I/O Group Diagnosis - Siemens SIMATIC S7 F Manual

Configuration
Entering Module Names
You can enter a module name for an F-I/O In HWCONFIG. This name is copied for
the instance of the associated F module driver (F_Name_x) if the associated F
module driver is placed automatically. This enables the link between the F module
driver and the F-I/O to be seen and checked more easily.
The name entered can have a maximum of 12 characters if the associated
instance names of the F module driver are to be unique.
To do this, proceed as follows:
1. Select the desired F-I/O in HWCONFIG, and then choose the Edit > Object
Properties menu command.
2. Under Name, enter a name for the F-I/O using a maximum of 12 characters.
If the instance name of the F module driver is not unique, you will subsequently
only be able to check the link between the F module driver and the F-I/O via the
logical address.
Group Diagnosis for F-SM
This section is only valid for F-SM. Group Diagnosis in the ET 200S F-Modules
cannot be switched off.
The "Group Diagnosis" parameter switches on and off the transmission of channel-
specific diagnostic messages (e.g. wire break, short circuit) of the F-signal modules
to the CPU. The group diagnosis can be switched off on unused input or output
channels in the interests of availability. This results in the following behavior:
Fail-Safe Input Modules:
If the group diagnoses of the input channels are switched off, safe 0 values are
also sent to the CPU in the event of a fault, but no error messages are sent to the
CPU.
Fail-Safe Output Modules:
The following occurs if there are channel faults at outputs with group diagnosis
switched off:
•
In the case of faults with channel-specific switch-off, the affected channels of
the module are not switched off.
•
In the case of faults at which the affected module half (DO0...DO4 or
DO5...DO9) is switched off, the affected module half is switched off.
•
The CPU does not receive a diagnostic message, and the outputs are not
passivated, depending on the setting on the F-driver block.
Safety Note – I/O Group Diagnosis
!
In the case of fail-safe input and output modules in safety mode, group diagnosis
must be set for all the connected channels.
Please check that the switching off of the group diagnosis has really only been set
for unused input and output channels.
Fail-Safe Systems
A5E00085588-03
4-5