Omron Host Link PLC Tag

Help Contents


The Omron Host Link PLC Tag PLC Device Tag Icon represents a logical link to an Omron PLC Device using the Host Link protocol.

Configuration Properties

The Omron Host Link PLC Tag supports the configuration properties of the Omron Device, plus these properties:

Property Type Version Description
Channel Reference 1.0 The Omron Serial Communication Channel to the device.
UnitNumber USINT 1.0 The address of the device (0 - 31).
UseMonitorMode BOOL 1.0 Whether the device should be placed in monitor mode (TRUE) or run mode (FALSE) when communication is established.


The Omron Host Link protocol does not allow write operations when the PLC is in RUN mode. To write data to an Omron PLC using the Host Link protocol, set the operating mode of the PLC to MONITOR. Fernhill SCADA can do this for you if you set the UseMonitorMode property to TRUE.

Tag Commands

The Omron Host Link PLC Tag supports the tag commands of the Omron PLC Tag.

Example Configuration

This is an example of an Omron PLC at address 0, communicating via a channel called ".Remote Plant":

Channel.Remote Plant

Relationships to Other Tag Types

The Omron Host Link PLC Tag builds on the features of these tag types:

Further Information

Omron Device Tag

For properties common to all types of Omron device.

Omron Serial Communication Channel

For more information on Omron serial communications channels.

Omron Register Blocks

For more information on the Omron register blocks that can be associated with Omron Host Link PLC Tag tags.

Alarm Conditions

To learn about abnormal conditions in SCADA applications.


For the meaning of terms used in Fernhill SCADA.