Digital modules
3.11 Digital input module SM 321; DI 16 x 24 VDC; with hardware and diagnostic interrupts (6ES7321-7BH01-
0AB0)
S7-300 Module data
80 Manual, 06/2017, A5E00105505-AJ
3.11 Digital input module SM 321; DI 16 x 24 VDC; with hardware and
diagnostic interrupts (6ES7321-7BH01-0AB0)
Order number: "Standard module"
6ES7321-7BH01-0AB0
Order number: "SIPLUS S7-300 module"
6AG1321-7BH01-2AB0
Properties
Properties of SM 321; DI 16 x DC 24 V with hardware and diagnostic interrupts:
● 16 inputs, electrically isolated in groups of 16
● Rated input voltage 24 V DC
● Input characteristics to IEC 61131, Type 2
● suitable for switches and 2- /3-/4-wire proximity switches (BEROs)
● 2 short circuitproof sensor supplies for each group of 8 channels
● external redundant sensor supply is supported
● "Sensor supply (Vs)" status display
● Group error display (SF)
● Supports isochronous mode
● Supports parameter reassignment in RUN
● Programmable diagnostics
● Programmable diagnostic interrupt
● Programmable hardware interrupts
● Programmable input delays
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