Nordson Encore - Plc

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.
Table 4-6 PLC LEDs
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...