Yaskawa F7 Modbus - Manual (Page 4)

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Table of Contents
Chapter 1 Connections........................................................................ 1-1
Connection Check Sheet ................................................................................... 1-1
Verify Operation ................................................................................................. 1-2
F7U Drive Connections ...................................................................................... 1-3
Serial Network Connections............................................................................... 1-4
Communications Parameters............................................................................. 1-6
Operation Method and Frequency Reference.................................................... 1-8
Verify Communications ...................................................................................... 1-9
Chapter 2 Message Formats ............................................................... 2-1
Protocol .............................................................................................................. 2-1
Read Multiple Registers – Function Code 03H .................................................. 2-2
Write Single Register – Function Code 06H....................................................... 2-4
Loop-Back Test – Function Code 08H................................................................ 2-6
Write Multiple Registers – Function Code 10H .................................................. 2-8
No Response ................................................................................................... 2-10
Error Codes...................................................................................................... 2-10
CRC-16 Calculations........................................................................................ 2-11
Chapter 3 Troubleshooting Serial COM ............................................. 3-1
General Information ........................................................................................... 3-1
RS422/RS485 Communications ........................................................................ 3-4
RS422/RS485 Self-Test ..................................................................................... 3-7
Chapter 4 F7U Drive Parameters ........................................................ 4-1
Command Registers (Read / Write) ................................................................... 4-1
MODBUS TCP/IP DPRAM Interface (Read / Write)........................................... 4-2
Simultaneous Broadcast Registers (Write only)................................................. 4-4
Monitor Registers (Read only) ........................................................................... 4-5
Parameters (Read/Write) ................................................................................... 4-8
ENTER/ACCEPT Command (Write Only)........................................................ 4-24
Parameter Dependencies ................................................................................ 4-25
Chapter 5 User Notes .......................................................................... 5-1
User Parameter Settings.................................................................................... 5-2
Hex/Dec Conversion Table............................................................................... 5-13