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Omron NT21 User Manual

Omron NT21
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4-3SectionCommands/Responses
378
Reference: The maximum number that can be specified for first character string memory
table entry read depends on the setting for numbers of character string table en-
tries (256/1000/2000) made at the Support Tool.
Response
Format
1B 52
[ESC] R
t3 t4
53
St1 d11 d12t2
0D
dn1 dn2
s1
s2 [CR]
* * * * * * * * * * * *
* * * * * * * *
t
1
to t
4
: First character string memory table entry read (4 BCD digits)
0000 to 1999
d1
1
, d1
2
, ..., dn
1
, dn
2
:
Contents of the read character string memory table entries
(2 digits (hexadecimal) corresponding to 1 to 40 characters)
00 to FF
H
(CP437 or ISO 8859-1)
s
1
, s
2
: Checksum (2 hexadecimal digits)
This is always added.
Function
Reads the data of the specified number of character string memory table en-
tries, starting from the specified character string memory table entry.
A maximum of 20 table entries can be read at the same time.
In the response, data is returned in units of one table entry at a time. If reading
of multiple table entries is specified, a number of responses equal to the speci-
fied number of table entries is made. Note that the read character string
memory table entry number is always the number of the data of the response.
4-3-4 Bit Memory Table Read Command (Sent from Host to PT)
Command
Format
1B 52
[ESC]
[CR]
R
0D
42
B
mt1 t2 t4
(l1) (l2) (s1) (s2)
t3
* * * * * * * * * *
* * * * * * * *
m: Checksum present/absent (1 BCD digit)
0: Absent
1: Present
8: Absent (1 table entry read)
9: Present (1 table entry read)
t
1
to t
4
: First bit memory table entry number read (4 BCD digits)
0000 to 0999
l
1
, l
2
: Number of read table entries (2 BCD digits)
00: 100
01 to 99: 1 to 99
When m is 8 or 9, omit this setting.
s
1
, s
2
: Checksum (2 hexadecimal digits)
When m is 0 or 8, omit this setting.
Reference: The maximum number that can be specified for first bit memory table entry read
depends on the setting for numbers of bit memory table entries (256/1000) made
at the Support Tool.

Table of Contents

Other manuals for Omron NT21

Questions and Answers:

Omron NT21 Specifications

General IconGeneral
Display TypeSTN monochrome LCD
Display Size5.7 inches
Resolution320 x 240 pixels
Touch PanelAnalog resistive
Communication PortsRS-232C, RS-422/485
Power Supply24 VDC
Operating Temperature0 to 50°C
Storage Temperature-20 to 60°C
Weight0.8 kg
Memory512 KB

Summary

SECTION 1 General

1-1 Role and Operation of the PT

Introduces the fundamental role and operation of Programmable Terminals (PTs).

1-2 Functions of the NT21, NT31/NT31C and NT631/NT631C

Details the features, comparisons, and principal functions of the NT series terminals.

1-3 System Configuration

Explains the system configuration and peripheral devices connectable to the PTs.

1-4 Communications with the Host

Covers various communication methods for connecting the PT to a host system.

1-5 Communication by Using Memory Links

Describes communication using memory links, a method other than direct connection.

1-6 Before Operating

Provides essential steps and considerations before operating the PT.

SECTION 2 PT Functions

2-1 PT Screens

Describes the PT screens which form the basis of PT functions.

2-2 Areas for Control/Notification

Explains the areas provided for PT control and status notification between PT and host.

2-7 Touch Switches

Details input from the touch panel, allowing screen switching and bit information transmission.

2-11 Alarm List, Alarm History

Explains monitoring host bits and displaying messages or image/library data when a bit changes to ON.

2-12 Inputting Numeric Values

Details the procedure for inputting numeric values using numeral input fields or thumbwheel switches.

2-13 Inputting Character Strings

Explains inputting character strings using touch switches or a bar code reader.

2-14 Recipes

Describes writing and reading data in table format to/from the host, allowing multiple settings to be managed.

2-16 Special Functions

Covers display history, alarm history, resume, screen saver, buzzer, clock, print, contrast/brightness, programming console, and device monitor.

2-17 Device Monitor Function

Details the Device Monitor function for reading/changing PC data and displaying PC error logs.

SECTION 3 How to Use the PT

SECTION 4 Using Memory Link

SECTION 6 Troubleshooting and Maintenance

6-1 Troubleshooting

Guides on actions to take when PT errors occur, by matching symptoms to remedies.

6-2 Responding to Displayed Error Messages

Details how to respond to various error messages displayed on the PT.

Appendix B Compatibility with Screen Data of Other PT Models

Appendix C NT20S and NT30/620 Compatible Modes

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