User guide

25
2 ASCII protocol
Modbus-TCP, ASCII protocol • VEGAMET 391/624/625, VEGASCAN 693, PLICSRADIO C62
30768-EN-130701
=001# 000673#%
=002# 00824#kg
=003#-000673#m
2.9 Measured value enquiry with command $
$ individual enquiry
The PC/DCS value stated in the enquiry is delivered as reply to the
individual enquiry. The measured value is transmitted with 11 decimal
places as oating point and with unit.
Number of bytes Character
Identier 1 $
Begin 1 … 3 001 … 030 or 1 … 30
End identication 1 CR
•
Identier: "$" (1 character)
•
Start: No. of the requested PC/DCS output (1 … 3 characters)
•
End identication: Carriage Return CR (1 sign)
Total length of the telegram: 3 … 5 characters
Number of bytes Character
T1 1 =
DCS no. 3 001 … 030
T2 1 #
Value 11 -824.6
T3 1 #
Unit 0 … n xxx
End identication 1 CR
•
T1: "=" (1 character)
•
DCS no.: No. of the PC/DCS output as 3-digit decimal number
•
T2: "#" (1 character)
•
Value: Numerical value of the PC/DCS output or with interferred
measured value the error code "Exxx"
Formatting of the value:
Character Meaning
1 "- ": Minus with negative numbers
" ": Space with positive numbers
2 … 12 11-digit number with comma or error code
•
T3: "#" (1 character)
•
Unit: Unit as text (0 … n unit)
•
End identication: Carriage Return CR (1 sign)
Total length of the telegram: 18 characters+Unit character
Enquiry of the control
system
Reply from the signal
conditioning instrument