Parameter Settings For Safety Observation - Mitsubishi Electric C70 Setup Manual

MITSUBISHI CNC
3 PLC CPU Initial Setup

3.1.4 Parameter Settings for Safety Observation

The following settings are required on the "Q parameter setting" dialog box to execute the safety signal comparison.
For details, refer to "Safety Observation Specification Manual" (BNP-C3059-001N).
I/O assignments setting
Double click "I/O assignment", and set the headXY device on the dual signal module.
Set the same value to CNC parameters "#21143 SSU_Dev1" to "#21145 SSU_Dev3".
To prevent the device No. being changed by removing the module, be sure to set headXY device on the dual signal
module. If the headXY device settings are different from the parameter settings from "#21143 SSU_Dev1" to
"#21145 SSU_Dev3", the safety observation error will occur when the controller's power is turned ON or in 24 hours
continuous operation.
To confirm the device assignment of the dual signal module, click "Acknowledge XY assignment" on the bottom of
the screen. To confirm the actual mounting state, select [Diagnositics] - [System monitor] with connecting GX
Works2 to the controller.
Select "I/O mix" for "Type" of the dual signal module.
The dual signal module occupies 32 points in both input and output. Pay attention to the next slot's I/O assignment.
Click the "Detailed setting" in the "I/O assignment" on the screen, and set the dual signal module's "Control PLC" to
"PLC No.1" in the "Intelligent function module detailed setting" dialog box.
Set "Error time output mode" to "Clear".
Unless the "Control CPU" is set to "PLC No.1", other CPU module may control the signal. Make sure that the
"Control CPU" is set to "PLC No.1". Also if "Error time output mode" is not set to "Clear", the safety observation
error will occur when the controller's power is turned ON or in 24 hours continuous operation.
(Note) This parameter is enabled when the controller's power is turned ON again.
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