ifm
Device manual AS-i M4 Gateway Profibus DPV1 (AC1375, AC1376)
2012-02-23
DP module 7 – command channel
Commands in DP module 7
206
10.1.21
Module 7, command 63 (3Fhex) – No-operation command
without function
5675
Request from fieldbus master to device
Bit
Byte no.
7
6
5
4
3
2
1
0
1
0
0
63
dec
= 3F
hex
2
not
used
3
not
used
4
not
used
Response from device to fieldbus master
Bit
Byte no.
7
6
5
4
3
2
1
0
1
E
B
reflected command number
2
not
changed*)
3
not
changed*)
4
not
changed*)
Legend:
E
error bit
1 bit
0 = no error detected
1 = error when executing the command
B
busy
1 bit
0 = command processed, buffer response valid
1 = command in process, channel used
*)
IMPORTANT:
For the query read only the required bytes!
Unused bytes can contain information of previous queries.
