AB105 - Cincinnati Test Systems
Contents
1. 10 Stabilize2 Timer 1 to 9999 x x 11 Test2 Timer 1 to 9999 x x x 12 Exhaust2 Timer 1 to 9999 x x x 13 Relax Timer 1 to 9999 x x x 14 Min Test Pressure 0000 to 99999 x xX xX 15 Max Test Pressure 0001 to 99999 xX xX xX 16 No Leak Loss 0000 to 99999 xX xX 17 Hi Limit Loss 0001 to 99999 xX xX 18 Max Cal Loss Flow 0001 to 99999 xX xX x 23 Min Test 2 Pressure 0000 to 99999 xX xX xX 24 Max Test2 Pressure 0001 to 99999 xX xX xX 25 No Leak Loss 2 0000 to 99999 xX xX 26 Hi Limit Loss 2 0001 to 99999 x xX 27 Max Cal Loss2 Flow2 0001 to 99999 xX xX xX 31 Reject Rate 001 to 9999 x x x 32 Orifice 001 to 9999 x x 22 Max Res Allowed 001 to 9999 Xx xX 21 Lo Limit Leak 01 to 999 x x 20 Zero Shift Percent 00 to 99 x x x 19 Zero Shift Quantity 5 to 999 x x x 33 Reject Rate 2 001 to 9999 x x x 34 Orifice 2 001 to 9999 x xX 30 Max Res Allowed 2 001 to 9999 xX xX 29 Lo Limit Leak 2 01 to 999 x x 28 Zero Shift Percent 2 00 to 99 x x x 35 Part Name up to 12 ASCII char x x x 36 Resolution 001 to 9999 xX xX 37 Resolution 2 001 to 9999 xX xX 38 Zero Shift Value 9999 to 99999 xX xX xX 39 Zero Shift Value 2 9999 to 99999 x xX xX 40 Low Limit Loss x 41 Low Limit Loss 2 x 42 Calibration Flow x 43 Calibration Flow 2 X 44 Target Pressure x 45 Target Pressure 2 x 46 Min Cal Flow 999 to 9999 xX 47 Min Cal Flow 2 999 to 9999 xX Timers values must be in 0 1 second increments Percentages can range from 0 to 99 in 1 increment2. Sentinel 121 B21 F21 1 j Serial Communications gt APPLICATION BULLETIN 1054 June 6 2002 gt PURPOSE This document provides the hardware and protocol information needed to successfully communicate with the Sentinel I 21 B 21 F21 instruments through the RS232 and or RS485 serial ports The RS232 port is designed to allow an IBM PC or compatible to communicate with one I 21 B 21 F 21 instrument The RS485 port is designed to allow an IBM PC or compatible to communicate with multiple I 21 B 21 F 21 s as would be required for a data collection system The serial communication ports allow access to all internal parameter locations allowing remote setup of the instrument Remote operation of the Sentinel I 21 B 21 F 21 instruments is performed through the dedicated I O The serial ports also have access to past test results Cincinnati Test Systems retains the right to change any of the characteristics of the Sentinel instruments including these serial communications features at any time If you intend to implement a computer based communications system and do not have experience writing programs that serially communicate with instrumentation you may want to consider purchasing technical assistance from CTS Please contact us at 513 367 6699 for more information RS232 HARDWARE The RS232 port is hardwired to be identical to most standard IBM PC compatible serial communications ports In most cases hookup to an IBM PC comp
3. ZS on Part Chg 0 no 1 yes x x x 23 Is Ist Test a Blockage Test 0 no 1 yes x 24 Is 2nd Test a Blockage Test 0 no 1 yes x 25 Is 2nd Test if 1st is Reject 0 no 1 yes X X X 26 Unclamp Part if Rejected 0 no 1 yes x x x 27 RS485 Address 1 32 x x x 28 Secure Cal Process 0 no 1 yes x x x 29 Secure Test Info 0 no 1 yes x x x 30 Secure Orifice Value 0 no 1 yes x x 31 Secure Counters 0 no 1 yes x xX x 32 Secure Self Test 0 no 1 yes Xx x xX 33 Secure Trans Zero Span 0 no 1 yes xX xX xX 34 Secure Runs until Cal Req d 0 no 1 yes x x xX Application Bulletin 105A 5 ID Description Valid Data Values PRIGI 221G2 F21 35 Date and Time See Command Disc x x x 36 Password 4 ASCII Digits x x x 37 Secure Chg part function O no 1 yes x x x 38 Exhaust Output operation O exhaust 1 Acc x x x 2 Rej 39 Software Version 4 ASCII Characters x x x 40 Hardware Type 1 121 2 F21 x x 41 lt Low Limit 1 O Reject 1 Accept x x 42 Between Limits 1 O Reject 1 Accept x x 43 gt High Limit 1 O Reject 1 Accept x x 44 lt Low Limit 2 O Reject 1 Accept x x 45 Between Limits 2 O Reject 1 Accept x x 46 gt High Limit 2 O Reject 1 Accept x x 47 Utility Input O Hold 1 Part Present X X 48 Hold Limit Outputs past eot O No 1 Yes x x 49 Utility Output O n 2 Test 1 In Cal x x 2 Gross Tmr 3 Test Tmr 50 Test 1 Style O Leak 1 Flow x 51 Test 2 Style O Leak 1 Flow x 52 Max Transducer Ze
4. be silent The hardwire interconnect on the six conductor RJ12 connector located on the bottom circuit board is described below PIN FUNCTION 1 transmit 2 ground 3 transmit 4 receive 5 ground 6 receive To create a complete system the master must be wired to the slaves through a network In the diagram below an IBM PC the master with an external RS232 to RS485 converter module is connected to a network The network has Y taps and a drop for each instrument The last Y has a terminator to minimize signal reflection A network similar to the one shown can be over 1000 feet long in normal factory settings In facilities with very electrically noisy equipment large welders induction heat treat equipment etc signal repeaters may be required This port operates using the following transmission format Ws 9600 Baud 2 8 bit data 3 No parity 4 1 stop bit 5 Xon Xoff handshaking supported Application Bulletin 105A 2 RS232 SOFTWARE A Writing to the Sentinel I 21 B 21 F 21 instruments To write information from a computer to the Sentinel instrument s RS232 port the computer must transmit a specially formatted data packet This communication format is B lt Command String gt lt Data ID Number gt lt Data Value gt C Where B is Control B 02H AC is Control C 03H lt gt and spaces are for description purposes only and are not transmitted is a required character Command String
5. atible requires only a Null Modem cable available from C T S and most computer stores In some cases however the PC manufacturer may not have adhered to the IBM standard and a custom cable may be required The hardwire interconnect on the front panel DB9 connector is described below PIN FUNCTION DCD RD SD DTR shield ground not a required hookup DSR RTS CTS NC OMINDMABRWNeH Cincinnati Test Systems Inc Member of TASI A Total Automated Solutions Inc Company 5555 Ory Fork Road Village of Cleves OH 45002 Tel 613 367 6699 Fax 519 367 5426 Website wwwcincinnati tesiicom E mail sales cincinnati test com This port operates using the following transmission format 1 9600 Baud 2 8 bit data 3 No parity 4 1 stop bit RS485 HARDWARE The RS485 port implemented in the Sentinel I 21 B 21 F 21 instrument conforms to the RS485 standards serial multidrop differential voltage To simplify customer written software this port supports half duplex communication only e g it permits communication in only one direction at any given moment As a result the network server typically an IBM PC will act as a master and each Sentinel instrument on the network will be slaves In this configuration the master will broadcast an address and message over the network and then wait for a response The Sentinel instrument with that address will respond by broadcasting the appropriate reply All other instruments will
6. ead the Total Runs Since New register from the Sentinel instrument BRDAT 8 C sent by the computer ABRDAT 8 21433 C response from the instrument Application Bulletin 105A 7 A similar strategy is used to read the test data except that Data ID is not required The reply format depends upon the model being used The read request format is ABRESP C sets the read pointer to the most recent data BRDTR C requests the test data being pointed at For versions S and F the instrument reply format is ABRDTR lt Part Number gt lt Loss gt lt Zshift gt lt Flow gt lt Acc Rej gt C For versions D and T the instrument reply format is BRDTR lt Part Number gt lt Loss gt lt Zshift gt lt Flow gt lt Acc Rej gt lt Loss2 gt lt Zshift2 gt lt Flow2 gt lt Acc Rej2 gt C The pointer is automatically advanced one location with each test data read RDTR Ina typical application the pointer would initially be reset RESP to the most recent data This would be followed by multiple reads of the test results RDTR The following program segments written in Basic are intended to demonstrate typical communications with the Sentinel instruments In all cases these fictitious programs reside inan IBM PC The first example writes the value 1 5 to the Part 3 Fill Timer location 100 OPEN COM2 9600 N 8 1 CS DS CD FOR RANDOM AS 1 200 PRINT 1 BWRP3 4 1 5x 700 CLOSE 1 T
7. his example will read part 5 s Leak Loss value 300 PRINT 1 BRDP5 17 400 t TIMER 500 WHILE TIMER t lt 06 600 WEND 700 A INPUT LOC 1 1 The delay allows time for the data to transfer from the instrument to the computers COM port The COM port is then read by the program The next example will read the six most recent test results from the instrument 800 PRINT 1 BRESPx 900 FORI 1TO6 1000 PRINT 1 BRDTRY 1100 t TIMER 1200 WHILE TIMER t lt 06 1300 WEND Application Bulletin 105A 8 1400 A INPUT LOC 1 1 1500 PRINT PART I RESULT A 1600 NEXTI Versions D and T will return a string that is typically longer than the IBM COM port buffer In this case multiple INPUT instructions or other techniques will be needed RS485 SOFTWARE Communications through the RS485 port is very similar to the RS232 port except that a node address is added to the message The communication format is A lt Node Address gt B lt Command and Data Parameters gt C Where Node Address is two ASCII digits max 1 to 31 The Commands and Data Parameters are identical to those used in the RS232 Software section above The Node Address must correspond to the address set in the instrument C G G G Rev 1 Application Bulletin 105A 9
8. is 6 ASCII characters maximum Data ID Number is 3 ASCII characters maximum Data Value is usually a floating point number but can also be an ASCII string Floating point numbers are 12 ASCII characters maximum digits 0 9 E and Maximum exponent is 38 Syntax is the same as Microsoft Basic Valid floating point numbers are 3456 34 4567 4 56789E 34 456780 1E23 Imbedded spaces within the floating point number are not allowed Not all messages will contain Data ID Numbers and or Data Values The valid Command Strings are as follows Command Description WRPI Write to Part 1 locations WRP2 Write to Part 2 locations WRP3 Write to Part 3 locations WRP4 Write to Part 4 locations WRP5 Write to Part 5 locations WRP6 Write to Part 6 locations WRP7 Write to Part 7 locations WRPS Write to SELF TEST locations WRMS Write to the MISC locations and counters The valid Data ID Numbers and Data Values for all PART WRP1 WRP7 and SELF TEST WRPS Commands are as follows G1 original version G2 Generation II ID Description Data Value Ranges 21Gl 21G2 F21 1 Clamp Timer 1 to 9999 X X X 2 Seal Timer 1 to 9999 x x x 3 Gross Timer 1 to 9999 xX xX xX 4 Fill Timer 1 to 9999 x x x 5 Stabilize Timer 1 to 9999 x x 6 Test Timer 1 to 9999 xX xX xX 7 Exhaust Timer 1 to 9999 x x x Application Bulletin 105A 3 ID Description Data Value Ranges I21G1 121G2 F21 8 Gross2 Timer 1 to 9999 x x x 9 Fill2 Timer 1 to 9999 x x x
9. ro Millivolts x 53 Transducer Span 0 1000ccm 1 6000ccm xX 2 Custom 54 Max Transducer 2 Zero Millivolts x 55 Transducer 2 Span 0 1000ccm 1 6000ccm x 2 Custom Commands associated with Parts WRP1 WRP7 and WRPS help transfer data associated with the individual parts being tested To run a leak or flow test all appropriate Part Data ID Numbers and Values must be transmitted The programmer does not have to transmit values for Parts that won t be used Commands associated with MISC help transfer data associated with the instrument configuration The instruments will use default values see user manual unless the programmer chooses to overwrite the location The following line will write the value 1 5 sec to the Part 3 Fill Timer location BWRP3 4 1 54C The following line will change the auto calibration method from its default value ABWRMS 21 24C B Reading from the Sentinel I 21 B 21 F 21 instrument To read information from the Sentinel instrument the computer must transmit a read request packet The instrument will respond with a specially formatted reply containing the requested information The read request format is B lt Command String gt lt Data ID Number gt C The Sentinel instrument reply format is Application Bulletin 105A 6 B lt Command String gt lt Data ID Number gt lt Data Value gt C The valid Command Strings for reading information are as follows Command De
10. s An x denotes which instrument has the feature Application Bulletin 105A 4 An asterisk denotes a value calculated by the instrument through calibration or zero shift procedures and therefore would not be transmitted by the programmer when uploading new part information This is read only data The valid Data ID Numbers and Data Values for the MISC Command WRMS are as follows ID Description Valid Data Values I21G1 21G2 F21 1 Trans Zero Range 0 to 9999 6 0 is typical x x x 2 Trans Span 0 to 9999 X X X 3 Trans 2 Zero Range 0 to 9999 6 0 is typical x x 4 Trans 2 Span 0 to 9999 X X 5 Runs until Cal Warning 1 999999 x x x 6 Runs until Cal Error 1 999999 x x x 7 Result Format 0 leak 1 press X X 2 leak amp press 8 Result Format 2 0 leak 1 press X X 2 leak amp press 9 Pneum Circuit 0 S 1 F 2 D 3 T X X X 10 Pressure Units 0 psi 1 kPa 2 bar x x xX 3 Mpa 4 GHG 5 mHg 6 GWC 7 mbr 8 atm 11 Leak Units 0 ccm 1 ccs 2 cis x x x 3 cch 12 Use Machine Control 0 NO 4 YNF 5 YCF x x x 6 YSF 7 YBF 13 Is 2 Inputs to Start Test 0 no 1 yes X X X 14 Anti Tie Down 0 no 1 yes X X X 15 Negative Leak Parts 0 accept 1 reject x 16 Set Current Part 0 6 parts 1 7 7 self test x x x 20 Number of Parts to Test 1 7 X X X 21 Auto Calib Method 0 auto orifice in manifold x X 1 manual orif in manifold 2 manual orif in part 22 Update
11. scription RDPI Read the Part 1 locations RDP2 Read the Part 2 locations RDP3 Read the Part 3 locations RDP4 Read the Part 4 locations RDP5 Read the Part 5 locations RDP6 Read the Part 6 locations RDP7 Read the Part 7 locations RDPS Read the SELF TEST locations RDMS Read the MISC locations and counters RDAT Read the counters RDTR Read the test data RESP Reset the test data pointer The valid Data ID Numbers for the PART SELF TEST and MISC Commands are the same as in the writing procedure shown above Valid Data ID Numbers for all COUNT RDAT Commands are as follows ID Description Data Value Ranges I21G1 21G2 F21 1 Leaks Counter 0 to 999999 x 2 Severe Leaks Counter 0 to 999999 x 3 Total Rejects Counter 0 to 999999 X X X 4 Total Accepts Counter 0 to 999999 x x x 5 Negative Leaks Counter 0 to 999999 x 6 Stops Errors Counter 0 to 999999 x x x 7 Runs Since Last Calibration 0 to 999999 X X X 8 Total Runs Since New 0 to 999999 x x x 9 lt Low Limit 1 0 to 999999 x x 10 Between Limits 1 0 to 999999 x x 11 gt High Limit 1 0 to 999999 x x 12 Severe Leak 1 0 to 999999 x x 13 lt Low Limit 2 0 to 999999 x x 14 Between Limits 2 0 to 999999 x x ID Description Data Value Ranges I21G1 21G2 F21 15 gt High Limit 2 0 to 999999 x x 16 Sever Leak 2 0 to 999999 x x The following lines will read the value from the Part 3 Fill Timer location ABRDP3 4 C sent by the computer ABRDP3 4 1 5 C response from the instrument The following line will r
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