Yaskawa Modbus TCP/IP SI-EM3D Bedienungsanleitung PDF herunterladen (Seite 28)

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 6 Supported Modbus TCP/IP Commands

Function Code Function Name

03H Read Multiple Registers

06H Write Single Register

10H Write Multiple Registers

17H Read/Write Multiple Registers

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 7 are mapped for

high speed access.

7 Modbus TCP/IP Messaging

YASKAWA TOEP YAICOM 18A 1000-Series Option Dual-Port Modbus TCP/IP SI-EM3D Installation Manual

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Yaskawa Modbus TCP/IP SI-EM3D Bedienungsanleitung Seite 28