Omron NT631C manual Programming Console Function, Omron

Troubleshooting		Section 7-1
NT631/NT631C	Cause	Remedy
Symptoms
The graph display does not	One of the percentage display set-	Set the −100%, 0%, and 100% values in the following
change.	tings — −100%, 0%, or 100% — is	relationship:
	incorrect.	−100% value < 0% value < 100% value
The trend graph display	The cycle for graph display update	Delete other elements on the same screen as the
does not agree with the	processing is longer than the set	trend graph that are allocated to the host and have a
actual time axis.	sampling cycle.	high update frequency. Or lengthen the sampling
		cycle.
The Programming Console	The communications settings are	Set the communications method as follows when
function cannot be used.	incorrect.	using the Programming Console function.
		• With C-series PLC: 1:1 NT Link
		• With CS/CJ-series PLC:
		1:N NT Link (standard or high-speed)
	A Programming Console is con-	It is not possible to use a Programming Console and
	nected.	the Programming Console function at the same time.
		Disconnect the Programming Console.
	The PLC does not support the Pro-	Not all PLCs support the Programming Console func-
	gramming Console function.	tion. Check the model of PLC you are using. (6-12
		Programming Console Function)
	The system program for other ven-	The Programming Console function can be used only
	dor’s PLCs has been installed. (PLC	when the system program for OMRON PLCs is
	models other than OMRON.)	installed. Install the correct system program.
The Device Monitor func-	The communications settings are not	Set the communications method as follows when
tion cannot be used.	correct.	using the Device Monitor function.
		• With C-series PLCs: 1:1 NT Link or 1:N NT Link
		• With CS/CJ-series PLCs:
		1:N NT Link (standard or high-speed)
	The PLC does not support the Device	Not all PLCs support the Device Monitor function.
	Monitor function.	Check the model of PLC you are using. Refer to 6-13
		Device Monitor Function for details.
	The system program installed in the	The Device Monitor function can be used only when
	PT is for a PLC maker other than	the PT is connected to a PT with the system program
	OMRON.	for OMRON PLCs installed. Install a system program
		that supports the Device Monitor function.
The memory table display	Since the memory table is allocated	When the contents of the memory table are set as a
contents differ from the ini-	to the host memory, the display is	fixed value, do not allocate the memory table to the
tial value set at the Sup-	updated in accordance with the con-	host.
port Tool.	tents of the host memory.
	The battery voltage has dropped and	Replace the battery and execute memory table initial-
	the data in the memory table has	ization. (7-3-1 Replacing the Battery, page 241, and
	been destroyed.	6-4-5 Initializing the Memory Tables, page 141)
	Since ON is set for the resume func-	Execute memory table initialization. (6-4-5 Initializing
	tion, the initial values of the screen	the Memory Tables, page 141)
	data memory are not written to the	If the resume function does not need to be used, use
	memory tables.
		the NT631/NT631C with the resume function OFF.
		(6-9-10 Setting the Resume Function, page 177)
	The numeral memory table is speci-	Calculations are executed continuously while the PT
	fied as the destination for a mathe-	is operating and the calculation results are automati-
	matical table’s results.	cally written to the memory table. Specify another
		numeral memory table or a word in the host.

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