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
352
12.8.14
Acyclic command 31 (1Fhex) – execute the extended safety
monitor protocol in the Safety-at-Work monitor once
5880
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 = 1F
hex
= 31
dec
3
sub command
res. = 0
ST
SLA
4...17
sub command data
sub command data
18
field number
data length
19
not used
not used
Legend:
UID
user ID
5 bits
00…1F
hex
= 0…31
dec
(a change to the user ID starts the command call)
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
sub command
1 byte
00
hex
= executing the "extended safety monitor protocol" once in the
"Safety at Work" monitor with the slave address 30
dec
(1E
hex
)
field number
1 byte
???
data length
1 byte
???
