IFM Ecomat 300 AC1355, Supplementary Device Manual

Page: 177 / 248

The DPV1 command channel
DPV1 command 21dec (15hex):
read ID string of an AS-i slave with the profile S-7.4
11-23
11.12 DPV1 command 21
dec
(15
hex
):
read ID string of an AS-i slave with the profile S-7.4
Request of DPV1 master
Bit
Word
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
1
user ID command request = 65
hex
2
0 0 0 AS-i slave address command number = 15
hex
= 21
dec
3…19
ignored
Legend → page 11-3
Example:
Word no. Value [hex] Description
1 0265
02 = user ID changes e.g. to 2
65 = command request
2 0315
03 = slave address 3
15 = command number 21
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 S
AS-i slave address
F
reflected command number = 15
hex
3
I/O 2D DT-Start DT-Count Mux field E type
4
number of parameters to be read
EDT Read reserved Diag reserved
5
EDT Write
reserved number of parameters to be written
6
device-specific information manufacturer identification
7…16
device-specific information device-specific information
18
reserved number of bytes received
19
reserved
Legend → page 11-3 and
Mux field
Number of multiplexed data words
Length: 3 bits
Permitted values: 0...3
Description:
number = Mux field + 1
E type
Characterises the slave concerning functionality and data structure
Length: 5 bits
Permitted values: 0... 31
dec
Description:
0 = reserved
1 = transferred values are measured values
2 = transferred values are 16 digital bit values
3 = normal operation in 4-bit mode (4E/4A)
4...31
dec
= reserved