ifm
Device manual AS-i M4 Gateway Profibus DPV1 (AC1375, AC1376)
2012-02-23
DP module 7 – command channel
Commands in DP module 7
192
10.1.12
Module 7, command 13 (0Dhex) – Read telegram error
counter
5646
Provides the number of errors during the exchange of data between the slave and the master since
power on or reset.
Request from fieldbus master to device
Bit
Byte no.
7
6
5
4
3
2
1
0
1
0
0
13
dec
= 0D
hex
2
MM
ST
SLA
3
not
used
4
not
used
Calculation of the byte "slave address" = (slave no.) + (master no. * 64
dec
) + (32
dec
, if B slave)
Legend:
MM
master no.
2 bits
01
bin
= 1
dec
= master 1
10
bin
= 2
dec
= master 2
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
Bit
Byte no.
7
6
5
4
3
2
1
0
1
0
0
reflected command number
2
copy of the request
3
error counter high byte
4
error counter low byte
