User`s manual

6
FUNCTIONS
6.2 Safety CPU Operation Mode
6.2.2 Checking safety CPU operation mode
6 - 5
1
Overview
2
Performance Specification
3
Sequence Program Configuration and Execution Conditions
4
I/O Nunber Assignment
5
Memories and Files Handled by CPU Module
6
Functions
7
Communication with Intelligent Function Module
8
Parameters
6.2.2 Checking safety CPU operation mode
The safety CPU operation mode of the CPU module can be checked with the following
methods.
• Checking with the LEDs on the front of the CPU module
• Checking with the GX Developer online operation screen
• Checking with a special relay or a special register
(1) Checking with the LEDs on the front of the CPU module
The current safety CPU operation mode can be checked with the "ALIVE" LED and
"TEST" LED on the front of the CPU module.
Table6.2 Checking safety CPU operation mode with the "ALIVE" LED and "TEST" LED
TEST MODE SAFETY MODE (wait-for-restart) SAFETY MODE
USER
TEST
ON
ON
A
LIVE
RUN
ERR. BAT.
USER
TEST
Flashing
ON
A
LIVE
RUN
ERR. BAT.
USER
TEST
OFF
ON
A
LIVE
RUN
ERR. BAT.