Yokogawa JUXTA M Series Digital Limit Alarms MVTK Instrukcja Użytkownika Pobierz pdf (Strona 8)

IM 77J04J11-01E 1st Edition : 2006.08.25-00

Toc-2

3.3 Communication with Higher-level Devices ................................................. 3-20

3.3.1 Example of Communication Program Created Using Visual Basic .. 3-21

3.3.2 Communication with UT Link Module .............................................. 3-25

3.3.3 Communication with Touch Panel ................................................... 3-26

4. Ladder Communication.......................................................................... 4-1

4.1 Overview.......................................................................................................... 4-1

4.2 Commands/Responses at the PLC ................................................................ 4-2

4.2.1 Configuration of Command/Response .............................................. 4-2

4.2.2 Reading Parameters......................................................................... 4-3

4.2.3 Writing Parameters ........................................................................... 4-4

4.2.4 Response Error Codes ..................................................................... 4-5

5. MODBUS Communication...................................................................... 5-1

5.1 Overview.......................................................................................................... 5-1

5.1.1 Configuration of Message ................................................................. 5-2

5.1.2 Specifying D Registers...................................................................... 5-3

5.2 Function Codes ............................................................................................... 5-4

5.2.1 List of Function Codes ...................................................................... 5-4

03 Reads data from multiple D registers ...................................... 5-5

06 Writes data into a D register .................................................... 5-7

08 Performs loop back test .......................................................... 5-9

16 Writes data into multiple D registers ...................................... 5-10

5.2.2 Response Error Codes ................................................................... 5-12

5.2.3 Specifying Broadcast ...................................................................... 5-13

6. Functions and Usage of D Registers ..................................................... 6-1

6.1 Overview of D Registers ................................................................................. 6-1

6.2 Interpretation of D Register Map Table .......................................................... 6-1

6.3 D Register Map Table ...................................................................................... 6-2

6.3.1 Contents of D Registers .................................................................... 6-3

7. Functions and Usage of I Relays ........................................................... 7-1

7.1 Status............................................................................................................... 7-2

Appendix Table of ASCII Codes (Alphanumeric Codes) .........................App.-1

Revision Information ............................................................................................ i

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Yokogawa JUXTA M Series Digital Limit Alarms MVTK Instrukcja Użytkownika Strona 8