Vega Modbus-TCP, ASCII protocol Bedienungsanleitung PDF herunterladen (Seite 17)

2 ASCII protocol

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

30768-EN-130701

•

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 … 7 6-digit number after the decimal point

•

T3: "%" (1 character)

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

Total length of the telegram: 14 characters

Note:

The % sign is a separator, not the unit %

Enquiry:

&001

Answer:

=001#-000673%

& Block enquiry

All assigned PC/DCS values in the instrument are delivered as reply

to the block enquiry. The measured value is transmitted with six deci-

mal places without decimal point and unit.

Number of bytes Character

Identier 1 &

End identication 1 CR

•

Identier: "&" (1 character)

•

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

Total length of the telegram: 2 characters

"N"-times repetition of the following telegram

(N=total number of assigned PC/DCS outputs)

Number of bytes Character

T1 1 =

DCS no. 3 001 … 030

T2 1 #

Value 7 -000673

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 "

Example:

Enquiry of the control

system

Reply from the signal

conditioning instrument

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 31 32

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