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Siemens SIMATIC S7-300 Reference Manual page 481

Programmable logic controllers module data
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Structure of data record 128
The figure below shows the structure of data record 128 for SM 331;
AI 8 x RTD.
Byte 0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
Figure A-5
Programmable Logic Controllers S7-300 Module Data
A5E00105505-03
7
6
5
4
3
2
Channel group 1
Channel group 2
Channel group 3
Measuring range, channel group 0
(refer to Table A-10)
Smoothing, channel group 0
(refer to Table A-12)
Measuring range, channel group 1
(refer to Table A-10)
Smoothing, channel group 1
(refer to Table A-12)
Data Record 128 of the Parameters for SM 331; AI 8 RTD
Parameter Sets for Signal Modules
1
0
Module filtering mode (refer to Table A-8)
Interference suppression
Channel group 0
Measuring method, channel group 0
(refer to Table A-10)
Temperature coefficient, channel group 0
(refer to Table A-11)
Measuring method, channel group 1
(refer to Table A-10)
Temperature coefficient, channel group 1
(refer to Table A-11)
(refer to Table A-9)
A-13

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