How To Use The Host Link/Nt Link - Omron NT20S-ST121B-EV3 User Manual

Programmable terminal

Table of Contents

This Section describes in concrete terms how to use the Host link/NT link communications with the NT20.

5-1

Overview of Direct Connection Operations . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1-1

Equipment and Settings Used in This Section . . . . . . . . . . . . . . . . .

5-1-2

Allocatable Bits and Words . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1-3

NT20 Status Control and Notification to PLC . . . . . . . . . . . . . . . . .

5-1-4

Switching the Screen Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1-5

Notifying the PLC of the Display Screen

(to Display the Number of Currently Displayed Screen) . . . . . . . . .

5-2

Memory Tables and Bar Graphs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2-1

Displaying the Contents of Allocated Words of Memory Table Entries

5-2-2

Changing Displayed Numerals or Character Strings

(Changing the Contents of Allocated Words ... Direct Specification)

5-2-3

Changing Displayed Numerical Values or Character Strings

(Changing the Contents of Allocated Words ... Indirect Specification)

5-2-4

Copying Memory Table Entries . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2-5

Upgrading Bar Graphs (Changing the Contents of Allocated Words)

5-3

Lamps, Touch Switches, Numeral Setting . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-3-1

Allocation Bits and Display of Lamps . . . . . . . . . . . . . . . . . . . . . . .

5-3-2

Turning ON (Lit) and OFF (Unlit) the Lamps

(Changing the Contents of Allocated Bits). . . . . . . . . . . . . . . . . . . .

5-3-3

Allocated Bits and Display of Touch Switches . . . . . . . . . . . . . . . .

5-3-4

Lit (Flashing) and Unlit Touch Switch Status

(Changing the Status of Allocated Bits) . . . . . . . . . . . . . . . . . . . . . .

5-3-5

Notifying the Host That a Switch Has Been Pressed

(Determining Touch Switch Status) . . . . . . . . . . . . . . . . . . . . . . . . .

5-3-6

Notification of Numbers to the PLC. . . . . . . . . . . . . . . . . . . . . . . . .

5-4

NT20 Status Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-4-1

Controllable NT20 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-4-2

How to Control NT20 Functions . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-5

Notification of the Operating Status to the PLC

(Determining the NT20 Operating Status) . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-5-1

Ascertainable NT20 Status (Notified Operating Status) . . . . . . . . .

5-5-2

Reading the NT20 Operating Status . . . . . . . . . . . . . . . . . . . . . . . . .