GE Industrial Solutions 6KCV301PDP33 Profibus - DP Bus for AV300i - Manual (Page 15)

3
15
—————— BYTE ASSIGNMENT ——————
Profibus-DP
3.1 CONTROL BYTE SETTING
7 6 5 4 3 2 1 0
Service
Bit
Meaning
2 1 0
0 0 0 No request communications
0 0 1 Drive parameter reading
0 1 0 Drive parameter writing
1 1 0 DGF option parameter reading
1 1 1 DGF option parameter writing
Reserved
Handshake
Status
Bit
Meaning
7
0 Service carried out without errors
1 Error occurred
The status bit is only used by the Slave, therefore it has a meaning only during
the transmission from Slave to Master; in the transmisson from Master to Sla-
ve it has always to be set to 0.