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14.1.3 Serial Communication Configuration

14.1.3 Serial Communication Configuration

Please note that Canvas can still communicate with these devices via Modbus if the specific protocol necessary for a given device is unavailable. For more information on a specific device type, refer to the Supported Communication Drivers section.

Once a new Serial I/O device has been added successfully, the three sections for configuration will appear as follow:

The General configuration page will appear once a new Serial I/O device has been added successfully. An additional configuration is below the General configuration section and will differ based on the device protocol selected.

Please refer to the following for additional information:

General Configuration

Please know that general configuration will appear regardless of the selected Connection Type and Device Type.

 

Item

Description

Item

Description

Device Name

Allows the user to assign a name for the selected I/O device.

Device Protocol

Allows the user to select a protocol for a device.

Timeout (ms)

The maximum time to wait with no response before assuming a communication failure.

Retry Count

Set the number of retries for sending a frame when communication fails.

Swap String

Swaps the upper and lower bytes of string word data.

String Encoding

Specifies the encoding method for reading and writing string values stored on the device. This option can be overridden for individual tags in the Edit Tag menu.

String Encoding Method

When an invalid character is encountered, the gateway will do one of the following:

  • Replace the character with "?".

  • Skip the character and continue with the next one.

  • Stop the string and truncate any remaining characters. This option can be overridden for individual tags in the Edit Tag menu.

Serial Port

Select a serial communication port for the Xpanel.

COM1: RS422/485
COM2: RS232-C
COM3: RS232-C (10”/12”/15” Only)

Baudrate

300-230400 bps is supported. The range may vary according to the I/O device.

Parity

Select the same parity (None, Even, Odd) as the device.

Data Bits

Select the same data bit setting (7 Bits, 8 Bits) as the device.

Flow Control

The amount of data being transmitted to itself using the serial communication method can be turn On, Off, or Control.

Stop Bits

Select the same stop bit setting (1-Bit or 2-Bit) as the device.

Additional Configuration - Device Specific

Modbus RTU

 

Item

Description

Item

Description

Swap 16

Denotes whether to swap the order of the BYTEs within each WORD when reading/writing INTEGER types with this device.
If enabled, Gateway will read/write 0xABCD as 0xDCAB for tags with an integer type.

Swap 32

Denotes whether to swap the order of the WORDs within each DWORD when reading/writing INTEGER types with this device.
If enabled, Gateway will read/write 0xAABBCCDD as 0xCCDDAABB for tags with an integer type.

Swap 64

Denotes whether to swap the order of the DWORDs within each QWORD when reading/writing INTEGER types with this device.
If enabled, Gateway will read/write 0xAAAABBBBCCCCDDDD as 0xCCCCDDDDAAAABBBB for tags with an integer type.

Swap String

Denotes whether to swap the order of the BYTEs within each WORD when reading/writing STRING types with this device.
If enabled, Gateway will read/write 0xABCD as 0xDCAB for tags with the string type.

Swap Float 16

Denotes whether to swap the order of the BYTEs within each WORD when reading/writing float (FLOAT32) types with this device.
If enabled, Gateway will read/write 0xABCD as 0xDCAB for tags with the float type.

Swap Float 32

Denotes whether to swap the order of the WORDs within each DWORD when reading/writing float (FLOAT32) types with this device.
If enabled, Gateway will read/write 0xAABBCCDD as 0xCCDDAABB for tags with the float type.

Swap Double 16

Denotes whether to swap the order of the BYTEs within each WORD when reading/writing double (FLOAT64) types with this device.
If enabled, Gateway will read/write 0xABCD as 0xDCAB for tags with the double type.

Swap Double 32

Denotes whether to swap the order of the WORDs within each DWORD when reading/writing double (FLOAT64) types with this device.
If enabled, Gateway will read/write 0xAABBCCDD as 0xCCDDAABB for tags with the double type.

Swap Double 64

Denotes whether to swap the order of the DWORDs within each QWORD when reading/writing double (FLOAT64) types with this device.
If enabled, Gateway will read/write 0xAAAABBBBCCCCDDDD as 0xCCCCDDDDAAAABBBB for tags with the double type.

Mitsubishi MELSEC Serial

 

Item

Description

Item

Description

Frame Type

Frame Type is used to verify that data in a packet was transmitted/received correctly. Only 3C is supported.

Station Configuration

This configuration page can be accessed by clicking Tools > I/O Device Editor… > select serial device, then click Station.

Item

Description

Station Name

Enter the station name for the I/O device.

Station Number

Set the station ID. It must match the target device’s station ID.

 

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