Troubleshooting

Before contacting Technical Support, you may want to try the following:

Open the IO-Link Master web interface and review the following web pages:
- IO-Link Diagnostics
- EtherNet/IP Diagnostics
- Modbus/TCP Diagnostics
Reboot the IO-Link Master
Verify that you are using the correct types of cables on the correct connectors and that all cables are connected securely.
Verify that the network IP address, subnet mask, and gateway are correct and appropriate for the network. Make sure that the IP address programmed into the IO-Link Master matches the unique reserved IP configured address assigned by the system administrator.

Note
Remember that the IP address set on the IO-Link Master with the rotary switches override software settings on the Network page or in PortVision DX.
If using DHCP, the host system needs to provide the subnet mask. The gateway is optional and is not required for a purely local network..
Verify that the Ethernet hub and any other network devices between the system and the IO-Link Master are powered up and operating.
If you have a spare IO-Link Master, try replacing the IO-Link Master.

Check the IO-Link Master LEDs

LED Name	Description
PWR (Power)	A lit green LED indicates that the IO-Link Master is powered.
MS (Module Status)	This LED provides the following information: Off = No module status Flashing green and red = Self-test Flashing green = Standby – not configured Steady green = Operational Flashing red = Minor recoverable fault Steady red = Major unrecoverable fault
NET (Network)	This LED provides the following information: Off = No IP address Flashing green and red = Self-test Flashing green = An IP address is configured, but no CIP connections are established, and an Exclusive Owner connection has not timed out Steady green = Active EtherNet/IP connection and no EtherNet/IP connection time-outs Flashing red = One or more EtherNet/IP connection time-outs Steady red = Duplicate IP address on network
Port 1-4	This LED provides the following information about the IO-Link port. Off: SIO mode - signal is low or disconnected Yellow: SIO mode - signal is high Red: Hardware fault Solid Green: An IO-Link device is connected and communicating Blinking Green: Searching for IO-Link devices
Port 1-4 DI	This LED indicates digital input on Pin 2. Off: DI signal is low or disconnected Yellow: DI signal is high
EIP 1/EIP 2	The EIP LEDs provide this information: Green lit LED = link Green blinking LED = Activity

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