YASKAWA AC Drive V1000 Option SI-EM3/V - Modbus TCP;IP Messaging; Protocol Overview and Commands; Register Access and Data Structure

7 Modbus TCP/IP Messaging
YASKAWA ELECTRIC SIEP C730600 59A V1000 Option Modbus TCP/IP Technical Manual 23
7 Modbus TCP/IP Messaging
 Modbus TCP/IP Overview
The Modbus TCP/IP protocol is essentially the Modbus protocol over an Modbus TCP/IP network. A master controller
(typically a PLC) sends commands to slave devices, which then perform the specified functions and send a response to
the master. The drive using the option has slave functionality.
 Supported Modbus TCP/IP Commands
Table 9 Supported Modbus TCP/IP Commands
 Drive Modbus TCP/IP Option Registers
All of the command registers, monitor registers, and parameters documented in the drive Technical Manual are
accessible via the option.
 High Speed Access Drive Modbus TCP/IP Option Registers
Many of the registers required for control have been specially mapped to provide higher speed access to increase network
performance. Use these registers for the best response times.
All of the drive command registers have been mapped to this high speed access area (Modbus TCP/IP registers 01H to
01FH). In addition, the monitors shown in Table 10 are mapped for high speed access.
Table 10 Drive Registers
Function Code Function Name
03H Read Multiple Registers
06H Write Single Register
10H Write Multiple Registers
17H Read/Write Multiple Registers
Address
(hex)
Drive
Register
(hex)
Description Bit Description
2000 4B
Status Word
(U1-12)
0 During Run
1 During Zero Speed
2 During Reverse Direction
3 During Fault Reset Signal Input
4 During Speed Agree
5 Drive Ready
6Alarm
7Fault
8 During Operation Error (oPE)
9 During Momentary Power Loss
A Motor 2 Selected
B Reserved
C Reserved
D Reserved
E ComRef Status, NetRef Status
F ComCtrl Status, NetCtrl Status
2001 44 Motor Speed Monitor (U1-05)
2002 48 Torque Reference Monitor (U1-09)
2003 F0 PG Count Channel 1
2004 40 Frequency Reference Monitor (U1-01)
2005 41 Output Frequency Monitor (U1-02)
2006 26
Output Current
(0.01 A units for drives set to 11 kW in Heavy or Normal Duty and 0.1 A units for drives set to 15 kW and above.)
2007 4F Terminal A2 Input Level Monitor (U1-14)
2008 46 DC Bus Voltage Monitor (U1-07)
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