Siemens SIMATIC PCS 7 Operating Manual page 46

Configuring S7F/FH hardware
6.4 Setting system parameters for F-signal modules
Group diagnostics
If you check this box for a specific channel, a channel-specific event (a wire break, for
example) will trigger an error reaction in the safety program (the substitute value is activated
on the the channel driver and QBAD is set). If "Enable diagnostics interrupt" is selected, a
diagnostics interrupt will be triggered in the CPU and a corresponding process control
message will be sent on the OS.
The "Group diagnostics" parameter is used to activate and deactivate the transfer of
channel-specific diagnostic messages (e.g. wire break, short circuit) on F signal modules to
the CPU.
For the following F signal modules, group diagnostics needs to be activated whenever a
channel is activated:
● SM 326; DI 8 x NAMUR (order no. 6ES7326-1RF00-0AB0; 6ES7326-1RF01-0AB0)
● SM 326; DI 24 x DC 24 V (order no. 6ES7326-1BK00-0AB0)
● SM 336; DO 10 x DC 24V/2A (order no. 6ES7326-2BF00-0AB0)
● SM 326; AI 6 x 13 Bit (order no. 6ES7336-1HE00-0AB0)
With all other F signal modules, this takes place automatically when you activate a channel.
To maintain an overview, you should deactivate group diagnostics on input or output
channels which are not in use on the F signal modules or wire the module so that no channel
errors occur.
Note
Where fail-safe input and output modules in safety mode are concerned, group diagnostics
must be active on all connected channels. Please check that group diagnostics has only
been deactivated for input and output channels which are not in use.
46
Compendium Part B - Process Safety (V8.2)
Operating Manual, 07/2016, A5E35031794-AB