Vega VEGAMET 624 Supplementary Instructions Manual
Also see for VEGAMET 391: Operating instructionsOperating instructionsOperating instructionsOperating instructionsOperating instructions
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156 PC/DCS valuesRS232/Ethernet connection • VEGAMET 391/624/625, VEGASCAN 693, PLICSRADIO C6230325-EN-1307016 PC/DCS values6.1 General informationPC/DCS outputs are used as digital outputs for transmission of meas-ured value information. The data can be transmitted to a superordi-nate PC, DCS or processing system via the RS232/Ethernet interface.The values can be sent e.g. as e-mail or read out via Modbus TCP incase of an existing Ethernet interface. The HTML pages of the signalconditioning instrument also show the measured values of the PC/DCS outputs. The adjustment of the data format and the referencevalue is carried out with PACTware and the corresponding DTM. Inthe parameter adjustment page "PC/DCS" the reference value andthe data format are selected; in addition, the option "In case of error:transmit error code instead of measured value" can be activated.With the reference value you determine which measured value isused as input signal for the PC/DCS output. The following referencevalues are available depending on the instrument:• Sensor value• Percent• Lin. percent• Scaled• TotalizerWith "Data format", the format of the PC/DCS value is determined.Here you determine how many decimal positions will be transmitted.This setting is important, e.g. with Modbus-TCP (filing of the meas-ured value as 2 Byte short). The PC/DCS value is then transmitted inthe integer format, i.e. the value must be within the range of -32767and +32767.Example: The sensor value of a pressure transmitter should betransmitted as PC/DCS value. The meauring range of the sensor isbetween -0.5 bar and +0.5 bar, the value should be transmitted withtwo positions after the decimal point. The following settings mustbe carried out: The sensor value must be selected as "Basic meas.value" and the selection #.## as "Data format". With these settings,the sensor value -0.5 bar is transmitted as PC/DCS value -0.5 bar.If " In case of error: send error code instead of measured value " is ac-tivated, the number of the error code is sent instead of the measuredvalue. These numbers correspond to the numbers of the instrumentstatus.Example: With error E008, value 8 is transmitted instead of the meas-ured value.Reference valueData formatFault |
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