Siemens 6ES7321-7RD00-0AB0 Digital Input Module — Legacy Replacement. Siemens 6ES7321-7RD00-0AB0 is the exact manufacturer order number for a digital input module in the SIMATIC S7-300 portfolio. Siemens describes this exact reference as: ********** spare part ********* SIMATIC S7, digital input SM 321, isolated, 4 DI; 24 V DC, NAMUR/DIN 19234, for signals from the hazardous area, diagnostics-capable, PTB tested,. The verified manufacturer lifecycle record is PM410:Product cancellation.
********** spare part ********* SIMATIC S7, digital input SM 321, isolated, 4 DI; 24 V DC, NAMUR/DIN 19234, for signals from the hazardous area, diagnostics-capable, PTB tested,