IFM Ecomat 300 AC1355, Supplementary Device Manual

Page: 193 / 248

The DPV1 command channel
DPV1 command 36dec (24hex):
acyclic standard read call of an AS-i slave with CTT2 profile
(S-7.5.5, S-7.A.5 or S-B.A.5)
11-39
Response from controllere (DPV1 slave) in the normal case
Bit
Word
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
1
reflected user ID command status = 6F
hex
2
TG L32 reserved F=0 reflected command number = 24
hex
3
parameter byte 1 parameter byte 0
4…16
parameter bytes 2...27
17
parameter byte 29 parameter byte 28
18
parameter byte 31 or
number of bytes read
parameter byte 30
Legend → page 11-3
NOTE
The high byte in the 18th word contains the number of parameter bytes read as long as the number is
< 32 (L32 = 0).
If the length is 32 (= maximum possible length), the bit L32 is set and the high byte in the 18th word
contains the 32nd parameter byte.
Example:
Word no. Value [hex] Description
1 046F
04 = reflected user ID 4
6F = command status is "ready" (no fault)
2
0024
or
8024
L32=0
→
net length < 32
24 = reflected command number 36
the most significant bit TG changes after each execution
3 1234 1st and 2nd parameter byte of index 9 in slave 3(A)
4 5678 3rd and 4th parameter byte of index 9 in slave 3(A)
5…17 0000 invalid / not used
18 0400 04 = 4-byte parameter string was read