Vega Modbus-TCP, ASCII protocol Bedienungsanleitung PDF herunterladen (Seite 12)

2 ASCII protocol

Modbus-TCP, ASCII protocol • VEGAMET 391/624/625, VEGASCAN 693, PLICSRADIO C62

30768-EN-130701

•

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 5 … 6 -067.3

T3 1 %

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 text "FAU LT "

Formatting of the value:

Character Meaning

1 "- ": Minus with negative numbers

" ": Space with positive numbers

2 … 4 3-digit number

5 ".": Decimal point

6 1-digit number (after the decimal point)

•

T3: "%" (1 character)

•

End identication: Carriage Return CR (1 sign)

Total length of the telegram: 12 … 13 characters

Note:

The % sign is a separator, not the unit %

Enquiry:

%001

Answer:

=001# 067.3%

% Block enquiry

As answer on the block enquiry, all PC/DCS values assigned in the

instrument are delivered. The measured value is transmitted with

three positions in front of the decimal point and one position after the

decimal point without unit.

Number of bytes Character

Identier 1 %

End identication 1 CR

•

Identier: "%" (1 character)

Reply from the signal

conditioning instrument

Example:

Enquiry of the control

system

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 31 32

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