The 6ES7131-1BH00-0XB0: Sixteen sinking or sourcing inputs, 24V DC nominal, with channel isolation that makes noise chasing less painful in a mixed panel. If the input LED looks wrong, check the shield bond on the sensor cable before you condemn the module — the ET 200L backplane is decent, but it can't fix a floating reference.
The 6ED1052-1FA00-0BA0 and 6ED1052-1HB00-0BA1 are different expansion modules; they are not for the ET 200L. This module is for the ET 200L rack.
