VEGA VEGACOM 557 VEGA ASCII protocol - Manual (Page 44)

44 VEGACOM 557 VEGA ASCII
4.12 Error information from VEGACOM 557
If an enquiry of VEGACOM 557 was not understood correctly or the transmission of the en-
quiry was faulty, VEGACOM sends an error information.
Error text Meaning
"ERROR 5“ - Identifier not recognised
- Telegram incomplete
- VEGAMET address not valid
"ERROR 6“ Telegram cannot be evaluated
4.11 Enquiry for the software version
With this enquiry, the software version in VEGACOM 557 can be determined.
Answer of VEGACOM 557
Start character: S1 = 1 character "=“
Address: Addr = 1 character VEGACOM 557 address
Reserve: 2 characters here "00“
Answer: 17 characters text
Total length of the telegram: 23 characters
Telegram from processing system to VEGACOM 557
Identifier: 1 character, "v“ ("V“)
Request: 13 characters " READ VERSION“ (in front of READ and in front of VERSION with 1 blank character)
End identification: 1 character Chr (13) = CR = Carriage Return
Total length of the telegram: 18 characters
Data image in VEGACOM 557
Address End
Identifier VEGACOM Reserve Enquiry identification
No. of bytes 1 1 2 17 2
Range (ASCII) = 0..9 00 Answer text CRLF
Example = 2 00 VEGACOM557 V2.17 CRLF
Address End
Identifier VEGACOM Reserve Enquiry identification
No. of bytes 1 1 2 13 1
Range (ASCII) % 0..9 00 READ VERSION CR
Example % 2 00 READ VERSION CR