/** readModbusRegister(ushort startAdd, ushort nReg, ushort []readData)
* Description: public interface -Application calls to read modbus registers
* from slave. SetSlaveInfo first(one time or slave info changes)
* then call this function.
* input: startAdd - start register address
* nReg- number of register to read
* Output: readData- Array of ushort of size atleast nReg
* return: int: -1 on error else number of valid bytes in readData buffer
*/
public int readModbusRegister(ushort startAdd, ushort nReg, ushort [] readData)
{
int retCode = -1;
netwrokInterfaceInfo localInterface = ConfigManager.getNetwrokInterfaceInfo();
if (localInterface.ipAdd == " ")
{
Console.WriteLine("local interface is not selected");
return(retCode);
}
if (nReg > 120)
{
Console.WriteLine(nReg.ToString() + " is more than support 120 Max");
return(retCode);
}
try
{
if (mbTcpClient.modbusInit(localInterface.ipAdd, 0) == 0)
{
if (mbTcpClient.mbOpen(slaveInfo.slaveIPAdd, slaveInfo.tcpPortId) == 0)
{
retCode = mbTcpClient.mbRead(startAdd, nReg, readData);
mbTcpClient.mbClose();
}
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
return(retCode);
}
/** writeModbusRegister(ushort startAdd, ushort nReg, ushort []writeData)
* Description: public interface -Application calls to write modbus registers
* from slave. SetSlaveInfo first(one time or slave info changes)
* then call this function.
* input: startAdd - start register address
* nReg- number of register to write
* Output: writeData- Array of ushort of size atleast nReg with data to be written to device
* return: int: -1 = error and 0= success
*/
public int writeModbusRegister(ushort startAdd, ushort nReg, ushort[] writeData)
{
int retCode = -1;
netwrokInterfaceInfo localInterface = ConfigManager.getNetwrokInterfaceInfo();
if (localInterface.ipAdd == " ")
{
Console.WriteLine("local interface is not selected");
return(retCode);
}
if (mbTcpClient.modbusInit(localInterface.ipAdd, 0) == 0)
{
if (mbTcpClient.mbOpen(slaveInfo.slaveIPAdd, slaveInfo.tcpPortId) == 0)
{
retCode = mbTcpClient.mbWrite(startAdd, nReg, writeData);
mbTcpClient.mbClose();
}
}
return(retCode);
}
static public void setNetwrokInterfaceInfo(netwrokInterfaceInfo ifInfo)
{
nIface = ifInfo;
}
public ConfigManager()
{
nIface = new netwrokInterfaceInfo();
}
