The 6ES7231-5QF50-0XB0 is an SM 1231 TC analog input module for the SIMATIC S7-1200 G2 controller, providing 8 channels for thermocouples type J or K. This module plugs into the system's backplane and is addressed automatically via the controller's I/O map. It is the second-generation variant, so it will not fit the first-generation S7-1200 base units without a system upgrade.
Module dimensions are 150 x 47 x 110 mm, occupying one slot on the S7-1200 G2 rail. It uses the standard spring-cage terminal for field wiring; no separate base or carrier required. For panel layout, allow additional clearance for thermocouple extension wire routing adjacent to the module.
Sourcing for this active part is quoted to order against an RFQ. Confirm lead-time with the distributor for your planned build horizon.