IFM Ecomat 300 AC1355, Supplementary Device Manual

Page: 44 / 248

Set-up
Parameter setting of the Profibus host
7-20
Module 7: Command channel
Contents Command channel
→ page 8-1 , chapter DP module 7: Command channel
Length 4-byte consistent I/O (if not used: length = 0)
IMPORTANT:
For the query read only the required bytes. Unused bytes can
contain information of previous queries.
DP master request (4 bytes)
Bit
Byte
7 6 5 4 3 2 1 0
1
Command no.
2
MM X SSSSS
3
→ Tables starting on the next page
4
→
Tables starting on the next page
Calculation (MMXSSSSS):
(slave no.) + (master no. * 64
dec
) + (32
dec
, if B slave)
Controllere response (4 bytes, copy of the request)
Bit
Byte
7 6 5 4 3 2 1 0
1
D7 D6 Command no.
2
MM X SSSSS
3
→
Tables starting on the next page
4
→
Tables starting on the next page
Legend
D7 1 bit Error code 0 = no error occurred
1 = error occurred during command processing
D6 1 bit Command code 0 = command processed, buffer response valid
1 = command being processed, channel occupied
MM 2 bits Master no. 1...2
X 1 bit Slave type 0 = single or A slave
1 = B slave
SSSSS 5 bits Slave no. 1…31
dec