### Settings of External Device (EH-SIO)

Use the switch on the EH-SIO for communication settings. After setting, assign I/O, and turn ON the power of the External Device again to enable the setting.Use the ladder software (LADDER EDITOR for Windows) for the I/O assignment.

Please refer to the manual of the External Device for more details.

##### Procedure

1. Use the DIP switch on the EH-SIO for communication settings.
   Communication Setting Switch 2 (for Port 2)

   DIP Switch | Settings | Description
   01 | OFF | Speed: 19,200 bps Please refer to the manual of the External Device for more details about other transmission speed settings.
   02 | ON
   03 | ON
   04 | ON
   05 | OFF | Transmission character configuration settings Data Length: 7 bits Stop Bit: 1 bit Parity: Even
   06 | ON
   07 | OFF
   08 | ON | Interface Type: RS422/RS485

2. Ladder program is required for initial settings. Please refer to the manual of the External Device for more details.

NOTE

- Version 2.0 or later of the EH-SIO software supports Procedure 1; version 2.1 or later supports Procedure 2. Furthermore, only EH-CPU548(Ver.E402 or later)/EH-CPU516(Ver.E202 or later) can use EH-SIO.

NOTE

- Bit8 is used for interface selection of Port2 .