Note:
When transmitting the PC/DCS value in Modbus-TCP protocol
(measured value filing as 2 byte short), the decimal point is not
transmitted, the value -0,5 bar is transmitted as -50. If the data
format was selected in such a way that values outside the
value range can be caused, limitation to the highest value of
the value range is made.
Example: Percent was selected as "Reference value " and #.
### as "Data format ". With this setting, the value 100 % should
be transmitted as 100000 which is outside the valid range of
max. +32767. This means that a limit will be imposed and
32767 transmitted instead. To avoid this, "Data format " #.##
should be chosen so that the value 100 % is transmitted as
10000.
Note:
With the switching inputs of PLICSRADIO
®
C62 (measure-
ment loops 4 … 6) the value 0 (switch open) and 100 (switch
closed) are transmitted as measured values, the units are
deleted.
The switching conditions of the relay are transferred as bit
information.
The following equivalencies apply to the switching relays:
l 0 = Switching status Off
l 1 = Switching status On
The following equivalencies apply to the fail safe relay:
l 0 = Failure message Off, relay switching condition On
l 1 = Failure message Off, relay switching condition Off
The following chart shows the addressing of the temporary
memory via Modbus.
Register address in
Modicon
Temporary memory of VEGAMET/PLICSRA-
DIO (1 bit)
10001 Fail safe relay
10002 Relay 1
10003 Relay 2
10004 Relay 3
1.3 Filing of measured value as 4 Byte Float
The filing of measured values in the temporary memory is
Filing of the relay values
6 Modbus-TCP, VEGA ASCII protocol - VEGAMET 624/625, VEGASCAN 693, PLICSRADIO
Function as Modbus-TCP server
30768-EN-070730
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