As-I Line Calls; Configuring Actual Parameter Values (Store_Actual_Parameters) - Siemens AS-i Master CM 1243-2 a Manual

7.2.2

AS-i line calls

7.2.2.1

Configuring actual parameter values (Store_Actual_Parameters)

Meaning
With this call, the current parameters of the AS-i slave are written from the volatile memory
of the AS-i master CM 1243-2 to its retentive memory.
In the factory setting, the bits of the AS-i slave parameters in the AS-i master CM 1243-2 are
all assigned the value 1.
The following information must be transferred to the "WRREC" instruction as parameters.
● INDEX:7
● RECORD:2 bytes
Table 7- 8 Structure of the utility WRREC - Index 7
Byte
Bit 7
0
1
You can find information about "Parameters" and the ID codes for the "Configuration" (I/O
configuration, ID code, ID1 code, and ID2 code) in the manual "AS-Interface − Introduction
and Basic Information" (Order No: 6GK1 971-2SA01-0AA0). The manual is available on the
Internet (http://support.automation.siemens.com/WW/view/en/5581657).
Exceptions
There are a few AS-i slave types for which the AS-i master administers the slave
parameterization itself. The configured parameters for these AS-i slaves are always equal to
F .
H
AS-i master CM 1243-2 and AS-i data decoupling unit DCM 1271 for SIMATIC S7-1200
Manual, 04/2013, A5E02655230010A/RS-AA/003
Bit 6 Bit 5
7.2 Description of the AS-i line calls and AS-i slave calls
Meaning
Bit 4 Bit 3
0000
H
0000
H
Using the data record interface
Bit 2 Bit 1 Bit 0
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