IOLM 8-EIP Connecting Devices

You can use the IO-Link Master Library for EtherNet/IP and Modbus/TCP or the following information to connection IO-Link devices to the IO-Link Master. IO-Link Port Connector

The IOLM 8-EIP provides eight IO-Link ports with M12 connectors (5-pin female/A coded).

[Note]
Note

Make sure that you tighten the cables properly to maintain IP67 capabilities.

This table provides signal information for the IO-Link connectors.

PinSignalDescription
1L+Power supply (+)
2DI Digital input
3L-Power supply (-)
4C/QCommunication signal, which supports SDCI (IO-Link) or SIO (standard input/output)
5N/ANot Connected

The C/Q pin for the IO-Link ports in SIO mode for all models:

  • DI – sinking input

    The DI pin on the IO-Link ports for all models is a sinking input.

  • DO – PNP/NPN (push/pull) output

The following table provides definitions of the terminology used above.

TermDefinition
PNP outputIs an output that can source current. That is; the (+) side of the device is connected to the output and the (-) side of the device is connected to (-) of the supply. The device is powered when the output LED is on.
NPN outputIs and output that sinks current. That is: the (-) of the device is connected to the output and the (+) side of the device is connected to (+) side of the supply. The device is powered when the output LED is off.

Sinking input

Sinks current into the IO-Link Master so a positive voltage will cause the input to turn on.
[Note]
Note

Using NPN with inputs is not correct as NPN described an output situation – however some vendors describe their inputs as accepting a certain type of sensor output - so in this case a sinking input will accept a PNP output sensor.

This table provides information that you may need regarding the IO-Link connectors. The IO-Link Master Library for EtherNet/IP and Modbus/TCP contains specifications for power sharing/budgeting L+/L-.

Current and PowerValue
Maximum C/Q Current:200mA
Port 1 - Maximum L+/L- Current Output1.6A
Ports 2-8 - Maximum L+/L- Current Output500mA
C/Q and DI Input

Maximum (L+)

Minimum (L-)

Power Input

+0.5VDC

-0.5VDC

SDCI (IO-Link) Transmission Rates:

COM1: 4.8Kbps

COM2: 38.4Kbps

COM3: 230.4Kbps

[Note]
Note

IO-Link ports must have an approved cable or protective cover attached to the port guarantee IP67 compliance


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