MotionSuite™ MP940 Machine Controller Hardware Manual
Section 4: LED Indicators
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Section 4: LED Indicators
LED Display
The MP940 runs a series of tests during start-up. If an error is detected, the ERR LED
flashes, and the content of the error corresponds to the number of flashes.
MotionSuite™ software tools cannot communicate with the controller while an error
LED is flashing or memory initialization is occurring. The MP940 LEDs are shown in
the following table.
In addition, there are the following four LEDs.
LED Display Patterns
Type
LED
Meaning
RDY
(Green)
RUN
(Green)
ERR
(Red)
BAT
(Red)
Normal
ON
OFF
OFF
OFF
Application program stopped
ON
ON
OFF
OFF
Normal application program execution
Error
OFF
OFF
ON
OFF
Memory error (initialization may be required)
OFF
OFF
OFF
OFF
Initial operation (when display continues)
OFF
OFF
Flashing
OFF
1. 2 flashes: RAM error
2. 3 flashes: ROM error
3. 4 flashes: Peripheral LSI letter
Warning
—
—
—
ON
Battery alarm
ON
ON
ON
OFF
1. Operand error or I/O error
System (S) register message
(no LED display)
Hardware status (Momentary Stop, RUN/STOP, Test-
ing Mode, etc.)
Other
Flashing
Flashing
OFF
OFF
Memory initialization by DIP switch setting complete.
OFF
OFF
ON
OFF
Offline testing mode.
Description
Type
Color
Meaning
PRT1
RS232
Green
Flashes to indicate communication
PRT2
RS422
Green
Flashes to indicate communication
TX
Mechatrolink
Green
Flashes to indicate communication
RX
Mechatrolink
Green
Flashes to indicate communication
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