### Settings of External Device

The communication settings depend on the External Device (Master) to be used. Please refer to the manual of the External Device for more details.

##### Procedure

1. Set the communication settings of the External Device (Master) as follows.

   Setup Items | Setup Description
   --- | ---
   Wait To Send | 0
   Source port number | Any number
   Destination port number | 502
   Address Mode | Modicon