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Omron NT21 User Manual

Omron NT21
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4-3SectionCommands/Responses
377
Response
Format
Data of 1 word
Data of 1 word
1B 52
[ESC] R
t3 t4
4E
Nt1 l1 l2t2
2C 0D
d11 d1m
,
dn1
dnm
s1 s2 [CR]
* * * * * * * * * * * *
* * * * * * * * * * * *
t
1
to t
4
: First numeral memory table entry number read (4 BCD digits)
0000 to 1999
l
1
, l
2
: Number of read table entries (2 BCD digits)
01 to 20: 1 to 20 table entries
d1
1
to d1
m
, ..., dn
1
to dn
m
:
Contents of the read numeral memory table entries (1 to 8 hex-
adecimal digits)
0 to FFFFFFFF
H
Since initial zeroes are omitted, there may be less than 8 digits.
The data for individual table entries is delimited by commas.
s
1
, s
2
: Checksum (2 hexadecimal digits)
This is always added.
Function
Reads the data from the specified number of numeral memory table entries,
starting from the specified numeral memory table entry.
A maximum of 100 table entries can be read at one time.
In the response, the data of maximum of 20 table entries can be returned at
one time. If reading of more than 20 table entries is specified, multiple re-
sponses are made, each comprising the data of 20 table entries. Note that the
first word address read in the second and later responses will be the word ad-
dress of the first word of the response data.
4-3-3 Character String Memory Table Read Command
(Sent from Host to PT)
Command
Format
1B 52
[ESC]
[CR]
R
0D
53
S
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 character string memory table entry read (4 BCD digits)
0000 to 1999
l
1
, l
2
: Number of read table entries (2 BCD digits)
01 to 20: 1 to 20
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.

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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