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Siemens Simatic S7-400 User Manual

Page 132

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Digital Modules

4-10

S7-400, M7-400 Programmable Controllers Module Specifications

A5E00069467-07

Diagnostic Messages of the Digital Modules

The table below gives an overview of the diagnostic messages for the digital
modules with diagnostics capability.

You can find out which diagnostic message each module is capable of in the
Appendix entitled “Diagnostic Data of the Signal Modules”.

Table 4-8

Diagnostic Messages of the Digital Modules

Diagnostic Message

LED

Scope of the

Diagnosis

Parameters Can

Be Assigned

Module problem

INTF/EXTF

Module

No

Internal malfunction

INTF

Module

No

External malfunction

EXTF

Module

No

Channel error present

INTF/EXTF

Module

No

External auxiliary supply missing

EXTF

Module

No

Front connector missing

EXTF

Module

No

Module not parameterized.

INTF

Module

No

Wrong parameters

INTF

Module

No

Channel information available

INTF/EXTF

Module

No

STOP mode

Module

No

Internal voltage failure

INTF

Module

No

EPROM error

INTF

Module

No

Hardware interrupt lost

INTF

Module

No

Parameter assignment error

INTF

Channel

No

Short-circuit to M

EXTF

Channel

Yes

Short-circuit to L+

EXTF

Channel

Yes

Wire break

EXTF

Channel

Yes

Fuse blown

INTF

Channel

Yes

Sensor supply missing

EXTF

Channel/channel

group

Yes

No load voltage L+

EXTF

Channel/channel

group

Yes

Note

A prerequisite for detecting the errors indicated by programmable diagnostic
messages is that you have assigned parameters to the digital module accordingly
in STEP 7.

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