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GOSSEN METRAWATT GMBH 10
2.3 Long set
The R2600/01 uses long sets to transmit instructions and parameters to the equipment and to receive data from the equipment.
Principal construction long set
Character No. Contents Meaning Remark
1 68h Start character
2 Length Number of characters from equipment address to checksum
exclusive
3 Length (repeat)
4 68h Start character (repeat)
5 0 ... FAh, FFh Equipment address Addr and/or 255 (see 2.4.1)
6 Function field (FF) see 2.4.2.
7
Parameter index (PI)
1)
1) Omitted for reply cycle data and event data.
see 2.4.3.
8 1
From channel
1)
9
1
To channel
1)
Omitted for parameter index 30h ... 3Fh
10
0
Receipt number
1)
. . . n character data block see 2.4.4.
Length + 5
Checksum (PS)
2)
2) For the set types, the checksum is formed by bytewise summation without overflow summation over all characters from the equipment address to checksum exclusive.
Length + 6 16h End character