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A.2 parameters of the digital input modules – Siemens Simatic S7-400 User Manual

Page 566

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Parameter Sets for Signal Modules

A-4

S7-400, M7-400 Programmable Controllers Module Specifications

A5E00069467-07

A.2

Parameters of the Digital Input Modules

Parameters

The table below contains all the parameters you can set for digital input modules.

You will see which parameters you can modify from the list:

in STEP 7

with SFC 55 ”WR_PARM”

The parameters set with STEP 7 can also be transferred to the module with SFCs
56 and 57 (refer to the STEP 7 manuals).

Table A-2

Parameters of the Digital Input Modules

Parameter

Data Record

No.

Parameters Can Be Assigned

with ...

... SFC 55

... STEP 7

Destination CPU for interrupts

No

Yes

Input delay

0

No

Yes

Diagnostics

No

Yes

Hardware interrupt enable

Yes

Yes

Diagnostic interrupt enable

Yes

Yes

Reaction to error*

1

Yes

Yes

Hardware interrupt with rising edge

1

Yes

Yes

Hardware interrupt with falling edge

Yes

Yes

Substitute “1”*

Yes

Yes

*

Only in 6ES7421-7BH00-0AB0

Note

If you want to enable the diagnostic interrupt in the user program in data record 1,
you must enable the diagnosis in data record 0 beforehand using STEP 7.

Structure of Data Record 1

The figure below shows the structure of data record 1 (bytes 0, 1, 2 and 3) for the
parameters of the digital input modules.

You enable a parameter by setting the corresponding bit to “1”.

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