Omron FINS PLC Tag

Introduction

The Omron FINS PLC Tag represents a logical link to an Omron PLC that uses the FINS protocol.

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

Property	Type	Version	Description
Channel	Reference	1.0	A reference to one of these tag types: Omron Serial Channel Tag Omron FINS/TCP Channel Tag Omron FINS/UDP Channel Tag
CModeUnit	USINT	1.0	If the device is connected to a serial channel, this is the Unit number used in the Host Link outer frame.
BridgeMode	BOOL	1.0	True if bridge communications mode is used. False if bridge mode is not used.
NetworkNumber	USINT	1.0	The destination network address of the device (ignored if BridgeMode is False).
NodeNumber	USINT	1.0	The destination node address of the device (ignored if BridgeMode is False).
UnitNumber	USINT	1.0	The destination unit address of the device.

When communicating on serial links, the BridgeMode property defines the type of message sent to the PLC:

When BridgeMode is true, messages sent to the PLC include the full route information. Using this mode you can use the PLC as a gateway to communicate with other PLC Devices on a network.
When BridgeMode is false, messages sent to the PLC do not include the full route information. Using this mode you can only communicate with the PLC.

When BridgeMode is true, messages sent to the PLC are 12 bytes longer than when BridgeMode is false.

The BridgeMode property is ignored if the PLC is connected with an Ethernet connection.

The Omron FINS PLC Tag supports the tag commands of the Omron PLC Tag.

The following example is suitable for an Omron PLC using a serial connection and FINS protocol:

Notes:

The PLC tag references a tag called "Remote Plant" in the same folder as the PLC Tag.
BridgeMode is False, so the NetworkNumber and NodeNumber properties are ignored.

The following example is suitable for an Omron PLC using UDP (Ethernet):

Notes:

The PLC tag references a tag called "Local Plant" in the same folder as the PLC Tag.
BridgeMode is True, so the NetworkNumber and NodeNumber properties are significant.

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

For properties common to all types of Omron device.

For more information on Omron serial communications channels.

To learn about communication channels that support the FINS/TCP protocol.

To learn about communication channels that support the FINS/UDP protocol.

For more information on the Omron register block tags that can be associated with Omron FINS PLC Tag tags.

To learn about abnormal conditions in SCADA applications.

For the meaning of terms used in Fernhill SCADA.