Installation
EZ Gateway Start-up Guide
11
3.2
R1 Port Small DIP Switches
Gently remove the FieldServer enclosure to access the small DIP switches for the R1 Port.
•
If more than one RS-485 device is connected to the network, then the field bias resistor switch
needs to be enabled to ensure proper communication.
See
for the orientation of switch
positions referenced below.
o
The default factory setting is OFF (switch position = right side)
o
To enable biasing, turn the bias switch ON (switch position = left side)
NOTE: Biasing only needs to be enabled on one device. The FieldServer has 510 ohm resistors
that are used to set the biasing.
•
If the FieldServer is the last device on the trunk, then the end of line (EOL) termination switch needs
to be enabled.
See
for the orientation of switch positions referenced below.
o
The default factory setting is OFF (switch position = right side)
o
To enable the EOL termination, turn the EOL switch ON (switch position = left side)
Figure 5: Bias Resistor DIP Switches & EOL
Bias Resistor Switch
End of Line Switch
