Siemens SIMATIC ET 200SP CM 1xDALI - System; Poll the Status and Event of CM 1 Xdali

CM 1xDALI command list
3.1 System
ET 200SP CM 1xDALI Communication Model Description
20 Programming Manual, 12/2019, A5E47581955-AA
3.1 System
System commands are the basic CM command of the CM 1xDALI.
3.1.1 Poll the status and event of CM 1xDALI
Description
Use this CM command to send a heartbeat message to CM 1xDALI module to query
its status and event message.
In order to receive all the event messages in time, Siemens recommends sending this
command every 100 milliseconds. If the CM 1xDALI does not receive this command
for 10 seconds, it stops the background detection
1
. When the CM 1xDALI receives
this command again, it starts an initialize process and the background detection.
The event message value of 16#FFFFFF indicates there is no event message re-
ceived.
Command ID
0
Input Param-
eters
Byte 0
• 0: CM 1xDALI only responds with its status.
• 1: CM 1xDALI responds with its status and event message.
Response
Parameters
Byte 0
Return code (Page 51)
Byte 1 to 4 This field shows the CM 1xDALI status. When this field is 0, the
CM 1xDALI works normally. For the other values of the field, see the
description below.
Bit
Description
0
Initialization is not completed
1
Quiescent mode by DALI command
2
Inactive by DALI command
3
Application controller disabled
4
DALI bus over voltage
5
Missing voltage of module input
6
DALI bus short circuit
7
External DALI bus power failure
8
Too many error frames on DALI bus
9 to 31 Reserved
Byte 5
Byte 0 of event message 1
2
Byte 6 Byte 1 of event message 1
2
Byte 7
Byte 2 of event message 1
2
Byte 8
Event message 2
2
Byte 9
Byte 10