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A
Troubleshooting
A-48
12.520 : PIO DC24V low voltage
Code
: &H000C &H0208
Meaning/Cause
a. 24V power is not supplied to the PIO board.
b. The power voltage supplying to the PIO board has dropped.
Action
a. Supply 24V power.
b. Check if any device with over voltage source capacity is connected or how power supply
state is.
12.521 : PIO DC24V over voltage
Code
: &H000C &H0209
Meaning/Cause
Exceeding 24V power is supplied to the PIO board.
Action
Supply power at 24V.
12.522 : PIO STD DC24V low voltage
Code
: &H000C &H020A
Meaning/Cause
a. 24V power is not supplied to the PIO STD board.
b. The power supply voltage supplying to the PIO STD board has dropped.
Action
a. Supply 24V power.
b. Check if any device with over voltage source capacity is connected or how power supply
state is.
12.541 : DeviceNet link error
Code
: &H000C &H021D
Meaning/Cause
a. Error occurred on the cable for DeviceNet system.
b. The communication setting of the DeviceNet system is incorrect.
c. Power for communication is not supplied.
d. The master module power is turned off, has stopped operating or is damaged.
e. The DeviceNet compatible module is damaged.
Action
a. Check for a break disconnection, wiring error, short circuit on the DeviceNet cable or the
specifications (cable length, etc.).
b. Check the communication settings.
c. Check that the communication power is supplied.
d. Check that the master module operates correctly.
e. Replace the DeviceNet compatible module.
12.542 : DeviceNet overtime error
Code
: &H000C &H021E
Meaning/Cause
a. Communication error occurred by noise, etc. in the DeviceNet system.
b. The master module power is turned off or has stopped operating.
c. The cable is broken or unconnected.
Action
a. Take the noise preventive actions for the cable of the DeviceNet system and the controller.
b. Check that the master module operates correctly.
c. Check the DeviceNet cable connection.
12.551 : EtherNet/IP link error
Code
: &H000C &H0227
Meaning/Cause
a. Error occurred on the cable for EtherNet/IP system.
b. The communication setting of the EtherNet/IP system is incorrect.
c. The master module power is turned off, has stopped operating or is damaged.
d. The EtherNet/IP compatible module is damaged.
Action
a. Check for a break disconnection, wiring error, short circuit on the EtherNet/IP cable or the
specifications (cable length, etc.).
b. Check the communication setting.
c. Check that the master module operates correctly.
d. Replace the EtherNet/IP compatible module.
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