Siemens 6ES7274-1XH50-0XA0 PLC CPU Module. Siemens 6ES7274-1XH50-0XA0 is the exact manufacturer order number for a plc cpu module in the SIMATIC S7-1200 portfolio. Siemens describes this exact reference as: SIMATIC S7-1200, simulator module SIM 1274, for CPU 1214 14 input switches 24 V DC. The verified manufacturer lifecycle record is PM300: Active Product.