User Manual
Table Of Contents
- V670 Series
- Introduction
- Contents
- Structure of This Manual
- Chapter 1 Features and System Configuration
- Chapter 2 Specifications and Performance
- Chapter 3 Setting and Installation
- Chapter 4 Functions
- Chapter 5 Control From Host Device
- Chapter 6 How to Use Self-Execution Mode
- Chapter 7 How to Use Programming Console
- Chapter 8 From Startup to Run
- Chapter 9 Characteristic Data Depending on Operating Condition (Reference)
- Appendix
4-1 Communication Designation Function
4-4
In the polling designation (PI), similarly with RI, processing is repeated until the processing is terminated by a command process abort
command (AA). However, no response is made after the communication with one tag is ended. Response is returned by a polling query
(PC) command instead. Use this designation when several controllers are connected to a host device through RS-485 etc. (Commercial
232C/485 converter is required.)
PI designation:
Correct Usage
To use the communication designation of SI, RI and PI, turn ON (trigger input) the dip switch 3-1.
Host → Controller
Host ← Controller
Controller ↔ Tag
External input
PI designation command
Response*
Communication
End of process
Waiting for input
PC command
PC command
(Acceptance)
Response*
(No communication)
Response*
(Result of communication)