Why can't I call up the System Menu on Omron NT21 Touch terminals?
If the System Menu cannot be called up, it is possible that Display System Menu under Change System Settings in the System Installer mode is set to Disabled. In the System Installer mode, set Display System Menu to Enabled.
Why aren't some elements displayed on a normal screen of Omron NT21 Touch terminals?
If some elements arranged on a normal screen are not displayed, it could be because the quantity of read data exceeds the stipulated restriction. Check the maximum number of elements, create the screen data again, then transmit all of the screen data in a batch to the PT.
How to fix too faint display on Omron NT21?
If the display is too faint, the contrast may be too high. For the NT31/NT31C or NT631/NT631C, use the system menu to reduce the contrast. For the NT21, use the switches on the back of the PT to increase the contrast.
Why aren't the previously monitored words displayed when Device Monitor is called again on Omron Touch terminals?
The words monitored by Device Monitor are retained even if the Device Monitor is closed, but the information is cleared when the PT is turned OFF or reset. Specify the desired words again. If the cable was disconnected while Device Monitor was being used and then connected to a PC with a smaller data area, the PT will clear any word addresses that aren’t supported in that PC. Check the ranges of data areas in the PC and set word addresses within those ranges.
Why can't I use the Programming Console function on Omron NT21 Touch terminals?
The Programming Console function may be unusable due to several reasons. First, the communication settings might be incorrect; ensure the communication method/communication port is set correctly (With C-series PC: 1:1 NT Link; With CS/CJ-series PC: 1:N NT Link). Second, a Programming Console might be connected; disconnect it, as it's not possible to use both simultaneously with all PCs except CS/CJ-series. Third, the PC may not support the Programming Console function; check your PC model's compatibility. Finally, the system program for other vendor’s PCs has been installed (PC models other than OMRON); install the correct system program for OMRON PCs.
What causes the graph display not to change on Omron NT21?
If the graph display on your Omron Touch terminals is not changing, it is likely that one of the percentage display settings — –100%, 0%, or 100% — is incorrect. Ensure that these values are set in the following relationship: –100% value < 0% value < 100% value.
Why doesn't the screen change when calling Device Monitor from the PPTT status control area on Omron NT21 Touch terminals?
If the screen doesn’t change when the Device Monitor function is called from the PPTT status control area, the issue might be due to the communications protocol setting at the PT not being 1:1 NT Link or 1:N NT Link. Check the memory switches and set the connected PC’s serial port protocol to 1:1 NT Link or 1:N NT Link, and ensure the same protocol is set in the PC. Alternatively, the system program installed in the PT could be for a PC maker other than OMRON; the Device Monitor function only works when connected to an OMRON PC. Verify the system program type and ensure it’s an OMRON Direct Access system program with version 3. or higher.
Why does the PC mode change to MONITOR mode on Omron NT21?
The PC mode changes to MONITOR mode because this is an Omron Touch terminals specification when host link communication is used. When using a PC that can also be connected using the NT link method, use an NT link connection as there is no mode change with the NT link method.
Why can't I input numeric values on Omron NT21?
If you are unable to input numeric values on your Omron Touch terminals, it is likely that the upper/lower (max./min.) limit check for numeric value input is in effect. Check the screen data’s upper/lower (max./min.) limit check setting for numeric value input, and correct it if necessary.
What causes incorrect numeral/text display on Omron NT21?
An incorrect numeral or text display on Omron Touch terminals can stem from several causes. If the memory table entry is allocated words in the host, the display updates according to the host memory contents; avoid allocating words for fixed-value memory table entries in the host. Another cause could be a drop in battery voltage destroying memory table data (NT21 with optional Battery); replace the battery and initialize the memory table. If the resume function is ON, initial screen data memory values won't write to memory tables (NT21 with optional Battery); initialize the memory table or disable the resume function. Lastly, setting two words in a numeral memory table entry for an indirect address can cause issues; set only one word in the numeral memory table entry.
General| Display Type | STN monochrome LCD |
|---|---|
| Display Size | 5.7 inches |
| Resolution | 320 x 240 pixels |
| Touch Panel | Analog resistive |
| Communication Ports | RS-232C, RS-422/485 |
| Power Supply | 24 VDC |
| Operating Temperature | 0 to 50°C |
| Storage Temperature | -20 to 60°C |
| Weight | 0.8 kg |
| Memory | 512 KB |
Introduces the fundamental role and operation of Programmable Terminals (PTs).
Details the features, comparisons, and principal functions of the NT series terminals.
Explains the system configuration and peripheral devices connectable to the PTs.
Covers various communication methods for connecting the PT to a host system.
Describes communication using memory links, a method other than direct connection.
Provides essential steps and considerations before operating the PT.
Describes the PT screens which form the basis of PT functions.
Explains the areas provided for PT control and status notification between PT and host.
Details input from the touch panel, allowing screen switching and bit information transmission.
Explains monitoring host bits and displaying messages or image/library data when a bit changes to ON.
Details the procedure for inputting numeric values using numeral input fields or thumbwheel switches.
Explains inputting character strings using touch switches or a bar code reader.
Describes writing and reading data in table format to/from the host, allowing multiple settings to be managed.
Covers display history, alarm history, resume, screen saver, buzzer, clock, print, contrast/brightness, programming console, and device monitor.
Details the Device Monitor function for reading/changing PC data and displaying PC error logs.
Guides on actions to take when PT errors occur, by matching symptoms to remedies.
Details how to respond to various error messages displayed on the PT.
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