Siemens S7-300 - 5.3 Replacing Fail-Safe Signal Modules

Configuring the Ethernet CP with STEP 7
3.3 Setting further CP properties
Configuring and commissioning S7 CPs for Industrial Ethernet
46 Configuration Manual, 09/2013, C79000-G8976-C182-13
Use
● Inputs, outputs
Assign a start address to the module. (Outputs only if the option "Address setting for
LOCK/UNLOCK with FETCH/WRITE" is selected)
● "Address setting for LOCK/UNLOCK with FETCH/WRITE" option
Select this option if you want to use the access coordination function with the FCs
LOCK/UNLOCK in FETCH/WRITE mode.
This function uses process output via the backplane/P bus. As a result, the output
addresses can be set as soon as this option is selected.
3.3.4
"Options / Settings" parameter group
Options tab
Depending on your CP type, you can make the following settings:
Table 3- 3 Possible settings for the "Options" parameter group
Option / input area
Meaning / effect
• Module access protection
(protection level)
With this function, you can protect the CP from accidental access
during productive operation. The following options are available:
• Not locked
• Status-dependent
With this setting, only write access to the CP is possible when
the CPU is in STOP mode.
This is the recommended setting.
The default is "Not locked".