BK Precision XLN3640 - Multi-Unit Connection Mode (RS485)

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2.15 Multi-unit Connection Mode (RS485)
The power supply, via the RS485 interface, provides multi-unit control
function for up to 30 units (If connecting more than 10 units, please add a 120Ω
resistor terminator to the last unit as shown in the figure below). Turn on the
system after the connection is made. Press  on the main
page and set CHAIN ON/OFF to ON (Parallel connection will be cancelled).
Set each unit with a different Address (1 - 30). Then by using USB, GPIB, or
LAN, connect the first power supply in the chain to a PC. Now, multiple units
daisy-chained via RS485 can be controlled by one PC by using the commands
specific for multi-unit connection. See “
Remote Communication Protocol”
section for details.