7 PROCEDURES BEFORE OPERATION
135
7
Operation check procedure
1.
Checking
Check the status of each module used in the system and program behaviors.
• Check each module to see whether an error occurred.
• Check that the LED status of each module is as follows.
*1 For the redundant master station system, the MST LED of the standby system master/local module flashes.
*2 Because the remote head module is not in a redundancy configuration for the redundant master station system, the following LEDs are
always turned off.
CTRL LED
SBY LED
• Check whether an error occurred in CC-Link IE Field Network diagnostics. (
MELSEC iQ-R CC-Link IE Field Network
User's Manual (Application))
• Check that the safety program and standard program behave normally.
2.
Switching the safety operation mode
For normal operation as a safety control system via the SIL2 Process CPU, switch the safety operation mode to SAFETY
MODE. Before switching the safety operation mode, set the SIL2 Process CPU to STOP state. (
Page 159 Switching the
MELSEC iQ-R CPU Module User's Manual (Application))
When the SIL2 Process CPU is in STOP state, a continuation error of operating status mismatch is detected in
the standby system.
• Control system
• Standby system
*1
• Remote head module side
*2
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