Varec 8315 Series manual Communications COM, Configuration Function Parameters

8300 8315 L&J Tankway Software Description

4.7Communications (COM)

The Communications point reports the status and controls the operation of the communications interfaces. COM points are automatically created by the system at initialization.

4.7.1Parameters

The database parameters used by the COM point are listed and described below:

Configuration	Function
Parameters
Protocol	Protocol handler assigned to the ComPort. Valid values are:
	Disabled
	RTU Slave
	MODBUS Slave
	TSU Slave
	The defaults are:
	COM 0: RTU Slave - 9600 Baud
	COM 1: Modbus Slave- 9600 Baud
Mode	The Mode parameter is used in conjunction with the Protocol. Different
	protocols will use the Mode in different ways, depending on the needs
	of the protocol.
ComPort	Communications Port number. Valid values are 0-3. The ComPort
	parameter should never be modified by the user.
BaudRate	Baud Rate for communications to either the Host or Slave system. Valid
	values are: 1200, 2400, 2400, 9600, 19200. Changing the BaudRate
	parameter will immediately change the configuration of the ComPort.
	the default is 9600.
ComParams	Defines the number of data bits and the parity used by the com port.
	Examples include:
	8O - 8 Data Bits Odd Parity
	8E - 8 Data Bits, Even Parity
	8N - 8 Data Bits, No Parity
	7O - 7 Data Bits, Odd Parity
	7E - 7 Data Bits, Even Parity
	7N - 7 Data Bits, No Parity
	TI - TIWAY
	The default is ‘8N’.
TimeOut	Time in seconds that indicates a time-out of communications. If no
	Host or Slave communications is received for the length of time
	specified by the TimeOut, the CommStatus parameter will indicate Off
	Line and communications failure processing will take place.
ErrCheck	Error checking used by the protocol. Valid values are:
	LRC - Longitudinal Redundancy Check
	CRC - Cyclical Redundancy Check
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