
http://www.omega.com e-mail: [email protected]’s GuideV R 2 0 0 / R S - 4 2 2 AC o m m u n i c a t i o n sI n s t r uction Manual
1 - 51 INSTALLING THE RS-422-A INTERFACENoteThe VR200 identifies an LF as the end of a text when receiving data (and sends a CR and LF as the terminat
1 - 61.5 Setting up the RS-422-A Communication InterfaceSETUP PROCEDURE:1 Unpack the VR200 recorder.2 While pressing the [] key, turn on the power to
2 - 12 RECEIVING FUNCTIONSChapter 2 RECEIVING FUNCTIONSThis chapter describes the program set commands and program control commands.Remember first to
2 - 22.2 Program Set Commands2.2.1 List of Program Set CommandsCommand TypeCommand FunctionSetSRSASNSWSDSYSZSPSKSTSLSFSGSCSMSHSXMDSets the input ran
2 - 32 RECEIVING FUNCTIONSInput range tableInput type Range Input Measurement range UnitDC Voltage20 mV 20 mV -20.00 to 20.00 mV mV60 mV 60 mV -60.00
2 - 4Example:SR01, SCL, VOLT, 20mV, 0, 1000, –1000, 1000, 1This example performs 0 to 10 mV input in channel 01 and is scaled from –100.0 to 100.0.Not
2 - 52 RECEIVING FUNCTIONS2.2.4 Setting the Unit (See Section 4.3 of the instruction manual for the VR200.)Format: SNp1, p2p1: Channel number (CC)p2:
2 - 62.2.8 Setting the Discrete (ZONE) Display(See Section 4.7.1 of the instruction manual for the VR200.)Format: SZp1, p2, p3p1: Channel number (CC)
2 - 72 RECEIVING FUNCTIONS2.2.12 Setting the Trip Level(See Section 4.7.5 of the instruction manual for the VR200.)Format: SLp1, p2, p3p1: Trip level
2 - 82.2.15 Setting the LCD Brightness and LCD Saver (LCD)(See Section 4.8 of the instruction manual for the VR200.)Format: SCp1, p2, p3p1: LCD brigh
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2 - 92 RECEIVING FUNCTIONSIf your model has -3M option, add the parameter p3.p3: Select the methods when saving measurement data to the floppy disk:AL
2 - 102.3 Program Control Commands2.3.1 List of Program Control CommandsCommand Type Command FunctionControlUDAKMIEVBOTSFMLFLOLIMEUMReturns the scre
2 - 112 RECEIVING FUNCTIONS2.3.7 Selecting the Output DataCommand FunctionTS0 Requests the measured values.TS1 Requests the parameter set values.TS2
2 - 122.3.12 Message Writing(for the VR 200 with style number 2 or higher)Command FunctionMEp1 Selects message number for which parameter set values t
2 - 132 RECEIVING FUNCTIONS2.4 Escape Sequence2.4 Escape SequenceThe following escape sequence commands are used to control the communications.2.4.1
2 - 14NoteA syntax error status is set when detected and reset when read by the host PC. On the contrary, the Memory End status stillreflects the cur
3 - 13 TRANSMITTING FUNCTIONS3.1 Introduction to Output Data FormatsChapter 3 TRANSMITTING FUNCTIONSThis chapter describes the different output form
3 - 23.2 Output Data FormatsThere are four formats in which data can be output.• TS0 + ESC T + FM0 (outputs measured values in ASCII mode)• TS0 + ESC
3 - 33 TRANSMITTING FUNCTIONS3.2.2 Output Format of Measured Values in Binary ModeWhen the TS0, ESC T and FM1 commands are received, the measured val
3 - 4(4) Measured data12345ByteA2A1A4A3Alarm status(for each level)A1 to An correspond to statuses for levels 1 to 4.Alarm statusDescription1234560 No
1PREFACEThis instruction manual describes the optional RS-422-A communication function forthe VR200 view recorder. For details concerning the operati
3 - 53 TRANSMITTING FUNCTIONS3.2.4 Output Format of Unit and Decimal Point InformationWhen receiving the TS2, ESC T, and LF commands, the VR200 recor
4 - 14 TIME CHARTChapter 4 TIME CHARTOne sampling(125 ms)When outputting binary data *A/D and primarycomputationESC T command from hostOutput of data*
5 - 15 INITIAL STATUSChapter 5 INITIAL STATUSThe initial status after power on is as follows.TS0 Output data type is the measured values.FM0, 01, 04 M
6 - 16 ERRORS DURING RS-422-A OUTPUT6.1 Preventing ErrorsChapter 6 ERRORS DURING RS-422-A OUTPUT6.1 Preventing ErrorsDo not send an FM or LF comma
6 - 26.2 How to Request Error Message OutputIf an error occurs when the host sends a setting or control command to a VR200recorder via the RS-422-A c
6 - 36 ERRORS DURING RS-422-A OUTPUT6.3 Timing of Resetting the Error Status6.3 Timing of Resetting the Error StatusWhen the VR200 receives an ESC S
7 - 17 PROGRAM EXAMPLESChapter 7 PROGRAM EXAMPLESExamples of application programs for an IBM PC are shown below.EnvironmentComputer used: IBM PCMode:
7 - 27.2 Program to Read Parameter Settings from Disk, Display Them onScreen, and Set up VR200100 ‘**************************************************
7 - 37 PROGRAM EXAMPLES7.3 Program to Read Unit and Decimal Point Information from VR200,Display It on Screen, and Write It to Disk100 ‘*************
7 - 47.4 Program to Output Measured Data (in ASCII Code) from VR200and Write to Disk100 ‘************************************************************
2CONTENTSPREFACEChapter 1 INSTALLING THE RS-422-A INTERFACE1.1 Interface Specifications ...
7 - 57 PROGRAM EXAMPLES7.5 Program to Output Measured Data (in Binary Code) from VR200and Write to Disk100 ‘*****************************************
App. - 1IM 4N1A1-11EAPPENDIXAppendix 1 ASCII Code TableAPPENDIXAppendix 1 ASCII Code TableNote• Select the degree symbol (°) of °C or °F as follows:
App. - 2IM 4N1A1-11EAppendix 2 File Naming RulesFile Name LengthData file: Up to seven alphanumeric charactersConfiguration (parameter settings) file
Index - 1INDEXINDEXAalarmsacknowledgment ... 2-10setting ...
Index - 2range settingsDELT... 2-2DI (Digital Input) ...
WARRANT Y/DISCLAIMEROMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for aperiod of 25 months f r om date
M3285/0299W h e r e Do I Find Everything I Need for P rocess Measurement and Control? OMEGA…Of Course!T E M P E R AT U R EThermocouple, RTD & Ther
3CONTENTSChapter 1 Chapter 2 Chapter 3 Chapter 4 Chapter 5 Chapter 6 Chapter 7INDEXAPPENDIX2.4 Escape Sequence...
1 - 11 INSTALLING THE RS-422-A INTERFACE1.1 Interface SpecificationsChapter 1 INSTALLING THE RS-422-AINTERFACEThe option /C3 provides the VR200 view
1 - 21.2 Interface Terminal1.2.1 Terminal AssignmentMEMORYSD A SD B SG G (signal ground)RD A RD B FG G (frame ground)Connect RD to TD of the host c
1 - 31 INSTALLING THE RS-422-A INTERFACE1.3 Communication WiringIf the host PC is equipped with an RS-422-A interface, the VR200 can be connecteddire
1 - 4If A < B, then signal = 1If A > B, then signal = 01.4.1 Start-stop (Asynchronous) CommunicationThe built-in RS-422-A interface communicate
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