ifm
Device manual AS-i M4 Gateway Profibus DPV1 (AC1375, AC1376)
2012-02-23
Acyclic services for Profibus DPV1
Syntax of the acyclic services in the DPV1 command channel
321
12.7
Syntax of the acyclic services in the DPV1
command channel
5853
NOTE
►
If a command is to be executed, the value 65
hex
must be entered in the command request!
Changing the command number does not start the execution.
►
If a command is to be executed several times, the user ID must be changed accordingly, e.g. by
counting up.
►
Do not start the command until the preceding command has been completed.
(To do so, check the bits E + B in the 1st word.)
Request from fieldbus master to device
Bit
Offset
Word no.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
1
UID
command request = 65
hex
2
reserved for string transfers
command number
3...18
command
parameters
19
not used
not used
Legend:
UID
user ID
1 byte
00…FF
hex
= 0…255
dec
Response from device to fieldbus master
Bit
Offset
Word no.
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
1
reflected user ID
Command status (
→
page
2
reserved for string transfers
reflected command number
3...18
command
data
19
not changed
not changed
