IFM Ecomat 300 AC1355, Дополнительное руководство по устройству

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DP module 12: Extended command channel
Module 12, extended command 21dec (15hex):
read ID character string of an AS-i slave with the profile 7.4
9-25
9.14 Module 12, extended command 21
dec
(15
hex
):
read ID character string of an AS-i slave with the profile 7.4
Request of DP master
Bit
Word
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
1
R R
M
0/1
user ID command number = 15
hex
= 21
dec
2
R R R slave address R R
number of data bytes to be sent (here = 0)
3…18
not used
Legend → page 9-3
Example:
Word no. Value [hex] Description
1 0215
M=0: AS-i master 1
02 = user ID changes e.g. to 2
15 = command number 21
2 0300 03 = slave address 3(A)
Response from controllere (gateway) in the normal case
Bit
Word
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
1
E=0 B=0
M
0/1
reflected user ID reflected command number = 15
hex
2
TG R slave address 0 R R
number of data bytes to be received
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
17
reserved number of bytes received
18
reserved
Legend → page 9-3 and
TG toggle
length: 1 bit
permitted values: 0…1
value changes for each execution of the command
I/O direction of data for the devices with E type ≠ 3
length: 1 bit
permitted values: 0…1
0 = input
1 = output
2D double data transfer (redundancy) possible
length: 1 bit
permitted values: 0...1
0 = simple data transfer
1 = double data transfer
DT-Start start triple (information for the driver in the master)
DT-Count number of data triples (information for the driver in the master)