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XT-1 Installation Manual
DIP Switches
Two 8-position DIP switches are available for interface and software configuration. All switches are OFF by
default.
Figure 22 DIP switches S301 (left) and S101 (right)
3.11.1 Interface Configuration DIP Switch (S301)
Position(s)
Description
1-2
RS485 2-wire mode
S301
S301:1 ON = TX+ connected to RX+
ON
S301:2 ON = TX– connected to RX–n
1
8
3
RS485 termination
S301
S301:3 ON = 120 Ω termination between RX+ and RX-.
ON
Termination should be activated at each end of an RS485 chain.
1
8
4-5
RS485 bias
S301
S301:4 ON = 620 Ω pull-up from RX+ to 5 V
ON
S301:5 ON = 620 Ω pull-down from RX- to 0 V
1
8
Bias should be activated at one node in an RS485 chain.
6-8
Wiegand/Magstripe pull-ups
S301
S301:6 ON = 1 kΩ pull-up from D0/CLK to 5 V
ON
S301:7 ON = 1 kΩ pull-up from D1/DATA to 5 V
1
8
S301:8 ON = 1 kΩ pull-up from CL/LOAD to 5 V
Pull-ups should be activated when the reader is connected to an access control
system without built-in pull-ups.
Table 11 Interface Configuration DIP Switch (S301)
3.11.2 Software Configuration DIP Switch (S101)
Position(s)
Description
1
Firmware upgrade mode
S101
S101:1 is used for firmware upgrade. See §4.3 for more information.
ON
1
8
2
Factory defaults
S101
S101:2 is used to restore the reader to factory default settings.
ON
See §4.4 for more information.
1
8
Easy configuration
6-8
S101
S101:6-8 are used for easy configuration of Wiegand/Magstripe and other settings
ON
when using XT-1 with an access control system. See §4.1 for more information.
1
8
Table 12 Software Configuration DIP Switch (S101)
13-111 02, 2014-RO-012, 2014-04-30
Page 20 of 32
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