Mitsubishi Electric MELFA FR CR800 Series User Manual page 633

Check item or cause
Is there a error occurred in the PLC CPU?
What color is Communication Server 2?
Return Communication Server 2 to icon
status and check the color displays for the
line state.
When Communication Server 2 is red (overall)
(4)
When Communication Server 2 is displayed in red, check the following.
Check item or cause
Is the communications cable connected
correctly?
Are you using the correct communication
cable?
When connected
communication, is the target CPU set
correctly?
When Communication Server 2 is green (overall)
(5)
When Communication Server 2 is displayed in green, check the following.
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Extend the time of [(4)Check at Communication Time] on
the [Detail setting] screen of [CRnQ_R communication
setting].
Red
Green
Yellow
Light blue Check the items in "(7) When
Blue
Connect the cable correctly.
Check the communication cable specifications.
Be careful. RS-232 cables and Ethernet cables can be
either cross cables or straight cables.
For the cable specifications, check your robot's
"Standard Specifications".
by CRnQ_R Set the target CPU correctly.
For details, see "9.2.5 CRnQ_R Communication
Settings".
Solution
The problem may be that the robot
controller is not connected correctly.
Check the items in "(4) When
Communication Server 2 is red
(overall)".
The problem may be that the robot
controller and the computer have different
communications settings. Check the items
in "(5) When Communication Server 2 is
green (overall)".
Check the items in "(6) When
Communication Server 2 is yellow
(overall)".
Communication Server 2 is in light blue
or blue (overall)".
Solution
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