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Can all 3 RS485 communication ports be used when adding a PM8ECC to a Series 800 Power Meter (PM800) with a remote display adapter.

When the PM8ECC Ethernet Communication Card is added to a Series 800 Power Meter with a remote display
adapter (RDA) the RS485 communication port 2 becomes disabled. Only two RS485 ports (Comm 1 and Comm 3)
can be used simultaneously. Both ports will use the same RS485 address (Device ID). The address can be configured
in the Comm 1 settings on the meter display.
 
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