Siemens 6ES7326-2BF00-0AB0 Digital Output Module — Legacy Replacement. Siemens 6ES7326-2BF00-0AB0 is the exact manufacturer order number for a digital output module in the SIMATIC S7-300 portfolio. Siemens describes this exact reference as: SIMATIC S7, DIGITAL OUTPUT SM 326, 10 DO; 24V DC, 2A, FAILSAFE OUTPUT MODULE FOR SIMATIC S7F SYSTEMS WITH DIAGNOST. INTERRUPT, 40 PIN. The verified manufacturer lifecycle record is PM500:Discontinued Product or end of PLM & Support.