FieldTalk Modbus Master Library for .NET

MbusSerialClientBaseopenProtocol Method (String, Int32, Int32, Int32, Int32)

Opens a serial Modbus protocol and the associated serial port with the port parameters configured via properties

Namespace: FieldTalk.Modbus.Master
Assembly: FieldTalk.Modbus.Master (in FieldTalk.Modbus.Master.dll) Version: 2.14.0-eval+fc7d3f12456d1103fd8171fc3bffe59150a224d7

Syntax

C++

Copy

public int openProtocol(
	string portName,
	int baudRate,
	int dataBits,
	int stopBits,
	int parity
)

Public Function openProtocol ( 
	portName As String,
	baudRate As Integer,
	dataBits As Integer,
	stopBits As Integer,
	parity As Integer
) As Integer

public:
int openProtocol(
	String^ portName, 
	int baudRate, 
	int dataBits, 
	int stopBits, 
	int parity
)

Parameters

portName: Type: SystemString
Serial port identifier (eg "COM1")
baudRate: Type: SystemInt32
The port baud rate in bps (1200 - 115200, higher on some platforms)
dataBits: Type: SystemInt32
SER_DATABITS_7: 7 data bits (ASCII protocol only), SER_DATABITS_8: 8 data bits
stopBits: Type: SystemInt32
SER_STOPBITS_1: 1 stop bit, SER_STOPBITS_2: 2 stop bits
parity: Type: SystemInt32
SER_PARITY_NONE: no parity, SER_PARITY_ODD: odd parity, SER_PARITY_EVEN: even parity

Return Value

Type: Int32
BusProtocolErrors.FTALK_SUCCESS on success or error code. See BusProtocolErrors for possible error codes.

Remarks

This function opens the serial port with a specific port settings. After a port has been opened, data and control functions can be used.

Note
The Modbus standard requires two stop bits if no parity is chosen. This library is not enforcing this but it is a recommended configuration.

Reference

MbusSerialClientBase Class

openProtocol Overload

FieldTalk.Modbus.Master Namespace

FieldTalk Modbus Master Library for .NET
Library version 2.14.0

MbusSerialClientBaseAddLanguageSpecificTextSet("LSTEBC4252C_0?cpp=::|nu=.");openProtocol Method (String, Int32, Int32, Int32, Int32)

Parameters

Return Value

Reference

MbusSerialClientBaseopenProtocol Method (String, Int32, Int32, Int32, Int32)