Moxa Technologies user manual NE-4100 Series User’s ManualDIO Commands, Reading Multiple DIOs

NE-4100 Series User’s ManualDIO Commands

C code example:
void WriteSingleDIO(int port, int mode, int status)
{
DIOPacketStruct packet;
packet.header.command = 2;	// write single DIO command
packet.header.version = 2;	// DIO protocol version
packet.header.length = 3;	// data length
packet.data[0] = (char)port;	// number of the DIO
packet.data[1] = (char)mode;	// DIO mode
packet.data[2] = (char)status;	// DIO status;

send(SocketFd, (char *)&packet, sizeof(DIOHeaderStruct)+3, 0); //Send TCP packet //Process the returned data here

}

3. Reading Multiple DIOs

Parameter:

Command code: 5(hex)

Version: 2(hex)

Command status: doesn’t matter

Length of data: 2(hex); represents two bytes.

data[0]: Number of the DIO you wish to access first.

data[1]: The last number of the DIO you wish to access. Return:

Command Status : Check the Command Status code on the previous page.

Length of data: (end-start+1)*2

data[0]: mode of start DIO

data[1]: status of start DIO

data[2]: mode of (start+1) DIO

data[3]: status of (start+1) DIO ….

data[(end-start)*2]: mode of end DIO

data[(end-start)*2+1]: status of end DIO

C code example:
BOOL	ReadMultipleDIO(int start, int end, int *mode, int *status)
{	DIOPacketStruct packet;
	packet.header.command = 5;	// Read Multiple DIO Commands
	packet.header.version = 2;	// DIO protocol command version
	packet.header.length = 2;	// data length
	packet.data[0] = start;	// start of the DIO number
	packet.data[1] = end;	// end of the DIO number

send(SocketFd, (char *)&packet, sizeof(DIOHeaderStruct)+2, 0); //Send TCP packet //Process the returned data here

return TRUE;

}

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