Parameter sets of signal modules
A.5 Parameters of analog input module SM 331; AI 8 x RTD
S7-300 Automation System Module data
Manual, 08/2006, A5E00105505-04
A-15
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Figure A-8 Data record 128 of SM 331; AI 8 x RTD (continued)
Note
The representation of limits matches the analog value representation. Observe range limits
when setting the limit values.
Modes of operation of SM 331; AI 8 x RTD
The table below contains the coding at byte 0 of data record 128 for the various modes of
operation (see the previous figure.)
Table A-8 Operating mode codes of SM 331; AI 8 x RTD
Mode of operation Code
8 channels, hardware filter 2#00000000
8 channels, software filter 2#00000001
4 channels, hardware filter 2#00000010
Noise suppression of SM 331; AI 8 x RTD
The table below contains the frequency codes to be entered at byte 1 of data record 128
(see the previous figure.) The 50 Hz, 60 Hz and 400 Hz only apply to 8channel software filter
mode. The 50 Hz, 60 Hz and 400 Hz settings only apply to 4- and 8-channel hardware filter
mode.
Table A-9 Noise suppression codes of SM 331; AI 8 x RTD
Noise suppression Code
400 Hz 2#00
60 Hz 2#01
50 Hz 2#10
50/60/400 Hz 2#11
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