Siemens S7-1200 - Page 956

Technical specifications
A.12 Analog signal boards (SBs)
S7-1200 Programmable controller
956 System Manual, 03/2014, A5E02486680-AG
It is recommended for measuring thermocouples that a 100 ms integration time be used. The
use of smaller integration times will increase the repeatability error of the temperature
readings.
Note
After power is ap
plied to the module, it performs internal calibration for the analog to digital
converter. During this time, the module reports a value of 32767 on each channel until valid
data is available on that channel. Your user program may need to allow for this ini
tialization
time.
Table A- 227 Wiring diagram for SB 1231 AI 1 x 16 thermocouple
SB 1231 AI 1 x 16 bit thermocouple (6ES7 231-5QA30-0XB0)
Note: Connectors must be gold. See Appendix C, Spare Parts for order number.
Table A- 228 Connector pin locations for SB 1231 AI 1 x 16 bit thermocouple (6ES7 231-5QA30-
0XB0)
Pin
X19 (gold)
1
No connection
2
No connection
3
No connection
4
No connection
5
AI 0- /TC
6
AI 0+ /TC