Omron CQM1H-SCB41 operation manual Not perform, Error Indicator Error details Cause Remedy Code

Board Replacement					Section 9-2
Serial	Indicator	Status	I/O memory	Cause	Remedy
commu-	display	information,
nications		etc.
mode
Serial com-	The	A transmission	The error code in	The PC Setup settings	Review the PC Setup
munica-	COMMj	error occurs.	IR 20100 to	such as the baud rate	settings.
tions mode	indicators		IR 20103 for port 1	and frame format differ	Review the remote node
is set to	are flash-		or IR 20108 to	from those of the remote
					settings and the program
protocol	ing, but the		IR 20111 for port 2	node. The baud rate is
					(including the baud rate,
macro.	Serial		is not 0.	outside the allowable
					frame format, and so
(Contin-	Commu-			range, or there are bit er-
			The settings in the
					on).
ued)	nications		PC Setup do not	rors due to mismatched
	Board can-			stop bits and so on.
			match those of the
	not perform
			remote node.
	commu-
		Data is re-	---	Because response from	Check the settings of the
	nications or
	a commu-	ceived through		the remote node is re-	remote node and review
		CX-Protocol		ceived too fast, the data	programming (i.e., the
	nications
		transmission		received from the time	timing of sending re-
	error
		line trace, but		the data send proces-	sponse data).
	sometimes
		the protocol		sing was completed until
	occurs.
		macros behave		the Send operation was
		as if no data is		completed is discarded.
		received.
		The remote	---	The transmission timing	Set or increase the
		node some-		is too fast for the remote	transmission wait time
		times returns		node to receive data.	(time to await data trans-
		no response to			mission) in step units.
		sent data. Re-
		sponse may be
		received by
		performing re-
		tries.
	The	A transmission	The error code in	The wiring is faulty.	Check the wiring.
	COMMj	error some-	IR 20100 to	The RS-422A/485 port	Turn ON the terminating
	indicators	times occurs.	IR 20103 for port 1
				terminating resistance	resistance of the Serial
	are flash-		or IR 20108 to
				setting is incorrect.	Communications Board
	ing, but the		IR 20111 for port 2
				Adapters such as the	and the last node by us-
	Serial		is not 0.
					ing the terminating resis-
	Commu-			NT-AL001-E are incor-
					tance switch. Turn OFF
	nications			rectly wired, or the termi-
					the terminating resis-
	Board can-			nating resistance setting
					tance of other nodes.
	not perform			is incorrect.
	commu-			A communications error	Use shielded twisted
	nications or			frequently occurs due to	pair cables.
	a commu-			noise and so on.	House the communica-
	nications
					tions cables in a different
	error
					duct from those for pow-
	sometimes
					er lines and so on.
	occurs.
					Review the operating
					environment to prevent
					noise problems.

Note The following table shows the measures to correct error codes provided in IR 20408 to IR 20411 for port 1 and IR 20412 to IR 20415 for port 2.

Error	Indicator	Error details	Cause	Remedy
code
0 Hex	No display	Normal	---	---
1 Hex	No display	Reserved	---	---

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