Mô-đun S7-300 SM321 6ES7321-1BP00-0AA0 SIMATIC S7-300 digital input SM 321 Isolated in groups of 16 64 DI 24 V DC 3ms Sink/source input Terminal blocks
Mô-đun S7-300 SM321 6ES7321-7BH01-0AB0 SIMATIC S7-300 Digital input SM 321 isolated 16 DI; 24 V DC 1x 20-pole process interrupt diagnostics suitable for isochronous mode
Mô-đun S7-300 SM322 6ES7322-1BH01-0AA0 SIMATIC S7-300 Digital output SM 322 isolated 16 DO 24 V DC 0.5A 1x 20-pole Total current 4 A/group (8 A/module)