Omron NT31 NT31C External Interface Specifications, Programming Environment, Special Features

SpecificationsAppendix A

External Interface Specifications

Item		Specification
		Conforms to EIA RS-232C
	Serial port A	D-SUB 9-pin connector (female)
Serial communication		+5 V (250 mA max.) output at pin No. 6
	Serial port B	EIA RS-232C or RS-422A/485 (selectable, by memory switch setting)
		D-SUB 25-pin connector (female)
Parallel interface		Conforms to Centronics standard, 20-pin half pitch connector
Expansion interface		Dedicated connector

Note Check that the current capacity of the equipment to be supplied is within 250 mA before using the +5 V output of pin No. 6. The +5 V output of the unit delivers +5 V " 5% and 250 mA maximum.

Programming Environment

Item	Specification
Programming System	Programming support software
Programming Tool	Programming support software: NT-series Support Tool for Windows (Ver. 4.0), by OMRON

Special Features

Item		Specifications
	Three kinds of buzzer sound (continuous, short intermittent, and long intermittent)
	ON:	On reception of a command from the host, display of a screen with a
		buzzer setting, or display of an error screen such as for a receive error.
Buzzer	OFF:	On reception of a command from the host, or display of a screen with
		no buzzer setting.
	Setting:	Set “ON” for “Buzzer Sound” in the memory switch menu, or set
		“ERROR ON” for the buzzer to sound only when an error occurs.
	The buzzer sounds three times in response to prohibited input.
	Touch switches
Touch switch input sound	Input sound: Sounding for 0.2 seconds
	Setting:	Set “ON” for “Key Press Sound” in the memory switch menu.
	- Memory switch setting
	- Self-test functions, such as for the memory and external interface
	- Setting condition confirmation function
Maintenance function	- Communication check function
	- Initialization of internal memory data
	- Display of display/alarm history data
	- Registered data test display function
	- Backup of numeral/character string memory table data in the NT31/NT31C
	- Backup of display/alarm history data
Battery backup	- Backup of calendar and clock setting
	Battery life:	5 years (at 25_C)
	When voltage becomes low: RUN LED lights in orange or red
		The communication flag to the PC (BAT LOW) comes
		ON (1).
	Retains the contents of the numeral/character string memory tables (i.e., they are not
Resume function	initialized) when the power is turned ON, when the NT31/NT31C is reset, and when
	the operation mode is changed.
	Setting:	Set “ON” for “Resume Function” in the memory switch menu.

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