xii
Write data range 7-13
Write conditions 7-13
7 - 4 Definition of Word Addresses 7-13
7 - 5 Numerical Representation in the Application Layer 7-14
RS and WS commands 7-14
RD, WD, RU, and WU commands 7-14
7 - 6 List of Termination Codes 7-15
7 - 7 Reception and Transmission Timing 7-17
Time specifications for instruction and response messages 7-17
RS-485 driver control timing specifications 7-17
7 - 8 Precautions for Creating Communication Programs for the Master Station 7-18
Communication program example 7-18
Chapter 8. Modbus Communication Function 8-1
8 - 1 Overview of Communications
8-1
Features 8-1
Configuration 8-1
Communication procedure 8-2
Message Structure 8-3
8 - 2 Message Structure 8-3
Command types 8-7
Number of data records 8-7
Other specifications 8-8
8 - 3 Description of Commands 8-9
Read command (03H) 8-9
Write command (10H) 8-11
One data record write command (06H) 8-13
8 - 4 Specifications Common with CPL Communication Function 8-14
Definition of word addresses 8-14
Numerical representation 8-14
Specifications of RS-485 driver control timing 8-14
Chapter 9. PLC Link Communication Function 9-1
9 - 1 Overview
9-1
Sample connection 9-1
Supported PLC protocol 9-1
Specifications 9-1
Precautions for the PLC link communication function 9-2
9 - 2 Data Transmission 9-3
Connectible PLCs 9-6
Usable devices 9-6
Completion notification data 9-9
9 - 3 PLC Link Setup 9-10
Common settings 9-10
Transfer settings 9-11
Transfer setting examples 9-12
9 - 4 List of PLC Link Settings 9-17
Common settings 9-17
To Next Page
