Serial Valve Interface Manual - Valco Instrument Instrument Company
Contents
1. 3jONVHO MOTISA ve 3SNVHO 31IHA 13101A 1101A MOTI3A NMOHS IL 9L 3ONVHO N33H9 qaad vt NMOH8 80700 Nid 40109 40109 02026091 009 380154 02926091 02026091 02926091 Ql Z L MNIBHS 1V3H 90 38 151 HV319 QI 91 L 1V3H 1 926091 1 AJISNY Nid 92 4334 NIVH1S NNOO 0 926091 1 0 926094 AJISNY d 18VO Nid 92 NNOO 1 026091 1 AJISNY 0c 431134 NIVHIS NNOO 020260914 0 02609 AJISNY 3 18VO Nid 02 NNOO 9c d M l 82 318VO Oc H Ml SOO TVA uunar 96 21 10 3onv5 02 NO88IH 318VO NOILdIHOS3Gd 6862 NO3 V alva NOILdINOS3G un SNOISIA3H L Warranty This Limited Warranty gives the Buyer specific legal rights and a Buyer may also have other rights that vary from state to state For a period of 365 calendar days from t2. 1 3 0000000000 BLACK OR GREEN GRAY OR ORANGE VIOLET OR RED BLUE OR BROWN WHITE OR YELLOW NOTE RIP 1 PIECE OF 20 CONDUCTOR RIBBON CABLE INTO 4 PIECES 5 WIRES EACH FOR BOTH COLOR SETS TERMINAL FEMALE MOLEX mona E THIS DOCUMENT AND THE INFORMATION WHICH IT CONTAINS SHALL NOT BE USED EXPLOITED OR SOLD AND SHALL NOT BE REVEALED OR DISCLOSED TO OTHERS WITHOUT THE EXPRESSED WRITTEN PERMISSION OF VALCO THIS DOCUMENT SHALL REMAIN THE PROPERTY OF VALCO AND SHALL BE RETURNED UPON DEMAND e umen OTHERWISE SPECIFIED Valco Instruments Co Inc FILE NAME DRAWN FRACTIONS DEC 23196 BRIAN BOGUE 10 06 95 a X4 I SUB DIR DESIGNED 1064 SVI DRAWING TE CABLE 23196 SVI TO 2POS MICRO 23196 4 Technical Drawings 16 Nouosrosavsn IAs uid ans SWWN 3713 gezez ON 3215 1 95 qawoisaa gezez HIN3 LIN3 OL IAS 09 IIN wat ewe 3OV3H31NI 96 21 10 as nasa auva D Lx 9I 9 ss3Nn SSONVYSIOL OO NA dO ALH3dOHd NIVIN3H TIVHS LNIWNIDOQ SIHL OO IVA NOISSIWH3d N3LLIHM Gassaudxa LNOHLIM SH3HLO OL 5 HO Q3 1V3 d LON TIVHS 0105 HO JASN LON TIVHS SNIVINOO HOIHM NOLLVAHHOHNI ONY LNIWNOOQ SIHL ANYWA Q3NH L33 38 TIVHS O t
3. for the output signal to be continous or to be de asserted following an actuation command When this timeout is enabled the signal is asserted for 150 milliseconds unless the valve is configured to require feedback In that case the signal will assert until the feedback is received to a maximum of four seconds After four seconds a positioning error will be indicated The SVI as received from the factory has all the outputs set for the timeout option If a valve output is to be used to control something other than a Valco actuator it may be desireable to disable the timeout function by arranging the jumpers as indicated in Drawing 22110 page 14 CAUTION All outputs from the SVI are internally refer enced to a common ground therefore all external loads should be electrically isolated from high voltage power sources for maximum personal safety and proper equip ment operation and protection Communicating with the SVI using Vcom Vcom is a simple serial port utility that can be used to send a sequence of text strings at timed intervals The times and associated text strings are stored in method mth files It is also possible to send individual strings entered using the keyboard and view any reply 1 Selecting serial port Open a serial port by selecting Utility gt Com Port from the menu The next time the program is run the selected serial port will be opened automatically 2 Creating a new file If you ar
4. Drawing 22110 Adaptor cable SVI to two pos microelectric actuator Drawing 23196 Adaptor cable SVI to multipos microelectric actuator Drawing 23236 Page 13 Page 14 Page 15 Page 16 Technical Drawings 13 Nouoaroudvsn 2 ON SNIMVHG 3215 aos aaN9 s3q 17022 1 IAS 30vddalNISOdz 29 nat ava 50000 ASSV 1872 E 09 siueuingsu IIN Ses SS31Nn S39NVH3T01 ANYWA TIVHS OO IVA dO ALH3dOHd TIVHS SIH L OOTVA NOISSIWH3d N31LIBM QassaudXa3 LNOHLIM SH3HLO OL 5 Q31V3A3H LON TIVHS TIOS HO aasn LON TIVHS SNIV LNOO LI HOIHM NOLLVINHOHNI SHL SIHL YOLOANNOO dO HV3H HOLO3NNOO Nid uunor S6100cL 9182 NO3 NOWWOO OL N33H9 43H v _ SNOISIA3H L L L L LL L O2 H Nel 4 0 6091 1 SNOT 0 9 L N 1202 609 318VO 1V l4 Nid 0 NIVHIS 02026091 1 S vd p 2615900151 HOV 02 2 12 90 20 SNId 3 1VN 190290601 1 7 1902 90 20 HO
5. computer or electronic stores carry this adapter The RS 232 cable with Male and Female DB 9 connectors must be wired straight through or pin to pin Pin 2 to Pin 2 Pin 3 to Pin 3 etc Only Pins 2 3 and 5 are used by the SVI they are functionally defined as TRANSMIT RECEIVE and GROUND respectively from the SVI perspective TWO POSITION ELECTRIC ACTUATORS INTERFACE CABLES SUPPLIED WITH MULTIPOSITION ELECTRIC ACTUATORS MULTIPOSITION 5 ELECTRIC ACTUATORS Sal HOST COMPUTER TWO POSITION INTERFACE CABLE RS 232 INTERFACE CABLE I Figure 2 SVI interconnection diagram Installation 4 Electric Actuator Connections Standard Two Position Electric Actuators To connect the SVI to a two position standard electric actuator use the two position interface cable Plug one end of this cable into the connector on the top of the SVI which is labeled V1 V2 V3 V4 The other end of the cable has four Molex connectors which are addressed by the SVI as V1 through V4 These Molex connectors plug directly into the remote switching cable on the back of Valco s standard two position electric actuators Any Valco two position standard electric actuator with a serial number above 19000 allows the option of positive dual position feedback to the SVI To enable this feature 1 Unplug the actuator Use a pair of pliers to compress and remove the cable strain relief devices from the back of the actuator cover Remove th
6. has an IDC 20 wire connector on one end with the other end unfinished to allow user selected termination To connect the multiposition actuator to the SVI install an IDC 20 wire connector on the unfinished end Plug one end of the cable into the multiposition electric actuator and the other end into the connector on the SVI labeled either V5 or V6 Two multiposition valves may be used simultaneously Installation 5 Two Position Air Actuator Connections The SVI can be used to control up to four Valco two position air actuated valves by connecting the SVI to the Valco Digital Valve Interface DVI The two position electric actuator cable can be adapted to control a DVI using this procedure 1 Use a wire cutter to remove the plastic Molex connector from the SVI connecting cable 2 With a wire stripper remove insulation from the red blue and black wires in each of the DVI ribbon cables and the corresponding SVI ribbon cable 3 Use solder or crimp on connectors to join the DVI ribbon cable to the SVI ribbon cable as shown in the table below Valve Signal SVI wire color DVI wire color Pos yellow black V1 Pos B green blue ground brown red Pos yellow black V2 Pos B green blue ground brown red Pos yellow black V3 Pos B green blue ground brown red Pos yellow black V4 Pos B green blue ground brown red SVI Control of Other Electrical Devices NOTE The follo
7. three groups commands with a command letter a valve number and a valve position three variables commands with a command letter and a valve number two variables and commands with fixed syntax no variables No spaces are allowed between any portion of a single command Command Letter Valve Number Position In these commands valve numbers 1 through 6 are used depending on the valve to be addressed For two position valves 1 through 4 the position variables are A and B L for Load and I for inject may be substituted for A and B but this creates the potential for confusion between Limit and Load Communicating with the SVI using Vcom 9 For multiposition valves 5 and 6 positioning is defined using the numbers 1 through 16 limited by the number of positions of the valve If an invalid valve position request is sent a response of BCMD appears indicating a command which cannot be executed Examples Command V1A Instructs the SVI to move valve 1 to Position A The first variable is the command letter which indicates that this is a Valve positioning command The second variable directs the command to valve 1 while the third instructs the SVI to move it to Position A This command would function equally well as V1L Command L512 Instructs the SVI to ignore any command which would move valve 5 to any position past position 12 The command letter indicates that this is a request for a position Limit
8. which is directed as the second variable indicates to valve 5 The third variable sets that limit at Position 12 Command V68 Instructs the SVI to move valve 6 to Position 8 The first variable indicates that this is another example of a Valve positioning command The second variable directs the command to valve 6 which is a multiposition valve This means that the pos itional variable must be numerical A or B will not work In this example Position 8 is selected A zero may precede a single digit positional command so this command would also work as V608 Command Letter Valve Number In these commands valve numbers 1 to 6 are again used depending on the valve to be addressed Examples Command S1 Requests the SVI to transmit to the host the current sensed status of valve 1 If the valve status cannot be read it will return an error status See page 10 Command F2 Requests the SVI to verify all attempts to position valve 2 and to provide serial port status feedback to the host Command N3 Requests the SVI to ignore the status feedback on valve 3 following any actuation command Command L5 Requests the SVI to transmit to the host the current limits set for valve 5 NOTE This command is only valid for the multiposition actuators on valves 5 and 6 Communicating with the SVI Using Vcom 10 Fixed Syntax Commands These commands are used only with the fixed syntax as they are listed below There are no
9. LO3NNOO X3 OM Nid 9 O N9 Loarni NYS 9 avo 13A v NOWWOO NH8 5 19 V1NOO dati 3408010 1 S N 9 Loarn 19 9 avo LHM NOWWOO 019 LOVINOO 5019 LOVLNOD O N9 Qarni NHO S avo 13A t NOWWOO NH8 3408010 LOVLNOO Q3H 3408010 19V1NOO NHO O N9 Loarni 199 avon LHM NOWWOO 9 5070 LOVLNOD OIAZ 3408010 LOYLNOO L Technical Drawings 14 1 us 01221 9 5 AWVN 379 ON H 012 1 16 v0 L0 SSH SONILLAS H3dlNflf IAS E L rX sjueuinisu IDIN 9c SS3Nn S39NVYH3101L ANYWA 38 TIVHS OSTA dO A1H3dOHd JHL NIVWSY TIVHS SIHL OOTVA JO NOISSIWH3d N3LLIHA Q3SS3atidX3 LNOHLIM SH3H LO OL 1390 19SIQ HO Q3 1V3A3H LON TIVHS TTOS HO Gallo 1dX3 aasn LON TIVHS SNIV LNOO LI HOIHM NOLLVIAHONI LN3IAQI2OQ SIHL suadwWnr ON zoo 2 PILLI O ko H 4 t09 FINGOW Eso nuHlSSVd oun oO WAR Vs NT zi E 5100 2 609 30 5574 SLOO Ir Qquvoa WIN
10. MEI Valco Instruments Co Inc Serial Valve Interface Instruction Manual North America South America and Australia Oceania contact Valco Instruments Co Inc tel 800 367 8424 fax 713 688 8106 valco Q vici com svi P65 Rev 7 08 Printed in USA Europe Asia and Africa contact VICI AG International tel 41 41 925 6200 fax 41 41 925 6201 info vici ch This page intentionally left blank for printing purposes Table of Contents IEEE BI epe 1 Installation 2 SVI 2 Interfacing the SVI to a PC 3 Electric Actuator Connections eene eene 4 Two Position Air Actuator Connections 5 SVI Control of Other Electrical Devices 5 Communicating with the SVI using VCom sese 7 Transmitted Command Types a 8 Transmitted Command Syntax essen 8 Multiple Device Mode 5 10 Responses Received from the SVI a 11 Technical Drawings u u una y QS nennen nennen nennen nnns 12 Mir E 17 This page intentionally left blank for printing purposes General Description The Valco Se
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12. able indicates that the valve will be turned to Position A This command would function equally well as 2V3L Command 051 Requests SVI 0 to give the current position status of valve 1 The first variable indicates that the device which has an ID of 0 is being addressed The S is the command letter for Status request and the 1 indicates that valve 1 is to be queried There is no positional information needed as this command is a query for current valve positional status Communicating with the SVI using Vcom 11 Responses Received from the SVI The SVI transmits responses to host commands or to perceived changes in valve status It also echoes commands which are not directed towards itself While the syntax of the response is identical to that of the transmitted command the content may differ This permits differentiation of critical responses from echoed commands The SVI responses are listed below RST EON EOF BCMD This response always follows an SVI reset The reset can be the result of a power failure or the receipt of the R command from the host This is the SVI s response to the identical command from the host It indicates that all commands to the SVI will generate a serial port response This is the SVI s response to the identical command from the host It indicates the SVI will generate a serial port response only to bad commands or positioning commands to valves configured for feedback which fail to i
13. ce Power supply RS 232 cable Two position interface cable 20 pin IDC connector Software CD The Serial Valve Interface can be easily installed by the user with the following items as supplied with the SVI One wall mount power supply One RS 232 cable to interface the SVI to any PC AT compatible serial communications port with a DB 9 connector One two position interface cable for connecting up to four two position electric actuators or Digital Valve Interfaces for use with air actuators Two 20 pin IDC connectors to adapt the external interface cables supplied with Valco multiposition electric actuators for use with the SVI One CD with Vcom software NOTE The jumpers referred to several times in the installation instructions are small plastic connectors on the circuit boards which can be easily pulled off and reinstalled on different pins SVISetup The SVI can operate in one of two different modes determined by the position of the jumper on connector CO14 on the SVI main board during power up In the Option 1 position the factory setting the Single Device Mode is selected in the Option 2 position the Multiple Device Mode is selected See Drawing 22110 page 14 for a complete list of the SVI jumper options and the factory settings Single Device Mode The single device mode which is the factory preset mode requires a dedicated Serial Communications Port on the host computer for ea
14. ch SVI Three optional baud rates can be selected by jumpers on the SVI main board with a factory setting of 9600 baud See Drawing 22110 page 14 Multiple Device Mode The multiple device mode allows up to eight SVIs to be daisy chained from a single serial communications port on the host computer Figure 1 In this mode the SVI has a fixed 9600 baud rate Connector CO11 on the SVI main board selects an ID of 0 to 7 which is used to distinguish each device Each SVI in the daisy chain must have a different ID The communications board connector CO14 jumper must be changed to the PASS THRU position for all SVIs on the daisy chain except for the last device which should be set to the END MODULE position to properly terminate the daisy chain See Drawing 22110 page 14 for a complete list of the SVI jumper options Installation 3 nal devices have been disconnected or are turned off CAUTION For proper startup make sure that all the jumper settings in the SVI are correct and that all exter before applying power to the SVI Figure 1 SVIs daisy chained to a single host computer Interfacing the SVI to a PC The SVI has two communication port connectors labeled COM 1 and COM 2 The RS 232 cable provided connects the COM 1 connector on the SVI to the serial port connector on the PC If the computer serial port connector is a DB 25 connector then a DB 25 FEMALE to DB 9 MALE adapter connector or cable is required Most
15. e creating a new method file select File gt New from the menu Enter the times and the command strings into the edit box in the method window as described in Editing a file below 3 Opening a file If you wish to run an existing method file open it my selecting File Open from the menu 4 Editing a file If the newly opened file needs to be edited click the Edit checkbox to enter the edit mode Entering a time Times are entered in the hour minute second format using any non numeric separator For example 20 20 seconds into the method run 2 10 2 minutes and 10 seconds into the run 1 30 4 1 hour 30 minutes and 4 seconds 01 30 04 1 hour 30 minutes and 4 seconds It is not necessary to enter the times in order They will be put in order when you exit the edit mode Entering a command The command is entered after the corresponding time separated from the time by a space or tab Commands are discussed in the next section For example 20 V1A Instructs the SVI to move valve 1 to Position A at 20 seconds into the method run 2 10 V1B Instructs the SVI to move valve 1 to Position B at 2 minutes and 10 seconds into the method run 1 30 4 V68 Instructs the SVI to move valve 6 to Position 8 at 1 hour 30 minutes and 4 seconds into the method run Communicating with the SVI using Vcom 8 Transmitted Command Types The following is a list of the command letters for the types of commands available f
16. em from the cables to allow the cables to travel freely through the holes in the cover 2 Remove the four phillips screws which secure the actuator cover One must be accessed through a hole in the black mounting bracket 3 Slide the cover back far enough to allow access to the small dipswitch on the board next to the connectors for the manual switching cable and change the position of the switch 4 Put the cover back in position replace the four screws and reinstall the strain relief devices In this mode the clear wire carries a logic high when the actuator is in Position A LOAD the white wire carries a high when it s in Position B INJECT Microelectric Two Position Actuators Microelectric two position actuators have a built in serial port and therefore do not require the SVI for serial port control However they can be connected to SVI if you are upgrading a system from standard electric actuators and don t want to change the existing SVI software Cable 1 23196 adapts any of the Molex connectors V1 through V4 on cable 1 22041 to the digital input port on a two position microelectric actuator If only two position microelectric actuators are to be used then optional cable 1 23783 which provides four direct connections to the SVI can be substituted for cable 1 22041 Standard Multiposition Electric Actuators Each standard multiposition electric actuator is shipped with an external interface cable This cable
17. hall return the goods prepaid and bear all the risks of loss until delivered to the factory If Seller returns the goods they will be delivered prepaid and Seller will bear all risks of loss until delivery to Buyer Buyer and Seller agree that this Limited Warranty shall be governed by and construed in accordance with the laws of the State of Texas The warranties contained in this agreement are in lieu of all other warranties expressed or implied including the warranties of merchantability and fitness for a particular purpose This Limited Warranty supercedes all prior proposals or representations oral or written and constitutes the entire understanding regarding the warranties made by Seller to Buyer This Limited Warranty may not be expanded or modified except in writing signed by the parties hereto
18. he date of shipment Valco Instruments Company Inc hereinafter Seller warrants the goods to be free from defect in material and workmanship to the original purchaser During the warranty period Seller agrees to repair or replace defective and or nonconforming goods or parts without charge for material or labor or at the Seller s option demand return of the goods and tender repayment of the price Buyer s exclusive remedy is repair or replacement of defective and nonconforming goods or at Seller s option the repayment of the price Seller excludes and disclaims any liability for lost profits personal injury interruption of service or for consequential incidental or special damages arising out of resuiting from or relating in any manner to these goods This Limited Warranty does not cover defects damage or nonconformity resulting from abuse misuse neglect lack of reasonable care modification or the attachment of improper devices to the goods This Limited Warranty does not cover expendable items This warranty is VOID when repairs are performed by a nonauthorized service center or representative For infor mation about authorized service centers or representatives write Customer Repairs Valco Instruments Company Inc P O Box 55603 Houston Texas 77255 or phone 713 688 9345 At Seller s option repairs or replace ments will be made on site or at the factory If repairs or replacements are to be made at the factory Buyer s
19. ndicate successful positioning This is the SVI s response to host commands which are directed to the device but cannot be executed An example might be a numeric positional command sent to a 2 position valve or a positional command to a multiposition valve which exceeds its set limit etc This letter represents a status response It may be preceded by the device ID depending on the Mode setting It in turn always precedes one of the following 1 a valve number and the sensed position 2 an error indication represented by the letter E which results from as invalid position sense or 3 a motion indication represented by the letter M which results from the sensing of the run line asserted on the multiposition valves This response is initiated by a status request or a valve positioning command if the echo is enabled from the host If feedback is not required the response following a valve command will reflect the attempted position rather than a sensed status This letter represents a limit command response and follows a limit request or a limit set command It may be preceded by a device ID but is always followed by a multiposition valve number 5 or 6 and the last limit position set for that valve Remember all the responses above may be preceded by the SVI ID number 12 Technical Drawings Cable assembly for two position actuators Drawing 22041 Jumper settings aiaiai eii ai a DANKA
20. or controlling the SVI Each letter represents a specific function the SVI will perform The commands are sub divided into two groups commands directed to specific valves and commands directed to the SVI Commands for Specific Valves V Indicates a Valve positional command It is used to direct the SVI to move a valve to an indicated position S Indicates a valve Status request It tells the SVI to transmit the current position of the indicated valve to the host L Indicates a valve command to Limit the number of positions to which the SVI will rotate a multiposition valve F Indicates a command to check valve status after a positioning command is completed and to provide Feedback as to the functional success or failure of the command N Indicates a command to igNore valve status after the execution of a valve positioning command Commands for the SVI R Represents a command to the SVI to Reset or perform a re initialization of the device It is equivalent to turning the power off and back on again E Represents an Echo control command to the SVI The echoing of position arrival closed loop feedback of all valves on an SVI can be deactivated or reactivated using this command Causes a command list to be echoed to the serial port Transmitted Command Syntax For the purpose of learning the transmitted command syntax it is easier to consider only SVIs in the single device mode It is also helpful to divide the commands into
21. rial Valve Interface SVI is a device that converts commands from a computer via a serial port into positional control for our two position and multiposition valve actuators Each SVI can control up to four air or electrically actuated two position valves and two electrically actuated multiposition valves The SVI has two serial port connections one male one female which allow daisy chaining of up to eight SVI s on a single serial communication port In addition to controlling valves the SVI can be used to control other devices which require logic level BCD or single line inputs The SVI is a packaged unit which includes an external 12 VDC 200 MA wall mount power supply There is no need to open the computer to connect the SVI because its DB 9 to DB 9 RS 232 cable connects to any available serial port on the back of the computer It also includes an interface cable for Valco two position actuators and two 20 pin IDC connectors for installation on the interface cable which comes as part of the multiposition standard electric actuator For air actuated valves optional interface cables are available for the Valco Digital Valve Interface DVI which converts electrical signals to pneumatic pulses Valco product number 1 22239 While the SVI can be operated by virtually any computer with an RS 232 port the software supplied with this package is written for PC s The SVI is supplied with Vcom software Installation Serial Valve Interfa
22. valve or position variables Command R Initiates a RESET procedure Once initiated the device requires up to four seconds before it responds with a reset acknowledgment Command EON Initiates ECHO ON After the receipt of this command the SVI will echo a serial port response to all valve positioning commands Command EOF Initiates ECHO OFF After the receipt of this command the SVI will only echo serial port response for valve functions which are configured for feedback and fail to complete a positional command Multiple Device Mode Commands All commands transmitted to any SVI set for the Multiple Device Mode must be prefaced by the ID of that SVI Otherwise the syntax conventions exactly parallel those illustrated in the previous examples The ID is se lected on CO11 as described in the section Multiple Device Mode on page 2 Examples Command 7V510 Instructs SVI 7 to turn valve 5 to Position 10 The first variable 7 is the SVI ID The second variable is the command letter which tells the SVI that this is a Valve positioning command The third character is the valve number telling the SVI that valve 5 is to be controlled The last two characters represent the position to which the valve will be turned Command 2V3A Instructs SVI 2 to turn valve 3 to Position A In this example the ID is 2 The command letter indicates that this is another Valve positioning command for valve number 3 The position vari
23. wing information is not intended for users unfamiliar with low power digital circuitry and proper isolation techniques The V1 PosA output on the SVI has special capabilities While all other two position outputs are transistor devices with 30 volt 50 milliamp open collector outputs the YELLOW wire pin 4 of the Molex connector on the V1 output is a relay contact closure to ground It can be used to drive loads of up to 48 volts at 1 2 amp Additionally the ground reference brown wire pin 3 of the Molex can be jumpered on CO12 on the SVI main board for a 12 VDC output which is sufficient to power small solenoids or other devices of up to 100 ma con tinuous current Or 200 ma on short duty cycle applications See Drawing 22110 page 14 for detailed information Installation 6 CAUTION When the SVI Valve 1 output is jumpered for 12 VDC output remove the plastic Molex connector from the SVI cable to insure that damage will not result from an accidental connection to a Valco two position electric actuator or DVI Before using the valve outputs to drive any load in excess of 12 VDC the jumper on connector CO13 must be changed to the OFF position This effectively removes the internal 12 volt diode clamp on the two position valve outputs and requires the installation of external reverse diode clamp ing on all inductive loads driven by these outputs The two position valve outputs have a jumper setable option which allows
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