Mitsubishi Electric L26CPU-BT User Manual page 63

Continued from the previous figure
Reset the programmable controller CPU,
or power it OFF and then ON.
"MST" LED is flashing (test in progress)
Flashing
The test result is shown by the "LEDs"
of the L series master/local module.
[When normal]
The "MST" LED lights up, and
the "ERR." LED is off.
On Off
[When abnormal]
The "MST" LED lights up and
the "ERR." LED flashes.
On Flashing
Replace the module since there is a
hardware malfunction.
(Check once again to see that the supplied
terminating resistor is connected between
terminals DA and DB.)
End
CHAPTER 6 INSTALLATION AND CONNECTION
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