Name: Siemens SIMATIC S7-300 Module data
Brand: Siemens
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Digital modules

3.10 Digital input module SM 321; DI 16 x 24 VDC; with hardware and diagnostic interrupts

S7-300 Automation System Module data

Manual, 08/2006, A5E00105505-04

3-29

3.10.3 Diagnostics of SM 321; DI 16 x DC 24 V

Diagnostics messages of SM 321; DI 16 x DC 24 V

The table below shows an overview of the diagnostic messages of SM 321; DI 16 x DC 24 V.

Table 3-11 Diagnostics messages of SM 321; DI 16 x DC 24 V

Diagnostics message LED Scope of diagnostics programmable

Encoder supply missing SF Channel group

Wirebreak SF Channel group

Module not programmed SF Channel group

Yes

External auxiliary voltage missing SF Module

Internal auxiliary voltage missing SF Module

Fuse blown SF Module

Incorrect module parameters SF Module

Watchdog time-out SF Module

EPROM error SF Module

RAM error SF Module

Hardware interrupt lost SF Module

Note

Prerequisite for detecting errors indicated by programmable diagnostic messages is an

appropriate configuration of the digital module in STEP 7.

(6ES7321-7BH01-0AB0)

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