Fisher MPX-CD163 Instruction Manual page 77

INTERFACE SPECIFICATIONS
RS485 termination switch settings (RS485 TEAMINATE)
Termination setting
If several multiplexers are being connected together, termination settings must also be made.
Set the RS485 termination switch on the rear panel to ON, and set the termination switch of the last device in the series to ON.
Be sure to set the RS485 termination switches of all devices in between (devices other than the first and last in the series) to OFF.
System controller
POWER RS485
GND
ON A B
12V DC IN ADDRESS
A B
1 2 3
1
0
OFF
TERMINATE
Time lapse VCR
ON
Termination switch
OFF
Note: If the termination settings are not correct, data will be
reflected by either end of the series and this will affect
the transmission of other data, so that the data that is
transmitted to each device will not be correct.