Panasonic SL-VGU1-C

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Chapter 2
Error Indication
If an error occurs on the system, the SL-VGU1-C will output the error signal, and the error indicator and the ad-
dress display of the controller will inform the error.
Error Indication on S-LINK V System Side
Error No. Cause of error Transmission state during error
Error 0 • Fault in system (controller) Transmission stopped
Error 1 • Short-circuit between +24V and D
Transmission stopped.
Restarted automatically 5 sec. after cause of error is
rectied.
Error 2 • Short-circuit between D and G
Error 3 • Fault or disconnection of recognized I/O unit
Transmission continued
Error 4 • Addition of unrecognized unit
Error 5
• Output short-circuit of output unit
• Drive power supply of I/O device switched off
Error 6 • System setting not done correctly.
Automatically restored when system setting is cor-
rectly done.
Note: If two or more errors are detected at the same time, errors 1 and 2 will be given priority in indication.
Error Indication on CC-Link Side
Indicator Cause of error
L RUN
(Green)
Lights up • When data sent from the master station is received properly.
Turns off • When a data receiving error, transmission error (CRC error), or overtime is detected.
L ERROR
(Red)
Lights up
• When a transmission error (CRC error) is detected.
• When a station number setting error or transmission speed (baud rate) setting error is detected.
Blinks • When the set station number or transmission speed is changed during operation.
Turns off • When a transmission error (CRC error) or overtime is detected.
RD (Green) • Lights up depending on the received data.
SD (Green) • Lights up depending on the sent data.