ET 200SP Communication module CM 1xDALI (6ES7137-6CA00-0BU0)
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Manual, 06/2019, A5E46959434-AA
Appendix A Parameter data record
A
Parameter assignment and structure of parameter data record
You have the option of reassigning module parameters with the user program while the CPU
is in RUN. The parameters are transferred to the module using data record 128, for example,
with the WRREC instruction.
Table A- 1
Structure of data record
Bit
Bit 7 Bit 6 Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Byte
0
Reserved
2
Major version = 0
Minor version = 1
1
Length of DALI module parameters = 4
2
Reserved
2
Enable DALI
bus short circuit
diagnostic
1
Enable DALI
bus over voltage
diagnostics
1
Enable DALI
app controller
1
Enable integrat-
ed DALI bus
power
1
3
Reserved
2
4
The period of background detection
3
Value range in second: 60 to 3600
5
1
You activate the respective parameter by setting the associated bit to 1.
2
Reserved bits must be set to 0.
3
The high byte of the period is in byte 4 and the low byte of the period is in byte 5.
Output parameter STATUS
If errors occur when transferring parameters with the "WRREC" instruction, the module
continues operation with the previous parameter assignment. The STATUS output
parameter contains a corresponding error code.
You will find a description of the "WRREC" instruction and the error codes in the STEP 7
online help.
Error messages
The module always checks all the values of the transferred data record. Only if all the values
were transferred without errors does the module apply the values from the data record.
The instruction WRREC for writing data records returns corresponding error codes when
errors occur in the parameter STATUS.