/// <summary>
/// Reads the Device Information by using the function code (0x2b / 0x0e). The methods sends as many messages as needed to read the whole data.
/// </summary>
/// <param name="deviceAddress">Address of the modbus device.</param>
/// <param name="deviceIdCode">Device id code to read.</param>
/// <param name="timeout">Timeout for response in milli seconds.</param>
/// <returns>Returns an array with all device information.</returns>
/// <remarks>
/// Look at http://www.modbus.org/docs/Modbus_Application_Protocol_V1_1b3.pdf for more details.
/// </remarks>
public virtual DeviceIdentification[] ReadDeviceIdentification(byte deviceAddress,
ModbusConformityLevel deviceIdCode,
int timeout = 2000)
{
var moreFollows = true;
var objectId = ModbusObjectId.VendorName;
var values = new ArrayList();
while (moreFollows)
{
var v = this.ReadDeviceIdentification(deviceAddress, deviceIdCode, ref objectId, out moreFollows, timeout);
for (var i = 0; i < v.Length; i++)
{
values.Add(v[i]);
}
}
return((DeviceIdentification[])values.ToArray(typeof(DeviceIdentification)));
}
/// <summary>
/// Reads the Device Information by using the function code (0x2b / 0x0e)
/// </summary>
/// <param name="deviceAddress">Address of the modbus device.</param>
/// <param name="deviceIdCode">Device id code to read.</param>
/// <param name="objectId">Object id to start at. Receives the next object id to read from if moreFollows is set to true.</param>
/// <param name="moreFollows">Receives true if there is more information to read.</param>
/// <param name="timeout">Timeout for response in milli seconds.</param>
/// <returns>Returns an array with all device information.</returns>
/// <remarks>
/// Look at http://www.modbus.org/docs/Modbus_Application_Protocol_V1_1b3.pdf for more details.
/// </remarks>
public virtual DeviceIdentification[] ReadDeviceIdentification(byte deviceAddress, ModbusConformityLevel deviceIdCode, ref ModbusObjectId objectId, out bool moreFollows, int timeout = 2000)
{
object telegramContext = null;
[email protected](deviceAddress, (byte)ModbusFunctionCode.ReadDeviceIdentification, 3,
this.buffer, out var telegramLength, out var dataPos, false, ref telegramContext);
this.buffer[dataPos] = 0x0e;
this.buffer[dataPos + 1] = (byte)deviceIdCode;
this.buffer[dataPos + 2] = (byte)objectId;
this.SendReceive(deviceAddress, ModbusFunctionCode.ReadDeviceIdentification, timeout, telegramLength, -1, telegramContext, ref dataPos);
if (deviceAddress == ModbusConst.BroadcastAddress)
{
moreFollows = false;
return(null);
}
moreFollows = this.buffer[dataPos + 3] != 0;
objectId = (ModbusObjectId)this.buffer[dataPos + 4];
var cnt = this.buffer[dataPos + 5];
var values = new DeviceIdentification[cnt];
dataPos += 6;
for (var i = 0; i < cnt; i++)
{
var v = new char[this.buffer[dataPos + 1]];
for (var n = 0; n < v.Length; ++n)
{
v[n] = (char)this.buffer[dataPos + 2 + n];
}
values[i] = new DeviceIdentification {
ObjectId = (ModbusObjectId)this.buffer[dataPos],
Value = new string(v)
};
dataPos += (short)(2 + v.Length);
}
return(values);
}
/// <summary>
/// Reads the Device Information by using the function code (0x2b / 0x0e)
/// </summary>
/// <param name="deviceAddress">Address of the modbus device.</param>
/// <param name="deviceIdCode">Device id code to read.</param>
/// <param name="objectId">Object id to start at. Receives the next object id to read from if moreFollows is set to true.</param>
/// <param name="moreFollows">Receives true if there is more information to read.</param>
/// <param name="timeout">Timeout for response in milli seconds.</param>
/// <returns>Returns an array with all device information.</returns>
/// <remarks>
/// Look at http://www.modbus.org/docs/Modbus_Application_Protocol_V1_1b3.pdf for more details.
/// </remarks>
public virtual DeviceIdentification[] ReadDeviceIdentification(byte deviceAddress, ModbusConformityLevel deviceIdCode, ref ModbusObjectId objectId, out bool moreFollows, int timeout = 2000)
{
short telegramLength;
short dataPos;
object telegramContext = null;
_Interface.CreateTelegram(deviceAddress, (byte)ModbusFunctionCode.ReadDeviceIdentification, 3,
_Buffer, out telegramLength, out dataPos, false, ref telegramContext);
_Buffer[dataPos] = 0x0e;
_Buffer[dataPos + 1] = (byte)deviceIdCode;
_Buffer[dataPos + 2] = (byte)objectId;
SendReceive(deviceAddress, ModbusFunctionCode.ReadDeviceIdentification, timeout, telegramLength, -1, telegramContext, ref dataPos);
if (deviceAddress == ModbusConst.BroadcastAddress)
{
moreFollows = false;
return null;
}
moreFollows = _Buffer[dataPos + 3] != 0;
objectId = (ModbusObjectId) _Buffer[dataPos + 4];
byte cnt = _Buffer[dataPos + 5];
var values = new DeviceIdentification[cnt];
dataPos += 6;
for (int i = 0; i < cnt; i++)
{
var v = new char[_Buffer[dataPos + 1]];
for (int n = 0; n < v.Length; ++n)
{
v[n] = (char) _Buffer[dataPos + 2 + n];
}
values[i] = new DeviceIdentification
{
ObjectId = (ModbusObjectId) _Buffer[dataPos],
Value = new string(v)
};
dataPos += (short)(2 + v.Length);
}
return values;
}
/// <summary>
/// Reads the Device Information by using the function code (0x2b / 0x0e). The methods sends as many messages as needed to read the whole data.
/// </summary>
/// <param name="deviceAddress">Address of the modbus device.</param>
/// <param name="deviceIdCode">Device id code to read.</param>
/// <param name="timeout">Timeout for response in milli seconds.</param>
/// <returns>Returns an array with all device information.</returns>
/// <remarks>
/// Look at http://www.modbus.org/docs/Modbus_Application_Protocol_V1_1b3.pdf for more details.
/// </remarks>
public virtual DeviceIdentification[] ReadDeviceIdentification(byte deviceAddress,
ModbusConformityLevel deviceIdCode,
int timeout = 2000)
{
bool moreFollows = true;
var objectId = ModbusObjectId.VendorName;
var values = new ArrayList();
while (moreFollows)
{
var v = ReadDeviceIdentification(deviceAddress, deviceIdCode, ref objectId, out moreFollows, timeout);
for (int i = 0; i < v.Length; i++)
{
values.Add(v[i]);
}
}
return (DeviceIdentification[]) values.ToArray(typeof (DeviceIdentification));
}
