540
33 FUNCTIONS
33.1 Safety Operation Mode
Safety operation mode switching conditions
The conditions under which the safety operation mode can be changed are shown below.
How to switch the safety operation mode
The safety operation mode can be switched using the engineering tool.
[Online] [Safety PLC Operation] [Safety Operation Mode Switch]
For details, refer to the following.
GX Works3 Operating Manual
Operations restricted in SAFETY MODE
When the safety operation mode is set to SAFETY MODE, the following operations cannot be performed.
Safety operation mode
switching direction
Condition
TEST MODE SAFETY MODE The user who is making the switch has "Developers" access level or higher, and is currently logged on.
The safety operation mode is currently set to the TEST MODE.
The Safety CPU operating status is other than RUN.
The following files held by the engineering tool, Safety CPU, and safety function module match.
• Safety CPU parameter
• Safety module parameter
• Safety program
• Safety FB file
• Safety global label setting file
• Standard/safety shared label setting file
The following files are not being written from another engineering tool.
• Safety CPU parameter
• Safety module parameter
• Safety program
• Safety FB file
• Safety global label setting file
• Standard/safety shared label setting file
SAFETY MODE TEST MODE The user who is making the switch has "Developers" access level or higher, and is currently logged on.
The safety operation mode is currently set to SAFETY MODE or SAFETY MODE (wait-for-restart).
Operation Restrictions
Writing data to the programmable controller Data cannot be written to files relating to safety control such as safety programs or safety CPU
parameters. ( Page 532 File operation available)
Device/label test Device/label tests (value changes) cannot be conducted from external devices for the
following. (This includes value changes from the test function or monitor windows, and change
requests from other external devices.)
• Safety global devices
• Safety local devices
• Safety global labels
• Safety local labels
• Standard/safety shared label
Memory operation Memory operations for the CPU built-in memory (including extended SRAM cassette) cannot
be performed from the engineering tool. ( Page 530 Memory Operation)
However, SD memory card initialization is possible.
Security function Security key authentication
function
The following operations cannot be performed for the Safety CPU or extended SRAM
cassette.
• Registration
•Delete
File password function The following operations cannot be performed for the Safety CPU.
• Registration
• Change
•Delete
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