Pull Or Plug Of Modules Ob - Siemens S7-1200 System Manual

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Table of Contents

Startup information for the diagnostic error interrupt OB

The LADDR input contains the hardware identifier of the device or functional unit which returned the error. The

hardware identifier is assigned automatically when components are inserted in the device or network view and appears

in the Constants tab of PLC tags. A name is also assigned automatically for the hardware identifier. These entries in the

Constants tab of the PLC tags cannot be changed.

Pull or plug of modules OB

The "Pull or plug of modules" OB executes when a configured and non-disabled distributed

I/O module or submodule (PROFIBUS, PROFINET, AS-i) generates an event related to

inserting or removing a module.

Pull or plug of modules event

The following conditions generate a pull of plug of modules event:

● Someone removes or inserts a configured module

● A configured module is not physically present in an expansion rack

● An incompatible module is in an expansion rack that does not correspond to the

● A compatible module for a configured module is in an expansion rack, but the

● A module or submodule has parameterization errors

If you have not programmed this OB, the CPU changes to STOP mode when any of these

conditions occur.

S7-1200 Programmable controller

System Manual, 03/2014, A5E02486680-AG

configured module

configuration does not allow substitutes

IO state of the device:

Bit 0 = 1 if the configuration is correct, and = 0 if the configuration is

no longer correct.

Bit 4 = 1 if an error is present (such as a wire break). (Bit 4 = 0 if

there is no error.)

Bit 5 = 1 if the configuration is not correct, and = 0 if the configuration

is correct again.

Bit 6 = 1 if an I/O access error has occurred. Refer to LADDR for the

hardware identifier of the I/O with the access error. (Bit 6 = 0 if there

is no error.)

Hardware identifier of the device or functional unit that reported the

Channel number

TRUE if more than one error is present

PLC concepts

4.1 Execution of the user program