Siemens S7-1200 System Manual page 920
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Also See for S7-1200:
- Operating instructions manual (132 pages) ,
- Programming manualline (74 pages) ,
- Manual (46 pages)
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Technical specifications
A.9 Thermocouple and RTD signal modules (SMs)
Model
Cable length (meters)
Wire resistance
Table A- 165 Diagnostics
Model
Overflow/underflow
1
Wire break (current mode only)
24
VDC low voltage
1
The overflow, underflow and low voltage diagnostic alarm information will be reported in the analog data values even if
1
the alarms are disabled in the module configuration.
When wire break alarm is disabled and an open wire condition exists in the sensor wiring, the module may report
2
random values.
The SM 1231 Thermocouple (TC) analog signal module measures the value of voltage
connected to the module inputs. The temperature measurement type can be either
"Thermocouple" or "Voltage".
● "Thermocouple": The value will be reported in degrees multiplied by ten (for example, 25.3
degrees will be reported as decimal 253).
● "Voltage": The nominal range full scale value will be decimal 27648.
920
SM 1231 AI 4 x 16 bit TC
100 meters to sensor max.
100 Ω max.
SM 1231 AI 4 x 16 bit TC
Yes
Yes
2
Yes
SM 1231 AI 8 x 16 bit TC
100 meters to sensor max.
100 Ω max.
SM 1231 AI 8 x 16 bit TC
Yes
Yes
Yes
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG
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