Vega Modbus-TCP, ASCII protocol Bedienungsanleitung PDF herunterladen (Seite 26)

2 ASCII protocol

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

30768-EN-130701

Enquiry:

$001

Answer:

=001# 824.6 #kg

$ Block enquiry

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

to the block enquiry. The measured value is transmitted with 11 deci-

mal places as oating point and with 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 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: N*(18 characters+Unit character)

Enquiry:

Example:

Enquiry of the control

system

Reply from the signal

conditioning instrument

Example:

1 2 ... 21 22 23 24 25 26 27 28 29 30 31 32

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