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GOSSEN METRAWATT GMBH 9
2.2 Control set
The R2600/01 uses control sets on the request side only. They serve to request all equipment data that cannot be requested via a short set because a
detailed specification is required for them.
Principal construction control set
Character No. Contents Meaning Remarks
1 68h Start character
2 3 and/or 6 Length Number of characters from equipment address to checksum exclusive
3 3 and/or 6 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) see 2.4.3
8 1 From channel For reasons of compatibility with multi-channel controllers these charac-
ters must be available, omitted for parameter index 30h ... 3Fh.
9 1 To channel
10 0 Receipt number
8 and/or 11
Checksum (PS)
1)
1) For the set types, the checksum is formed by bytewise summation without overflow summation over all characters from the equipment address to checksum exclusive.
9 and/or 12 16h End character