Heating Control Interface for SIMATIC S5/S7
This 6ES7171-1AA00-0AA0 is the main interface module for heating control in a SIMATIC environment, connecting to S5 or S7 controllers over L2-DP—PROFIBUS-DP in practice. Critical for the BOM: the module will not power up without either a power output LA724 or a system voltage meter NE724. Order one alongside it.