Omron FQM1-MMP21 No-protocolCommunications RS-232CPort, Serial Communications, Section

Serial Communications					Section 6-1
Type	Command			Name	Function
		code
Forced Status	23		01	FORCED SET/RESET	Force-sets, force-resets, or clears the forced status of
					the specified bits.
	23		02	FORCED SET/RESET CANCEL	Cancels the forced status of all force-set and force-reset
					bits.

6-1-2 No-protocol Communications (RS-232C Port)

No-protocol Mode is used to send and receive data using the communications port TXD(236) and RXD(235) I/O instructions in the Coordinator Module lad- der program, without using retry processing, data conversion, branch pro- cessing based on received data, or other communications procedures and without converting the data.

No-protocol mode can be used with the RS-232C and RS-422A ports in the Coordinator Module. Data can be sent or received in one direction only between the Module and the general-purpose external device connected to the RS-232C or RS-422A port.

For example, data can be input from a bar code reader or output to a printer, or parameter data can be sent and received from a host controller.

RS-232C port

FQM1	Coordinator Module	Coordinator Module ladder program
			TXD/RXD
			instructions

No protocol

RS-232C

General-purpose external device

The following table lists the no-protocol communications functions available for the FQM1.

Send/receive	Transfer	Method	Max.	Frame format		Other functions
	direction		amount of
				Start code	End code
			data
Sending data	FQM1 to Gen-	Execute	256 bytes	Yes: 00 to FF	Yes: 00 to FF	• Send delay time
	eral-purpose	TXD(236) in		No: None	CR+LF	(delay between
	external	the program				TXD(236) execution
					None
	device					and sending data
					(Specify recep-
						from specified port):
					tion data size to	0 to 99,990 ms (unit:
					between 1 and	10 ms)
					256 bytes when	• RS and ER signal
					set to none.)
						ON/OFF
Receiving	General-pur-	Execute	256 bytes			Monitoring of CS and
data	pose external	RXD(235) in				DR signals
	device to	the program
	FQM1

129