No. 33: As-I Parameter Echolist - Siemens SIMATIC ET 200SP Manual

9.4.20

No. 33: AS-i Parameter Echolist

Meaning
This command returns the parameter echo values of all AS-i slaves. The parameter echo of
an AS-i slave originates in the last parameter call that was sent to this AS-i slave. The AS-i
slave can provide any parameter echo value. As a general rule, the returned parameter echo
value is not a "mirror image" of the parameter value that is sent by the master to the slave. If
necessary, refer to the documentation of the AS-i slave to ascertain whether the echo value
has a special meaning.
Structure of the job data in the send buffer
Table 9- 39 Structure of the job data in the send buffer
Byte
0
1
Structure of the reply data in the receive buffer f(ParEcho = parameter echo)
Table 9- 40 Structure of the job data in the receive buffer
Byte
Bit 7
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
AS-Interface master CM AS-i Master ST (3RK7137-6SA00-0BC1)
Manual, 07/2017, A5E02655262020A/RS-AD/004
Bit 6 Bit 5
Reserved
Par.Echo Slave 2
Par.Echo Slave 4
Par.Echo Slave 6
Par.Echo Slave 8
Par.Echo Slave 10
Par.Echo Slave 12
Par.Echo Slave 14
Par.Echo Slave 16
Par.Echo Slave 18
Par.Echo Slave 20
Par.Echo Slave 22
Par.Echo Slave 24
Par.Echo Slave 26
Par.Echo Slave 28
Par.Echo Slave 30
Reserved
Par.Echo Slave 2B
Par.Echo Slave 4B
Meaning
Command number: 33
H
00
H
Meaning
Bit 4 Bit 3
Using the command interface
9.4 Description of the AS-i commands
Bit 2 Bit 1
Par.Echo Slave 1
Par.Echo Slave 3
Par.Echo Slave 5
Par.Echo Slave 7
Par.Echo Slave 9
Par.Echo Slave 11
Par.Echo Slave 13
Par.Echo Slave 15
Par.Echo Slave 17
Par.Echo Slave 19
Par.Echo Slave 21
Par.Echo Slave 23
Par.Echo Slave 25
Par.Echo Slave 27
Par.Echo Slave 29
Par.Echo Slave 31
Par.Echo Slave 1B
Par.Echo Slave 3B
Par.Echo Slave 5B
Bit 0
141