VEGA VEGACOM 557 VEGA ASCII protocol - Manual (Page 36)

36 VEGACOM 557 VEGA ASCII
4.6 Enquiry as block with address and low resolution
Low resolution = switch 2.2 = OFF
This telegram reads in all DCS values of VEGACOM 557 with the assigned address, i.e. 255
are always transferred together. Each DCS value is provided with a number. Depending on
the position of switch 2.1, the DCS values are arranged differently. The assignment of the DCS
numbers to the VEGAMET addresses is stated in supplement A.
Answer of VEGACOM 557
Telegram from processing system to VEGACOM 557
255 repetitions
Identifier: 1 character, "%“
T1: 1 character ",“ (comma)
End identification: 1 character Chr (13) = CR = Carriage Return
Total length of the telegram: 4 characters
Data image in VEGACOM 557
End
Identifier Address T1 identification
No. of bytes 1 1 1 1
Range (ASCII) % 0..9 , CR
Example % 2 , CR
DCS DCS End
S1 Adr T1 no. S2 value2 identification
No. of bytes 1 1 1 3 1 5-6 2
Range (ASCII) = 0..9 , 001..255 #
DCS value
or fault %CR
Example = 2 , 001 # -067.3 %CR
Start character: S1 = 1 character "=“
Address : Addr = 1 character VEGACOM 557 address
Separating character: T1 = 1 character ",“ (comma)
Start character: S2 = 1 character "#“
Total length of the telegram: 255 * 14 or 15 characters
1 2 3 4 5 6
3 positions in front of the decimal point
1 decimal point
1 position after the decimal point
"-“ with negative values
" " with positive values
valid meas. value
1 2 3 4 5
‘FAULT’
Fault