Page 191 - PHU_User Manual_EN_Rev A

COMMUNICATION INTERFACE

be the same on all units before any multiple
unit connection can be established.
Example

2. Connect the first unit’s IN port to a PC via
RS232 or RS485 serial cable.
Use the serial cables supplied in the PHU-232 or
PHU-485 connection kit.
3. RS232 mode: Plug in intermediate connector to
the OUT port on the first unit.
RS485 mode: Two 120 Ω terminal resistor
should be added to the PC output.
Then using the slave serial link cable (black
plug) to connect intermediate connector to the
IN port of the second unit.
Connect all the remaining units in the same
fashion until all the units have been daisy-
chained together.
Terminate the OUT port of the last unit with the
intermediate connector included in the PHU-
232 or PHU-485 connection kit.

RS232

RS485

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