Siemens SIMATIC ET 200SP CM 1xDALI - Detect Unaddressed Device; Query Address Status

CM 1xDALI command list
3.5 Addressing
ET 200SP CM 1xDALI Communication Model Description
48 Programming Manual, 12/2019, A5E47581955-AA
3.5.3 Detect unaddressed device
Description
Use this CM command to detect the existence of unaddressed devices.
Command ID
53
Input Param-
eters
Byte 0 Specifies the device type:
• 1: control gears
• 2: input devices
Response
Parameters
Byte 0
Return code (Page 51)
Byte 1 Existence of unaddressed device
• 0: no unaddressed devices
• 1: existing unaddressed devices
3.5.4 Query address status
Description
Use this CM command to query the status of all short addresses that are stored in the
CM 1xDALI.
CM 1xDALI updates the status by the background detection, so the response is not
the latest status of the devices.
You can set the period of background detection in module parameters.
Command ID
54
Input Param-
eters
Byte 0 Specify the device type.
• 1: control gears
• 2: input devices
Response
Parameters
Byte 0
Return code (Page 51)
Byte 1 to 64 This field shows the status of all the short addresses. Byte "n" indi-
cates the status of the device with short address "n". For example,
Byte 2 indicates the device with short address 2.
For each byte, the bits have the following meanings:
Bit 7
Configured flag
Bit 6 Address changed flag.
If CM 1xDALI changed the short address after scan, this flag
is set. The action changing short address or setting parame-
ters clears this flag.
Bit 5 to
0
Address status (Page 52) of the devices.
Byte 65 Device number exceed flag.
• 1: the number of the devices on the bus exceeds the maximum
number of allowed devices (64) in a DALI system.
• 0: the number of devices on the bus is within the allowed number.
Byte 66 Unaddressed device existed flag
• 1: at least one unaddressed device exists on the bus.
• 0: no unaddressed device exists on the bus.