Siemens SIMATIC ET 200SP CM 1xDALI - Page 23

Parameters
4.2 CM 1xDALI Module Parameters
ET 200SP Communication module CM 1xDALI (6ES7137-6CA00-0BU0)
22 Manual, 06/2019, A5E46959434-AA
Module Parameters
Description
Value range
Default
value
Configura-
tion in
RUN
Diagnostics
Diagnostics: Over
voltage on DALI bus
Enable or disable the diagnostic message on DALI bus.
• Enable: When the DALI bus is connected to a fault
over voltage (FOV) by mistake, the CM 1xDALI re-
ports an error of over voltage and the FOV LED
(Page 109) is on.
• Disable: When the DALI bus is connected to a fault
over voltage by mistake, only the FOV LED is on.
• Enable
• Disable
Enable Yes
Diagnostics: Short
circuit on DALI bus
Monitor the short circuit on DALI bus. This function is only
available when the integrated DALI bus power supply is
enabled:
• Enable: When a short circuit occurs on the DALI bus,
the module reports a diagnostic error and shuts down
the bus power.
• Disable: When a short circuit occurs on the DALI bus,
the module only shuts down the bus power.
• Enable
• Disable
Disable Yes
Period
Background detection
period (s)
The CM 1xDALI periodically sends DALI commands to
query the status of all the devices on the bus and stores
the information in the module. As a result, the status that
is saved in CM 1xDALI cannot be updated in time to get
the latest status information in the CM 1xDALI. The pro-
gram blocks of the CPU have a higher priority when ac-
cessing the DALI bus. If the program blocks of the CPU
continuously access the DALI bus, the background detec-
tion may be blocked. The background detection can de-
tect the following results:
• Whether each DALI device has a short address
• For control gear: the information of basic status, con-
trol gear type and extended status
• For sensor: the information of device status, number
of instances and type of each instance
You can set the frequency of the detection. The status
saved in the DALI device update during every detection.
60 to 3600
(second)
60 (sec-
ond)
Yes