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Chapter 1 Network Configuration

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(3) Serial interface module (EH-SIO)

1. Communication with Serial communication equipments (General-purpose communication)

User program performs communication with external equipments. “TRNS 9” which is a command for EH-SIO

performs EH-SIO control by EHV-CPU and transmitting and receiving of data.

RS-232C

Bar code reader

Host

RS-422

Figure 1.9 System configuration at general-purpose communication

2. Communication with Modbus protocol support equipments

EH-SIO can communicate by Modbus protocol. Modbus slave equipments can be controlled with communication

by setting EH-SIO to a master.

And I/O of EHV-CPU can be accessed from the host by Modbus protocol.

RS-485

Up to 32 units

Inverter

SJ-200

AC servo

ADAX

-series

Inverter

SJ-200

Figure 1.10 System configuration in controlling equipments supporting Modbus

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RTS WM300 Spezifikationen Seite 11