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Omron NT20S User Manual
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56
Connection
to a PC by the NT Link (1:N)
Section 2-6
S
RS-422A connection, RS-422A at the PC side
C200HX/HG/HE
(End connection)
RS-232C/RS-422A
converter
unit,
type NT
-AL001
RS-232C/RS-422A
converter unit,
type NT
-AL001
RS-232C/RS-422A
converter unit,
type NT
-AL001
(End connection)
(
)
T
otal cable length: 500 m
RS-422A
cable (
)
RS-232C cable
(max. 2 m)
RS-232C cable
(max. 2 m)
RS-232C cable
(max. 2 m)
RS-422A
cable (
)
NT20S
NT20S
NT20S
(Communication board)
RS-485 connection, RS-485 at the PC side
C200HX/HG/HE
(End connection)
RS-232C/RS-422A
converter
unit,
type NT
-AL001
RS-232C/RS-422A
converter unit,
type NT
-AL001
RS-232C/RS-422A
converter unit,
type NT
-AL001
(End connection)
(
)
T
otal cable length: 500 m
RS-485
cable (
)
RS-232C cable
(max. 2 m)
RS-232C cable
(max. 2 m)
RS-232C cable
(max. 2 m)
RS-485
cable (
)
NT20S
NT20S
NT20S
(Communication board)
74
76
Table of Contents
Table of Contents
8
Default Chapter
12
About this Manual
12
Precautions
14
1 Intended Audience
15
2 General Precautions
15
3 Safety Precautions
15
Section 1 Functions of the Nt20S
20
Functions of the NT20S
20
Role and Operation of NT20S
21
Operations of NT20S
22
Functions of NT20S
23
Features
23
Principal Functions of NT20S
25
Comparison between NT20S and NT20M
26
Differences between the NT20S-ST121-EV3 and NT20S-ST122-V1
27
Displays
28
System Configuration
29
Host Link/Nt Link (1:1)/C200H Direct Systems
29
NT Link (1:N) System
30
Direct Connection Function
31
NT Link
32
C200H Direct Communication
33
Communications with PC by Direct Connection
34
Functions of the Allocated Bits and Words
34
Communications by RS-232C
37
Before Operating
38
Section 2 Hardware Settings and Connections
40
Hardware Settings and Connections
40
Description of Parts and Settings
41
Description of Parts
41
Rear View
42
Operation Status DIP Switch Settings
43
Setting the Communication Condition Setting Switches (NT20S-ST122-V1 Only)
44
Installation
46
Installation Environment
46
Installation to the Operation Panel
47
Power Supply Connection
48
Connecting to the Support Tool
50
Connection to a PC by the Host Link
51
Compatible Pcs
51
Connecting the NT20S
53
PC Switch Settings
55
Connection to a PC by the NT Link
64
Compatible Pcs
64
Connecting the NT20S
65
PC Switch Settings
66
Connection to a PC by the NT Link (1:N)
68
Compatible Pcs
68
Connecting the NT20S Units
68
PC Switch Settings
76
Communicating with the PC Using C200H Direct Communication
77
Applicable PC Units
77
Connection Method
78
Switching the Power ON/OFF When Using C200H Direct Communication
81
Host Connections by RS-232C
82
Connector Pin Arrangement
82
Host Computer Communication Settings
82
Section 3 System Menu Operation
84
System Menu Operation
84
Operation Flow by the System Menu
85
Starting the NT20S
86
Changing the System Settings Etc
86
Operation Modes and the System Menu
87
System Menu and the Operation Modes
87
Menu Tree
88
Operations with the System Menu
89
Initializing Memory
91
Initialization by Using the System Menu
91
Initialization by Using the DIP Switch (Forced Initialization)
93
Setting the Conditions of Communications with the Host by Using the Memory Switches
94
Selecting the Host Communication Method (NT20S-ST121-EV3 Only)
97
Selecting the Host Link Communication Speed (NT20S-ST121-EV3 Only)
98
Selecting Unit Numbers (NT20S-ST121-EV3 Only)
99
Setting RS-232C Communication Conditions (NT20S-ST128)
101
Selecting the Automatic Reset Function
103
Registering the Screen Data
105
Starting the Operation
109
Various System Settings
110
Setting the Key Press Sound
110
Using the Buzzer
111
Backlight off Function
113
Support Tool Mode Setting (NT20S-ST121-EV3/ST122-V1 Only)
114
Lamp Bit Control (NT20S-ST128)
116
System Maintenance
118
I/O Check
118
Checking the PT Setting
126
Checking the NT20S DIP Switch Settings
128
Section 4 Nt20S Functions and Operation
130
NT20S Functions and Operation
130
Creating and Transmitting Screen Data
131
Setting the Support Tool for Use with the NT20S
131
Creating Screen Data
132
Outline of Functions
137
NT20S Screen
137
Characters and Figures Which Can be Displayed
138
Communications with the Host
139
Screen Display
141
Classification of Screens
141
Screen Attributes
144
Memory Tables
145
Character-String Memory Table
145
Numeral Memory Table
146
Bar Graphs
148
Bar Graph Functions
148
Lamps
152
Lamp Functions
152
Touch Switches
155
Functions of Touch Switches
156
Screen Switching Function
157
System Key Functions
158
Numeral Setting
159
The Numeral Setting Function
159
Types of Numeral Setting
161
Creating Numeric Keys
162
Using Numeric Keys
164
Using the Thumbwheel Type of Numeral Setting (Ver.5 Direct Connection Only)
166
Settings for Numeral Settings
167
Section 5 How to Use the Host Link/Nt Link
170
How to Use the Host Link/Nt Link
170
Overview of Direct Connection Operations
171
Allocatable Bits and Words
171
Equipment and Settings Used in this Section
171
NT20S Status Control and Notification to PC
172
Switching the Screen Display
176
Notifying the Display Screen to the PC (to Display the Number of Currently Displayed Screen)
179
Memory Tables and Bar Graphs
182
Displaying the Contents of Allocated Words of Memory Tables
186
Changing Displayed Numerals or Character Strings (Changing the Contents of Allocated Words
188
Changing Displayed Numerical Values or Character Strings (Changing the Contents of Allocated Words
190
Copying the Memory Table
193
Upgrading Bar Graphs (Changing the Contents of Allocated Words)
196
Lamps, Touch Switches, Numeral Setting
197
Allocation Bits and Display of Lamps
197
Turning on (Lit) and off (Unlit) the Lamps (Changing the Contents of Allocated Bits)
198
Allocated Bits, and Display, of Touch Switches
200
Lit (Flashing) and Unlit Touch Switch Statuses (Changing the Status of Allocated Bits)
202
Notifying the Host that a Switch Has Been Pressed (Determining Touch Switch Status)
202
Notification of Numbers to the PC
207
NT20S Status Control
210
Controllable NT20S Functions
210
How to Control NT20S Functions
213
Notification of the Operating Status to the PC
215
(Determining the NT20S Operating Status)
215
Notification of the Operating Status to the PC (Determining the NT20S Operating Status)
215
Ascertainable NT20S Statuses (Notified Operating Statuses)
215
Reading the NT20S Operating Statuses
216
Section 6 Using the Rs-232C
218
Using the RS-232C
218
Table of Commands
219
RS-232C Communications
220
Communication Procedure
220
Precautions
222
Screen Display
223
Memory Tables
224
Lamps, Touch Switches, Numeral Setting
227
Notification and Control of Touch Switches
227
Notification of Numeral Setting Input and Touch Switch Status
231
Controlling the NT20S Status
233
Terminal Commands
235
Key to Programs
241
Use of Programs
241
Example Program
242
Troubleshooting and Maintenance
254
Hardware Faults
255
Responding to Displayed Error Messages
256
Maintenance of the NT20S
258
Inspection and Cleaning
260
Appendices
262
Specifications
262
Performance Specifications
263
Dimensions
267
Handling the RS-232C/RS-422A Converter Unit
268
NT20S Installation Environment
270
NT20S Internal Processing
271
Function Restrictions Depending on the Support Tool
274
Method for Making the Cable for Connection to the Host
275
Making the Cable for Connection to the Support Tool
287
Connecting to an RS-232C/RS-422A Converter Unit (1:1)
288
Model List
290
Option List
295
PC Memory Map
297
Special Characters
298
Index
300
Revision History
306
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Omron NT20S Specifications
General
Brand
Omron
Model
NT20S
Category
Touch terminals
Language
English
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