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Device manual AS-i M4 Gateway Profibus DPV1 (AC1375, AC1376)
2012-02-23
DP module 12: extended command channel
Commands in the extended command channel
238
11.3.10
Module 12, extended command 21 (15hex) – read 7.4 ID
string of an AS-i slave
5722
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
res. = 0
M
UID
command number = 21
dec
= 15
hex
2
res. = 0
ST
SLA
res. = 0
DL
3...18
not used
not used
Legend:
M
master no.
1 bit
0 = master 1
1 = master 2
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
DL
data length
5 bits
00…1F
hex
= 0…31
dec