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INSTALLATION MANUAL
DGM4D
Smart Card Access Control 4 door controller
G ] ELECTRICAL WIRING DIAGRAM: NETWORKED CONTROLLERS
You can connect up to 5 controllers on the same RS485 bus so they function in network. They are connected
as shown below, with one 120 ohm shielded twisted pair (Norm EIS-485). Each controller must be
minimum 2 meters from another controller and at maximum total length 1 kilometre.
Controller 3
Controller 2
Controller 1
Notes:
Jumpers JP1 and JP2 must only be positioned on the first and last controller of the network.
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RS485 B
RS485 A
RS485 B
RS485 A
JP1
JP2
Activation
of terminal
resistances
Controller 3
RS485 A
RS485 B
Controller 4
RS485 A
RS485 B
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