she invaded ere ate t gui e Pru dus a BR M AS 15 2 4 Using Checksums And Command Acknowledgments 16 87 415 Users Manual 17 Chapter 3 Advanced Features Of the 87 Series Display 3 1 VDPA4 OpllOns uei Er pc ee ieee ob eI ae 4g 17 Display JuSUfICAtlOn 2 4 bris tie teadet da Ba RR KTZ ranar a ER URDU 17 Eeaditig Zeroes coz eI RUMOR EE a a AIT MIR ARMEN DERE etes e uda 17 Fixed Decimal Point After Digit2. I 17 Number of Display Digits ssssssssssesssesssss RR enn 17 Inp t Mode i PER RBTREVNER AN ILETIBG Rx RA MUEVE ETRRVUPTNN E LEURS S 17 InputActive Level sies uer mob aata er Edel pont eU ARD ddp Rug ak 18 Debounce Time o ice ip Were itte deal PRU m e PR ERR 18 Rate Monitor Settings voee ee Re RR e er a Era ERR RR RT 18 Scale Factor c dp EE PIE helita oe ded ml Ded 18 Trigger Value 6 0 05 mina mina eet eid Ve ARD eT ue enter vikat e kJ NEU WE Wehr 18 Relay Setup ai eec ECL MR aaa a DURUM EE PL ERR rre de EUER 18 Baud Rate sic an Z T 9 aR Ie a veneer lid ROB UIS EOS a Uer get re eU ees 18 Data IE A T set DELE 18 Termimatdk sii EE 18 Unit Addiess uses eodeni A eese Ape tuse cd one d ERE MERE RE 19 Member of Gro p s icc tex metere tede E TIR RR PE earth E Ye 19 CHECKSUM cete irt beni de qe Dept t eben ve ae cxt em arde kand 19 Command Acknowledgment s e sss ee 19 Output Transmission nnununenernananannee reana na rn 19 Appendix A Operating Specifications Luuuueeee 9 Appendix B Character Set Listing cece eee eee eee eee ee eeeees el Appendix C Display Dimensions eeeeeeeeeennnn 65 Notice Of Disclaimer While the information in this manual has been carefully reviewed for accuracy Vorne Industries Inc assumes no liability for any errors or omissions in the information Vorne Industries also reserves th
3. Vorne Industries 87 415 Rate Monitor Display User s Manual 1445 Industrial Drive Itasca IL 60143 1849 630 875 3600 Telefax 630 875 3609 Chapter 1 Setting Up Your Display For Operation j 1 1 Accessing Wiring Connections And Selection Switches 3 1 2 Operation a tama ta oto Me he EUN E a 3 1 3 Setting The DIP Switches For Your Application 4 Run and Program Modes v reneenernerneereaeeneaneea 4 DIP Switch or VDP4 Selection nnn 4 Unit TYPO core rid ala alla Re DR DE E n idatud alal a x Rx Rank aa 4 Inp t Hate cs soe rA DE p uples vestis ded ett edem REX vulp Siue dede N 5 Display cec ec nm n e Mad EDI he eee UE EE Ede 5 Update Time 7 Time to Zero cec ener N Ooi Te dR AT ene ve prada cera des qu nao 5 1 4 Connecting Power To The Display nennnnnnnunnnnna 6 1 5 Wiring and Specifications seeeeeeeeererr nnns 6 Beset Arina aa a Put lt oe Ma qos MER Rie Rg Kira Let QUU KAALMA Tip 6 Input 1 and MPU Z sir tatud e enr mr DR RR Ic pec am RUSO RUM AMET 6 Output Voltages Porr dei Anastasia aude aa dee hee ee RUP UAR S 7 MIINE MEE EE ND T MM 7 1 6 Basic Information About Serial Communication Ports 8 1 7 RS 232 Communication To A Single Display esee 8 Selecting RS 232 Communication
4. 3 1 VDP4 Options The following is a list of 87 415 options that can be programmed using VDP4 Display Justification Available selections are Left or Right Justify Leading Zeroes Available selections are Do Not Blank or Blank leading zeroes Fixed Decimal Point After Digit Available selections are None 1 2 3 4 5 6 7 or 8 Number of Display Digits Available selections are 2 3 4 6 or 8 Input Mode The function of Input 1 Input 2 and the reset input can be defined Available options include rate input and Hold 87 415 Users Manual 17 Input Active Level The input active level for each input can be set to active high or active low Debounce Time The debounce time of each input can be individually set The debounce time is used to filter out false inputs due to contact bounce from a relay or switch input Rate Monitor Settings The rate monitor can be adjusted to update in frequency or period mode Scale Factor A scale factor can be defined for each count input The scale factor setting determines the amount that each input event will increment or decrement the display value Trigger Value Two trigger values are available When the display value crosses a trigger value a number of operations can be simultaneously triggered Available operations are two different flash rates Relay activation Stop counting Reset to reload value or change display color tri color displays only Relay Setup
5. The left most conduit opening is provided for power wiring the right most for signal wiring It is not recommended to run power wiring and signal wiring in the same conduit 1 2 Operation The 87 415 Rate Monitor displays the input rate on a 2 to 8 digit display field Rate per second Rate per minute or Rate per hour can be displayed The 87 415 averages the input calculates the rate and updates the display The rate of display update is adjustable from 1 second up to 60 seconds Longer update times result in more stable display readings The scale factor for each input is set to 1 at the factory The scale factor can be modified in the field using 87 Express a Windows based Utility or with 87 Terminal a handheld terminal available from Vorne The display value is the product of the scale factor and the calculated rate If no inputs are received within a field selectable period of time the display will go to zero Input 2 selects whether the rate is displayed or the count is displayed input 2 active The count value is stored in memory in the event of power loss An RS232 serial port is provided standard with each display The serial port can be used for customizing the operation of the unit See chapter 3 for additional information on customization The serial port also allows remote user access to the following features Inputs can be simulated amp an optional relay output can be controlled with serial commands An optional RS 485 conve
6. Relay Sequence A is user definable as either a Delay On Relay or Cycle Relay The Delay On Relay selection allows adjustment of the delay and duration time These settings are adjustable from 1 to 25 5 seconds The Cycle Relay selection allows specifying the ON time 1 to 25 5 seconds OFF time 1 to 25 5 seconds and number of cycles adjustable from 1 to 255 times Baud Rate Available selections are 300 600 1200 2400 4800 9600 19200 or 57600 Data Bits Available selections are 7 or 8 Terminator The Terminator selection specifies which character ends the transmission Available selections are CR or lt LF gt 18 87 415 Users Manual Unit Address Unit Address allows you to select an individual unit address Individual unit addresses can range from 0 to 255 allowing up to 256 displays to be individually addressed in a network Member of Group s Member of Group s allows you to select any combination of up to eight display groups that the display can belong to A packet addressed to a specific group or combination of groups will only be acted on by displays belonging to the group s Available selections are 1 to 8 Checksum This is an optional part of the packet that can be used to provide an extra level of data validation If used the checksum immediately follows the Terminator character Command Acknowledgment Command acknowledgments are used to let the host device know if data received by the di
7. 97d 98d 99d 5 100d 101d 102d 103d 68h 69h 6Ah 6Bh 6Ch 6Dh 6Eh 6Fh 104d 105d 106d 107d osa f 109a f nal map 70h 71h 72h 73h 74h 75h 76h 77h 112d 113d maa 115d 116d 117d E 119d 78h 79h 7Ah 7Bh 7Ch 7Dh 7Eh 7Fh 120d 121d 122d 123d 124d 125d 126d 127d 87 415 Users Manual 21 Appendix C Display Dimensions The 87 Series display was designed to be suspended from a pair of chains Make sure that the supporting chain can support the weight of the display Failure to follow this warning could result in damage to property or personal injury kis 65 i b L Y e e A B C D 4 Display 3 Digit 12 75 8 40 1L75 5 70 4 Display 4 Digit 16 30 8 40 15 30 5 70 4 Display 6 Digit 23 40 8 40 2240 5 70 4 Display 8 Digit 30 50 8 40 29 50 5 70 4 Display 12 Digit 44 70 8 40 43 70 5 70 4 Display 16 Digit 58 90 8 40 57 90 5 70 4 Display 20 Digit 73 10 8 40 72 10 5 70 6 Display 2 Digit 12 90 10 40 11 90 7 70 6 Display 3 Digit 18 30 10 40 17300 7 70 6 Display 4 Digit 23 70 10 40 22 70 7 70 6 Display 6 Digit 34 50 10 40 33 50 7 70 6 Display 8 Digit 45 30 10 40 44 3000 7 70 8 Display 2 Digit 15 90 12 40 14 0 9 70 8 Display 3 Digit 22 80 12 40 21 80 0 70 8 Display 4 Digit 29 70 12 40 28 70 9 70 8 Display 6 Digit 43 50 12 40 42 50 9 70 8 Display 8 Digit 57 30 12 40 56 30
8. 2VDC output voltage rated at 100mA is provided for auxiliary use Wiring Input connections are made to the five pin INPUT terminal strip marked P2 Connect inputs to this terminal strip as shown below Pins 1 to 5 Input Terminal Strip Reset RST Input 1 IN 1 0000 00 02 Input 2 IN 2 4 12 VDC 1 2 3 4 5 Signal GROUND 0VDC RST IN1 IN2 12V OV RST IN1 IN2 12V OV RST IN1 IN2 12V OV 12 3 4 5 12 3 4 5 12 8 4 5 D OOOD QOOOO QOOOO n Input Device SINK Input SOURCE Input 87 415 Users Manual 1 6 Basic Information About Serial Communication Ports This section provides some basic background information regarding different types of serial communication ports Each 87 415 display contains an RS 232 port An RS 485 port which is also compatible with RS 422 communication is available via a plug in option board Note Only one of the two ports can be used at any given time to communicate with a host device RS 232 ports are the most common type of serial ports although they are more common in an office environment than an industrial environment This is because RS 232 can only be run for short distances under 50 feet and in environments where EMI electromagnetic interference is minimal Also one host RS 232 port is limited to directly communicating with one device RS 422 ports are very common in industrial environments They are well suited for di
9. 9 70 12 Display 2 Digit 22 80 16 40 21 80 13 70 12 Display 3 Digit 33 15 16 40 32 15 13 70 12 Display 4 Digit 43 50 16 40 42 50 13 70 12 Display 6 Digit 64 20 16 40 63 20 13 70 12 Display 8 Digit 84 90 16 40 83 90 13 70 All Dimensions in inches 22 87 415 Users Manual
10. Segment 45 01 For Green Displays multiply the current value in the table by 1 25 For Tri Color Displays multiply the current value in the table by 2 5 Temperature Range Humidity Operating 32 to 122 degrees F 0 to 50 degrees C 5 to 95 non condensing 20 87 415 Users Manual Appendix B Character Set Listing This table lists the full 87 415 character set in a standard ASCII format As a primarily numeric seven segment display many non numeric characters can be displayed in only a limited fashion The hex and decimal ASCII codes are shown for each character The upper and lower case alpha character sets are identical They are designed to be as readable as possible within the constraints of a seven segment display If a character is not listed it will be displayed as blank as will all characters 20h and below 20h 21h 22h l 23h 24h 25h 26h 27h 32d 33d 34d 35d 36d 37d 38d 39d 28h 29h 2Ah 2Bh 2Ch ODF 2Eh 2Fh 40d 41d 42d 43d 44d 45d 46d 47d o 30h 81h 32h 33h 34h 35h 36h 37h 48d 49d 50d 51d 52d 53d 54d 55d 38h 39h 3Ah 3Bh 3Ch 3Dh 5 3Eh 3Fh 56d 57d 58d 59d 60d 61d 62d 63d eZ 40h Li 4th 42h 43h 44h 45h 46h 47h 64d 65d 66d 67d C 68d 69d 70d 71d 48h 49h 4Ah 4Bh 4Ch 4Dh 4Eh 4Fh 72d 73d 74d 75d 76d 77d 78d f 1 79d 50h 51h 52h 53h 54h 55h 56h 57h 80d 81d 82d m 83d 84d 85d 86d l 87d 58h 59h 5Ah 5Bh l 5Ch 5Dh 5Eh 5Fh 88d 89d 90d 91d 92d 93d 94d 95d c 60h 61h 62h 63h 64h 65h 66h 67h 96d
11. al Note that the R must be upper case and must be followed by one character which determines what relay action will occur The available actions are Action ASCII Character Hex Decimal Representation Turn relay on 1 31 hex 49 decimal Turn relay off 0 30 hex 48 decimal Seguence A A 41 hex 65 decimal Sequence A is a user definable relay sequence e g cycle the relay 20 times with each cycle consisting of 1 0 second on and 2 0 seconds off which can be triggered with one command For more information about the user definable relay sequence please refer to Chapter 3 Advanced Features Of The 87 Series Display 14 87 415 Users Manual Turn the relay on lt SOH gt s R1 lt CR gt Turn the relay off lt SOH gt s RO lt CR gt Trigger Sequence A lt SOH gt s RA lt CR gt 2 3 Addressing Multiple Displays Using an RS 422 or RS 485 network described in the Add On Module Users Manual together with addressing allows a host computer or PLC to communicate with specific individual displays or groups of displays in a network Each display in the network may be assigned a unit address and a group address If you do not need to address individual displays or groups of displays skip this section Unit Address Individual unit addresses can range from 0 to 255 allowing up to 256 displays to be individually addressed in a network The factory default unit address is 0 If a packet is directed to a specific unit address only units set
12. e a selection with a longer time to zero The default scale factor setting for each input is 1 If the rate value exceeds the display size only the least significant digits of the rate will be displayed e g count 21059 unit is a 3 digit display actual displayed value will be 059 Input 2 selects whether the rate is displayed input 2 open or the count is displayed input 2 active The count value is stored in memory in the event of power loss rs 9 10 Update Time Timeto Zero 87 415 Users Manual 5 1 4 Connecting Power To The Display Power connections are made to the three pin POWER terminal strip marked P1 Connect power to this terminal strip as shown below 3 Pin POWER Terminal Strip P1 120 VAC Powered Units 12 VDC Powered Units 120 VAC Hot 12 VDC 2 J 2 120 VAC Neutral DC Ground A B C Earth Ground Earth Ground Proper grounding is an important aspect of power wiring both as a safety measure and for improved electrical noise immunity Always connect Earth Ground to the 87 415 display WARNING Terminal C Earth Ground must always be connected to a reliable low impedance earth ground This provides a safety ground to the enclosure as well as a return path for electrical noise The power requirements for all standard 87 415 display configurations are listed in Appendix A 1 5 Wiring and Specifications Reset The reset input has an internal 10K pull up resistor to 5
13. e right to make changes without further notice to any products described in this manual 2 87 415 Users Manual Chapter 1 Setting Up Your Display For Operation This chapter describes how to set up the display hardware for operation including setting the dip switches connecting power wiring the counter inputs and wiring to the serial communication port There are many references in this chapter to the term input device The input device is whatever device will be providing a input signal to the 87 415 display Some typical input devices are foot switches relay contacts 3 wire proximity sensors PLC outputs and photoelectric eyes 1 1 Accessing Wiring Connections And Selection Switches All external power and signal connections to the display are made to printed circuit board mounted terminal strips These terminal strips as well as a 10 position DIP switch can be accessed by removing the back panel user access plate WARNING SHOCK HAZARD Always completely disconnect power from the display before opening the user access plate Do not reapply power to the display until the access plate has been reinstalled and securely closed There are two 7 8 conduit openings on the back panel of the display provided for bringing external wiring into the display enclosure If these conduit openings will not be used for wiring these openings can be filled with plastic plugs Caplugs Part Number BP 7 8 which are provided with the display
14. elay The available commands are fully described in Section 2 2 Simple Packet Commands Data Any ASCII characters you wish to display refer to Appendix B for a full character set listing The control characters lt SOH gt CR and lt LF gt cannot be used in the Data part of the packet as they are reserved for marking the beginning and end of packets Terminator A special ASCII character which marks the end of the data and thus immediately follows it Note that the symbol CR represents the ASCII Carriage Return character 0D hex 13 decimal and the symbol lt LF gt represents the ASCII Line Feed character 0A hex 10 decimal In cases where the host device transmits a lt CR gt lt LF gt combination as the terminator select CR Checksum This is an optional part of the packet that can be used to provide an extra level of data validation If used the checksum immediately follows the Terminator character Please request the Advanced Applications Guide if you are interested in using a checksum 2 2 Simple Packet Commands The command portion of the packet can contain one and only one command string for the display Command strings can be used to Simulate inputs display data flash data on the display change display color on tri color displays or control the optional relay Each of these commands is fully described below To accomplish more than one command e g flash data on the display and turn the relay on you m
15. is meant for an individual address or a group address S Serial data for an individual address S Serial data for a group address If your application does not require addressing individual displays or groups of displays you should use the type s This will allow data that you send to be acted upon by every display that receives it as explained below Address Can range from 0 to 255 and is an optional part of the packet that specifies an actual unit or group address If no address is included in the packet the default address of 0 will be used Note that a transmitted group address of 0 is a broadcast to all units regardless of what the internal address of each display is set to Thus when no addressing is required you can skip the Address part of the packet and rely on the fact that a default address of O will automatically be substituted In this case the complete header before the data would be lt SOH gt s and the data will be acted on by all displays that receive it For more information about individual and group addressing see Section 2 3 Addressing Multiple Displays 87 415 Users Manual 11 The ASCII Colon character 3A hex 58 decimal must be included in every transmission and is used to separate the header part of the packet from the data Command Can contain one command string for the display Command strings can be used to display data simulate an input flash data on the display or control the optional r
16. l be ignored Settings DIP Switch Unit Type The unit type of your 87 series display determines how the unit will operate There are four unit types available Event Counter Rate Monitor Elapsed Timer and Production Monitor The functionality of DIP switches 5 to 10 is determined by this selection 3141 Unit Type 87 256 Event Counter 87 415 Rate Monitor 87 705 Elapsed Timer 87 805 Production Monitor 4 87 415 Users Manual Input Rate The input rate for Input 1 is field programmable to low or high speed by setting this DIP switch When using a input device such as a switch or a relay contact set the input rate to low speed This will prevent false inputs caused by contact bounce For input devices such as proximity sensors and photoelectric eyes set the input rate to high speed Shielded wire for the input is recommended when the unit is set to high speed but not required for low speed Input Rate High speed Display Rate The display rate is field programmable to Rate per Second Rate per minute or Rate per hour Le 7 Display Rate Update Time Time to Zero The update time of the display and the Time to zero the display can be adjusted using these DIP switches The Update Time is the sampling period before a display update occurs Time to Zero is the amount of time that the display will take to reset to zero if no inputs are received Applications where inputs are received at slow speeds should us
17. o successfully interface a host RS 422 or RS 485 port to one or more 87 415 displays please refer to the Add On module Users Manual Note that the 87 415 display requires an optional communications board for opto isolated RS 485 communications 10 87 415 Users Manual Chapter 2 Using The Simple Packet Protocol This chapter describes the communication protocol of Simple Packet This is for applications where you can control the data being transmitted to the display but where you would like to access advanced features These features include independently simulating inputs addressing multiple displays flashing the display or controlling an optional relay in the display The default communication settings of the 87 415 are 9600 Baud 8 data bits 1 stop bit no parity Unit address 0 Group address 0 and Carriage Return CR Line Terminator 2 1 Simple Packet Communication Format The format of Simple Packet communication is SOH Type Address Command Data Terminator Checksum SOH The symbol lt SOH gt represents the ASCII Start Of Header character 01 hex 1 decimal and must be the first character of every transmission Since the purpose of the lt SOH gt character is to mark the beginning of a new packet it cannot appear anywhere else within the transmission Type Can be one of two ASCII characters S or s and must be the second character of every transmission This character lets the display know if the serial data
18. ommunication The RS 232 port is the standard communication port available in a 87 415 8 87 415 Users Manual RS 232 Connectors The RS 232 port is available on pins 1 to 3 of the 3 pin communication port terminal strip marked P3 The RS 232 terminal strip is shown below 3 Pin COM PORT Terminal Strip P3 Pin Pins 1 to 3 RS 232 Port RS 232 Transmit Data TxD 7 92 Z RS 232 Receive Data RxD Communication GROUND 1 2 3 Many host devices use either DB25 or DB9 connectors for their RS 232 ports For your reference two common RS 232 DB interfaces are shown below They are the standard male DB25 interface and the standard male IBM AT style DB9 interface Standard Host Device RS 232 DB Connectors DB25 MALE DB9 MALE Data Carrier Detect DCD Signal Ground Data Set Ready DSR 4 L Datta Carrier Detect DCD Clear To Send CTS 4 r Receive Data RxD Request To Send RTS Transmit Data TxD Receive Data RxD Data Transmit Ready DTR Transmit Data TxD r Signal Ground ww Ring Indicator RI O o0000090000 04060 O cooooooooooo Clear To Send CTS Ring Indicator RI L Request To Send RTS Data Set Ready DSR Data Terminal Ready DTR Wiring Diagram Fo
19. played flashing Data sent to the unit using this command will remain on the display until an input is received or power loss 1234 lt SOH gt s F1234 lt CR gt 888 8 lt SOH gt s F888 8 lt CR gt 87 415 Users Manual 13 Change Color For Tri color Display s Some 87 series displays are available with a tri color display option With the tri color option each digit color can be individually set to red yellow or green The Color command string begins with the ASCII character C 43 hex 67 decimal Note that the C must be upper case The rest of the data consists of a string of upper case ASCII characters which represent the color each digit of the display should be set to starting with the most significant left most digit The available colors are Color ASCII Character Hex Decimal Representation Red R 52 hex 82 decimal Yellow Y 59 hex 89 decimal Green G 47 hex 71 decimal If the C command is sent with only one color character for example CR the entire display will be set to that color The Color command takes effect as soon as it is received All Yellow SOH s CY CR 2 Digits Red 2 Digits Green lt SOH gt s CRRGG lt CR gt Activate Relay An optional relay output board can be added to the 87 415 display for additional annunciation WARNING Use the relay for annunciator applications only Do not use it for control The Relay command string begins with the ASCII character R 52 hex 82 decim
20. r An RS 232 Host Device To One Display The only connections necessary for two way communication between a host device and an 87 415 display are the ones shown in the diagram below Please refer to the Guidelines For Wiring RS 232 Devices section below for important wiring recommendations For one way communication from the host to the display the transmit data TxD line from the display pin 1 does not need to be connected to the host device 87 415 Users Manual 9 N Receive Data RxD Transmit Data TxD 4 Transmit Data TxD Receive Data RxD 3 Signal GROUND Isolated GROUND HOST DEVICE 87 SERIES DISPLAY Guidelines For Wiring RS 232 Devices For best results when wiring RS 232 devices please follow these guidelines 1 Use a 50 foot maximum cable length 2 Use a baud rate of 19 200 or less 3 Use a shielded cable with the shield connected to Earth Ground only at the 87 415 display Belden 9842 is a recommended cable 4 Carefully check your equipment and cable to ensure that Earth Ground is not connected at both ends of the cable If there is a significant difference in Earth Ground potential between the two ends of the cable it could cause data transmission errors or even damage to the RS 232 communication ports 5 Keep the cable length as short as possible and do not run the RS 232 cable parallel to any power cables 1 8 RS 422 Or RS 485 Communication To One Or More Displays T
21. rovide a means of letting the host device know that the data was received with a proper checksum If you are interested in using checksums and or command acknowledgment to improve data transfer reliability please request the Advanced Applications Guide 16 87 415 Users Manual Chapter 3 Advanced Features Of the 87 Series Display The 87 415 has been designed in such a way that it can be customized to meet a users specific requirements The unit is shipped from the factory set to DIP switch settings The DIP switch settings allow the user to select the Unit type Input speed for input 1 and input 2 display rate update time and time to zero The DIP switch settings have been selected so that a majority of users can setup the display with minimal effort Additional settings such as right justified data leading zeroes blanked no fixed decimal point and a factor of 1 are programmed at the factory and are not DIP switch selectable Applications that do not fit the DIP switch settings can be accommodated by using VDP4 to customize the operation of the 87 415 display VDP4 is a Windows based utility that is available from Vorne To bypass the DIP switch settings DIP switch 2 should be set to VDP4 off Setting the unit to VDP4 settings allows the unit to operate with the settings that are stored in a EEPROM on the displays logic board For additional information on topics discussed in this chapter request the Advanced Applications Guide
22. rter increases the communications distance up to 4000 feet 87 415 Users Manual 3 1 3 Setting The DIP Switches For Your Application DIP switch changes are only acknowledged at power up Factory defaults are shown in gray Run and Program Modes For normal operation the Run Program switch should be set to Run off Setting the unit to Program mode allows the unit to be customized using VDP4 and to run one of two diagnostic routines If DIP switch 2 is off the display cycles thru the following display diagnostic a Error status Should show E0 E1 or E2 indicates a memory error b Unit Address Default value is 00 c Red segment test The unit will turn on 1 segment at a time A thru F and DP d Green segment test For a single color display a blank screen will be displayed e All segments ON f Unit type 0 87 415 g This is a separator between the Unit type and the Software version h Software version This number is displayed on two consecutive screens Ex 1 1 4 If DIP switch 2 is on the display runs a DIP switch diagnostic This diagnostic displays the HEX value of DIP switches 3 thru 10 switches 3 to 6 MSD switches 7 to 10 LSD DIP Switch or VDP4 Selection For normal operation the Settings DIP switch should be set to DIP switch on In program mode Switch 2 selects between Display test off and DIP switch test on For VDP4 customized units DIP switch 2 will be set to VDP4 off and switches 3 10 wil
23. splay can be acted upon i e the data is valid for the command transmitted and the command and data are appropriate for the particular display If checksums are being used command acknowledgments also provide a means of letting the host device know that the data was received with a proper checksum Output Transmission Output transmission data can be used to poll an auxiliary device for data or send the display value to a remote computer The format of the data to be transmitted and the transmit interval can be defined 87 415 Users Manual 19 Appendix A Operating Specifications LED Life 100 000 hours typical Peak Wavelength Red 660nm Yellow 592nm Green 568nm Count Input characteristics High Level Low Level Input loading Leakage current accepted Low Speed High Speed Memory Serial Input Optional Relay Output Power Supply 3 5 to 30 VDC 0 to 1 5 VDC 1 5mA to 10mA 5V 30V 500 uA 50 Hz 10 millisecond on off time 4000 Hz 120 microsecond on off time 100 000 Read Write cycles 100 year retention RS 232 RS 485 Optional Single Pole Double Throw Rated 120VAC 1A 120 VAC H 15 50 60 Hz 12 VDC 5 Power Requirements All power requirements in the following table are listed in VA Volt Amps Red Or Yellow Display Digit Type 9 5 4 6 8 Digit Digit Digit Digit Digit 4 Discrete Segment 15 4 Solid Segment 30 6 Discrete Segment 9 9 1325 16 6 23 3 30 8 Discrete
24. stances up to 4000 feet and have substantially superior EMI immunity characteristics Additionally one host RS 422 port can communicate with a minimum of 10 devices without repeating the signal RS 485 ports are basically an improved version of RS 422 and in most cases are completely compatible with RS 422 devices and vice versa In fact many newer products with built in RS 422 ports actually use driver circuits that meet the RS 485 specification 87 series displays fall into this class RS 485 offers better EMI immunity characteristics and improved drivers that have the ability to communicate with up to 32 devices without repeating the signal There is sometimes confusion regarding RS 485 because it has an additional ability to communicate in both directions over one pair of wires a feature not supported by RS 422 or by 87 series displays 20 mA current loop was commonly used for industrial applications in the past but is less common today To use a 20mA current loop serial port with an 87 415 display all that is required is an external 20 mA current loop to RS 422 converter Vorne can provide such a converter if your application requires it 1 7 RS 232 Communication To A Single Display This section provides the information necessary to successfully interface a host RS 232 port to one 87 415 display If you would like to interface a host RS 232 port to multiple 87 415 displays read this section as well as section 1 8 Selecting RS 232 C
25. to that address will respond to the data More than one display may use the same unit address Remember if the data in the packet is meant for a specific unit address the serial data type S must follow the lt SOH gt character in the transmission packet as shown in the examples below The following examples assume that Unit Address is set to 10 checksums are not being used and that Terminator has been selected as CR Also note that an upper case S follows the lt SOH gt indicating that the serial data is intended for an individual display address and the D command character is being used to display data To Show Only On Displays With A Unit Address Of 10 1234 lt SOH gt S10 D1234 lt CR gt 888 8 lt SOH gt S10 D888 8 lt CR gt 87 415 Users Manual 15 2 4 Using Checksums And Command Acknowledgments Using checksums and command acknowledgments can improve the reliability of data transfer between the host device and the display They are optional features of the simple packet protocol either or both can be used Checksums allow the display to check if data has become corrupted during transmission from the host device to the display Command acknowledgments are used to let the host device know if data received by the display can be acted upon i e the data is valid for the command transmitted and the command and data are appropriate for the particular display If checksums are being used command acknowledgments also p
26. ust send a separate packet for each command Remember that the control characters lt SOH gt CR and lt LF gt cannot be used anywhere in the data portion of the packet as they are reserved for marking the beginning and end of packets The following examples assume that addressing is not being used and that Terminator has been selected as CR Also note that the header of the packet lt SOH gt s has the effect of broadcasting to all displays overriding any group or individual address a display might be set to 12 87 415 Users Manual Simulate An Input The Input command string begins with the ASCII character I 49 hex 73 decimal Note that the I must be upper case The rest of the data consists of a ASCII character which represent the input to simulate The available inputs are Input ASCII Character Hex Decimal Representation Input 1 1 31 hex 49 decimal Input 2 2 32 hex 50 decimal Reset R 52 hex 82 decimal Display Data Data to be displayed is preceded by the ASCII character D 44 hex 68 decimal Note that the D must be upper case The data will be displayed in a fixed non flashing manner Data sent to the unit using this command will remain on the display until an input is received or power loss 1234 SOH s D1234 CR 888 8 lt SOH gt s D888 8 lt CR gt Flash Data Data to be displayed flashing is preceded by the ASCII character F 46 hex 70 decimal Note that the F must be upper case The data will be dis
27. volts Momentarily sinking this input to ground with a contact closure or open collector NPN transistor activates the reset function The Reset input is used for storing Peak and Valley values The Reset input is TTL or CMOS compatible with a minimum high of 3 5 VDC and a maximum low of 1 5 VDC The reset line is active on the negative going edge Input 1 and Input 2 Input 1 and Input 2 have an internal 3 3K resistor to either 5 volts or signal ground depending on the selection of the SINK SOURCE jumper The SINK SOURCE jumper J2 is located to the lower left of the Input Terminal strip Both inputs will be affected by the setting of this jumper The factory default setting is SINK SINK SOURCE Active state of input Connect input to ground with a Connect input to VDC with a contact closure or open collector contact closure or open collector NPN transistor PNP transistor Normal state of input Pulled to 5 VDC thru a 3 3K Pulled to Signal ground thru a 3 3K resistor resistor 6 87 415 Users Manual isti Input characteristics kii aigu High Level 3 5 to 30 VDC Circuitry Low Level 0 to 1 5 VDC mm 33K Input loading 1 5mA to 10mA 5V 30V Leakage current accepted 500 uA 39K der 9 5VDC Low Speed 50 Hz 10 millisecond on off time ig SINE High Speed 4000 Hz 120 microsecond on off Des time Input 2 33K gt Output Voltage A regulated 1
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