Omron Host Link Master

Omron Host Link implements communication CPU Units that are compatibles with C-mode commands via Host Link. The communications blocks are dynamically created according to the pooling cycle defined on the Access Type for each Device Point.

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Communication Driver Name: OmronHostLink

Implementation DLL: T.ProtocolDriver.OmronHostLink.dll

Protocol: Host Link Interface protocol

Interface: Serial

Equipments supported: CS/CJ/CP-series CPU Unit or NSJ Controller

Communication block size: 29 Word Addresses

Protocol Options: Block Size, Ignore Non-critical error, and Change the PC mode for Writings

PC Hardware requirements: Standard PC with RS232 port

Supported Operands:

Channel Configuration

Protocol Options

Max Block Size: Determines the maximum block size. Default: 29 Word Addresses

Ignore Non-Critical Error: Indicates the driver's behavior when the PLC returns a non fatal error status of 64:

• True: When it returns a Success with the 64 error code, set the tag quality to GOOD 
• False: When it returns a Failed with the 64 error code, set the tag quality to BAD

Change the PC mode for Writings: Indicates if the communication driver should send a command that changes the PLC state to MONITOR in order to perform writing operations. If not, the writing will fail (error code 1). Default = True

Settings

Serial channels:

Default RS-232 serial port configuration

Node Configuration

Station Configuration

Serial (RS232) Channels:

The syntax is: <Device id>

Where:

• • <Device id> is the PLC address

Multi Serial channels:

Syntax: <Port>;<Device id>

Where:

• • <Port> is the COM port for communication (default is COM1)

Ex: COM1;0

Point Configuration   

The syntax for the communication points is: <Memory Area>:<Address>

The Valid memory areas are:

• IR Internal Relay Bit Area
• HR Holding Relay Bit Area
• AR Auxiliary Relay Bit Area
• LR Link Relay Area
• DM Data Memory Area
• PV Timer/Counter Present Value Area
• TC Timer/Counter Status Area

Ex:

• CA:0 Memory Area = CA, Address = 0
• CIO:20 Memory Area = CIO, Address = 20
• EM0:1 Memory Area = Extended Memory 0, Address = 1
• EM6:1 Memory Area = Extended Memory 6, Address = 1

Troubleshoot

The status of the driver's execution can be observed through the diagnostic tools, which are:

• Trace window
• Property Watch
• Module Information

The above tools indicate if the operations have succeeded or have failed. A status of 0 (zero) means communication is successful. Negative values indicate internal driver errors, and positive values indicate protocol error codes.