Appendix A Parameter Data Record - Siemens SIMATIC ET 200SP CM 1xDALI Manual

Appendix A Parameter data record

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
Byte
0 Reserved
2
1
2 Reserved
3
4
5
You activate the respective parameter by setting the associated bit to 1.
1
Reserved bits must be set to 0.
2
The high byte of the period is in byte 4 and the low byte of the period is in byte 5.
3
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.
114
Bit 5 Bit 4 Bit 3
Major version = 0
Length of DALI module parameters = 4
Enable DALI
2
bus short circuit
diagnostic
The period of background detection
Value range in second: 60 to 3600
Bit 2
Minor version = 1
Enable DALI
bus over voltage
diagnostics
1 1
Reserved
2
3
ET 200SP Communication module CM 1xDALI (6ES7137-6CA00-0BU0)
Bit 1 Bit 0
Enable DALI Enable integrat-
app controller ed DALI bus
1
power
Manual, 06/2019, A5E46959434-AA
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