Omron CQM1H-SCB41 operation manual Appendix J

V500/V520 Bar Code Reader Protocol Appendix J

Protocol Configuration

The configuration of the V500/V520 Bar Code Reader Protocol is shown below.

Sequence	Communications	Function	Ladder interface
No.	sequence name
			Send word	Receive word
			allocation	allocation
350	BCR read start	Instructs the Reader to start a BCR read.	No	No
351	BCR read stop	Instructs the Reader to stop a BCR read.	No	No
352	Data read	Data read by the Reader is received and	No	Yes
		saved in the receive words.
353	Complete data read	Instructs the Reader to start a read. After	No	Yes
		the data read by the Reader is received
		and saved to the receive words, reading is
		stopped.
354	BCR function write	Writes the operation mode and read func-	Yes	No
	(V500)	tions.
355	BCR function read	Reads the operation mode and read func-	No	Yes
	(V500)	tions.
356	Log data output request	Requests output of log data sent to host.	Yes	Yes
	(V500)
357	Preset data set (V500)	Writes preset data.	Yes	No
358	BCR connection con-	Confirms if the Reader is correctly set.	No	No
	firmation (V500)
359	Log data clear (V500)	Clear log data.	No	No
360	Continuous data read	Performs the following operations repeat-	No	Yes
	(scan) (V500)	edly: starts reading, receives data read by
		the Reader, saves the data to the receive
		words by the scan method.
361	Continuous data read	Performs the following operations repeat-	No	Yes
	(interrupt) (V500)	edly: starts reading, receives data read by
		the Reader, saves the data to the receive
		words by the interrupt method (interrupt
		No.100).
362	BCR initialize	Clears the log, confirms BCR connection,	Yes	No
		and sets BCRs.
363	Continuous data read	Performs the following operations repeat-	No	Yes
	(scan) (V520)	edly: starts reading, receives data read by
		the Reader, saves the data to the receive
		words by the scan method.
364	Continuous data read	Performing the following operations repeat-	No	Yes
	(interrupt) (V520)	edly: starts reading, receives data read by
		the Reader, saves the data to the receive
		words by the interrupt method (interrupt
		No.100).
365	General-purpose com-	Used to send data of a specified data	Yes	No
	mand 1	length, and receive only ACK as the re-
		ceive data.
366	General-purpose com-	Used to send data of a specified data	Yes	Yes
	mand 2	length, and receive ACK together with the
		return of other receive data. The frame for-
		mat of the receive data, however, has to
		contain STX and ETX.

Note Ladder Interface Settings
YES:	User settings are required for the 2nd and 3rd operands of PMCR.
NO:	Send word allocation:	Set a dummy word address for the 3rd operand (D).
	Receive word allocation:	Set the constant 0000 for the 2rd operand (S).

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