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How to wire SCADAPack 32 4-wire RS-485 COM1 to device with 2-wire RS-485 interface?

Serial port COM1 on the SCADAPack 350 is dedicated 2-wire RS-485 serial communication port.
Wiring diagram for SCADAPack 32 and SCADAPack 350 communication through RS-485 COM ports is shown below.

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