R1 Port Small Dip Switches; 4.4.1 Rs-485 Port; Figure 9: Bias Resistor Dip Switches & Eol - SMC Sierra Monitor FS-QS-1010 Quickserver Start-Up Manual

4.4

R1 Port Small DIP Switches

Gently remove the QuickServer enclosure to access the small DIP switches for the R1 Port.

4.4.1 RS-485 Port

NOTE: The following Sections only apply to QuickServer models FS-QS-1XX0 or all
non-LonWorks models.
•
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
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 QuickServer 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
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 9: Bias Resistor DIP Switches & EOL
Figure 9 for the orientation of switch positions referenced below.
Page 16 of 60
QuickServer Start-Up Guide
Bias Resistor Switch
End of Line Switch
Figure 9 for the orientation of