Troubleshooting
4-14
Part 1618871
−
01
2020 Nordson Corporation
PLC
See Figure 4-7 and refer to Table 4-6. Use the PLC LEDs to help diagnose
problems.
LED
LED Status
Description
Correction
Red
Green
PLC
OFF
OFF
Runtime not started
No power at X6
Check power supply PS2 for
+24 V
OFF
Flashing
Communication
OFF
ON
PLC runtime started
ON
—
Error in runtime
Flash error
Checksum error
SSL connection (inspect log file)
ON
ON
PLC runtime started and has
error
PRG
OFF
OFF
No application found on device
Program needs to be reloaded.
OFF
ON
Application running
Flashing
Communication (green flashing)
ON
Flashing
Application has stopped
Program error
OFF
Flashing
Application is stopping
SD
OFF
No micro SD card found
Replace Micro SD card.
ON
Micro SD card found
USB
OFF
OFF
No USB host found
OFF
ON
USB host inserted
RS485
OFF
OFF
OFF
ON
Communication channel opened
OFF
Flashing
BUS activity
Continued...
Содержание Encore
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