Matrix Cosec Door - Step 7: Connecting to the RS-485 Bus; RS-485 Linking of COSEC PANEL DOORS

Refer the reader installation procedure for proper power
connection.
Step 7: Connecting the DOOR Controller to the RS-485 Bus
Door Controllers are linked together through their RS-485
Loop IN and Loop Out terminals or the Ethernet port in the
event of using the TCP/IP connectivity option.
The maximum communication loop length in the case of an
RS485 option with the appropriate cable is 1.2 kilometers
(4,000 feet) from the last controller to the workstation. The
RS-485 communication loop should be wired with Ethernet
Category 3 double twisted pair network cable (see cable
specifications Belden 1227A or equivalent). The RS-485 loop
can operate at 115,200 baud, under normal conditions.
To link COSEC PANEL DOORs:
1. Connect the incoming RS-485 cable to the Loop IN A and
B terminals (33 and 34 respectively). The outgoing
RS485 conductors will connect to the Loop Out A and B
terminals (36 and 37 respectively).
PANEL D O O R PANEL DOORPANEL
AB
S
h
i
e
l
d
AB S
h
i
e
l
d
AB S
h
i
e
l
d
RS485 Loop In
RS485 Loop Out
A
B
A
B S
h
i
e
l
d
A
B S
h
i
e
l
d
RS485 Loop In
RS485 Loop Out
• For the last door controller in the RS485 loop, push
the SW3 switch to the ON position to enable the end-