ifm
Device manual AS-i M4 Gateway Profibus DPV1 (AC1375, AC1376)
2012-02-23
Acyclic services for Profibus DPV1
Acyclic command in the DPV1 command channel
325
12.8.2
Acyclic command 01 – change slave parameters
5863
Requirement:
the addressed AS-i master must be in the Protected mode.
Acyclic command 05 – set the operating mode of the AS-i master (
→
page
)
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 = 0
command number = 01
dec
= 01
hex
3
reserved = 0
res. = 0
ST
SLA
4
reserved = 0
reserved = 0
parameter value to be
written
5...19
not used
not used
Legend:
UID
user ID
1 byte
00…FF
hex
= 0…255
dec
ST
slave type
1 bit
0 = single slave or A slave
1 = B slave (= addition of 20
hex
or 32
dec
to the slave address)
SLA
slave address
5 bits
00…1F
hex
= 0…31
dec
Response from device to fieldbus master in the normal case
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
) = 6F
hex
2
reserved = 0
reflected command number
3
reserved = 0
reserved = 0
read back parameter value
4...19
not changed*)
not changed*)
Response from device to fieldbus master in case of a fault
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
) = 6B
hex
2
reserved = 0
reflected command number
3
reserved = 0
error code
4...19
not changed*)
not changed*)
*)
IMPORTANT:
For the query read only the required bytes!
Unused bytes can contain information of previous queries.
