Siemens SIMATIC - Page 544

Parameter sets of signal modules
A.7 Parameters of analog input module SM 331; AI 8 x RTD
S7-300 Module data
544 Manual, 06/2017, A5E00105505-AJ
Interference frequency suppression at 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- 11 Interference suppression coding of SM 331; AI 8 x RTD
Interference frequency suppression
Code
400 Hz
2#00
60 Hz 2#01
50 Hz
2#10
50/60/400 Hz
2#11
Measurement types and measuring ranges of SM 331; AI 8 x RTD
The table below shows all measurement types and measuring ranges of the module,
including their codes. Enter these codes at the corresponding bytes of data record 128 (see
the figure
Data record 1 for the parameters of analog input modules ).
Table A- 12 Measuring range codes of SM 331; AI 8 x RTD
Measurement type
Code
Measuring range
Code
disabled
2#0000
disabled
2#0000
Resistance (4-wire connection) 2#0100 150 Ω
300 Ω
600 Ω
2#0010
2#0100
2#0110
Resistance (3-wire connection) 2#0101 150 Ω
300 Ω
600 Ω
2#0010
2#0100
2#0110