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151

SECTION 5

How to Use the Host Link/NT Link

This Section describes in concrete terms how to use the Host link/NT link/C200H direct communication with the

NT20S-ST121-EV3/ST122-V1.

5-1 Overview of Direct Connection Operations 152. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1-1 Equipment and Settings Used in This Section 152. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1-2 Allocatable Bits and Words 152. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1-3 NT20S Status Control and Notification to PC 153. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1-4 Switching the Screen Display 157. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-1-5 Notifying the Display Screen to the PC

(To Display the Number of Currently Displayed Screen) 160. . . . . . . . . . . . . . . . . . . . . . . .

5-2 Memory Tables and Bar Graphs 163. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2-1 Displaying the Contents of Allocated Words of Memory Tables 167. . . . . . . . . . . . . . . . . .

5-2-2 Changing Displayed Numerals or Character Strings

(Changing the Contents of Allocated Words ... Direct Specification) 169. . . . . . . . . . . . . .

5-2-3 Changing Displayed Numerical Values or Character Strings

(Changing the Contents of Allocated Words ... Indirect Specification) 171. . . . . . . . . . . . .

5-2-4 Copying the Memory Table 174. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-2-5 Upgrading Bar Graphs

(Changing the Contents of Allocated Words) 177. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-3 Lamps, Touch Switches, Numeral Setting 178. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-3-1 Allocation Bits and Display of Lamps 178. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-3-2 Turning ON (lit) and OFF (unlit) the Lamps

(Changing the Contents of Allocated Bits) 179. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-3-3 Allocated Bits, and Display, of Touch Switches 181. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-3-4 Lit (Flashing) and Unlit Touch Switch Statuses

(Changing the Status of Allocated Bits) 183. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-3-5 Notifying the Host that a Switch has been Pressed

(Determining Touch Switch Status) 183. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-3-6 Notification of Numbers to the PC 188. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-4 NT20S Status Control 191. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-4-1 Controllable NT20S Functions 191. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-4-2 How to Control NT20S Functions 194. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-5 Notification of the Operating Status to the PC (Determining the NT20S Operating Status) 196. .

5-5-1 Ascertainable NT20S Statuses (Notified Operating Statuses) 196. . . . . . . . . . . . . . . . . . . .

5-5-2 Reading the NT20S Operating Statuses 197. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Omron NT20S User Manual

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