Hardware Manual COMBILOG 1020
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ResDataUnit:
Response-Data-Unit (length = 0 ... n byte):
The Response-Data-Unit identifies a data field in the response
telegram which contains the data for the calling communication
partner.
FCS:
Frame-Check-Sequence (length = 1 byte):
The Frame-Check-Sequence FCS identifies the check sum of the
telegram. In the PROFIBUS-protocol this is the sum of the ASCII-
values from DA to DataUnit
modulo
256: CheckSum_PROFIBUS
= [DA+SA+FC+DataUnit] mod 256. In the PROFIBUS-protocol
the value is stated as a hexadecimal value (
hex
00 .. FF).
ED:
End-Delimiter (length = 1 byte):
The End-Delimiter ED identifies the end of the telegrams. In the
PROFIBUS-protocol it has the value
hex
16.
SC:
Short-Acknowledgement-Frame (length = 1 byte):
The Short-Acknowledgement-Frame SC identifies a telegram that
can be sent back to the communication partner as an acknowl-
edgement. With SDA-requests it can be used as a positive re-
ceive acknowledgement. With SRD-requests it can be returned
as a negative acknowledgement.
Summary of Contents for COMBILOG 1020
Page 1: ...COMBILOG 1020 Datalogger Hardware Manual Version 3 09...
Page 2: ...Hardware Manual COMBILOG 1020 2 Issue 03 11 2005 Technical data are subject to change...
Page 4: ...Hardware Manual COMBILOG 1020 4...
Page 6: ...Hardware Manual COMBILOG 1020 6...
Page 12: ...Hardware Manual COMBILOG 1020 12...
Page 86: ...Hardware Manual COMBILOG 1020 86 Bild 8 1 Example Master Slave System...
Page 169: ...Hardware Manual COMBILOG 1020 169...
Page 170: ...Hardware Manual COMBILOG 1020 170...