![background image](http://html1.mh-extra.com/html/icp-das-usa/dgw-521/dgw-521_user-manual_3515913010.webp)
The settings for the JP4 jumper are as follows.
The terminals are used for
RS-485 communication.
(factory default)
The terminals are used for
RS-232 communication.
DGW-521 User Manual, Rev. A1.0
10
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