Siemens SIMATIC User Manual

Digital modules
3.29 Digital output module SM 322; DO 8 x DC 24 V/ 0.5 A; with diagnostics interrupt; (6ES7322-8BF00-0AB0)
S7-300 Module data
Manual, 06/2017, A5E00105505-AJ
179
3.29.2 SM 322; DO 8 x DC 24 V/0.5 A - Diagnostics
Diagnostics messages of SM 322; DO 8 x DC 24 V/0.5 A
The table provides an overview of the diagnostic messages of
SM 322; DO 8 x DC 24 V/0.5 A
Table 3- 29 Diagnostics messages of SM 322; DO 8 x DC 24 V/0.5 A
Diagnostics message
LED
Scope of diagnostics
programmable
Wire-break*
SF
Channel
yes
Load voltage missing SF Channel yes
Short-circuit to M
SF
Channel
yes
Short-circuit to L+ SF Channel yes
External auxiliary voltage missing
SF
Module
no
Internal auxiliary voltage missing
SF
Module
no
Fuse blown
SF
Module
no
Watchdog time-out
SF
Module
no
EPROM fault
SF
Module
no
RAM fault
SF
Module
no
*
The module detects a wire-break at a current < 1 mA.
If configured accordingly, the
SF LED and corresponding channel error LED light up when a wire-break is detected.
Note
Prerequisite for the detection of errors indicated by programmab
le diagnostic messages is
an appropriate configuration of the digital module in
STEP 7 .

Siemens SIMATIC Specifications

General

Product type designation	SIMATIC
CPU	Varies by model
Memory	Varies by model
Input/Output	Varies by model
Communication	Varies by model
Programming Language	STEP 7
Operating Temperature	0°C to 60°C (varies by model)
Protection Class	IP20
Category	Programmable Logic Controller (PLC)