2-5. Jumpers
2/99 2-25 U3-1021
Westinghouse Proprietary Class 2C
2-5. Jumpers
Wire jumpers may be installed in the Base Unit terminal block to select different
Link Controller options.
Table 2-6 describes the options and the jumpers used to
select those options.
Table 2-6. LC Jumper Options
Option Jumper Positions Description
Baud Rate
(for J1 Programming
Port)
B7 and B8 connected Baud rate = 9600
B7 and B8 not connected Baud rate = 19200 (default)
Boot LC module C7 and C8 connected Can boot from an external computer and load
DOS (through the Programming Port).
Typically, these jumpers are not used since
DOS is installed on the LC module at the
factory. However, if the module’s RAM disk
becomes corrupted, the jumpers must be
installed so that the module can be reloaded
with DOS and rebooted.
C7 and C8 not connected Can boot from LC Flash memory (by
removing module from Base Unit and then
replacing it) (default)
Enable Pmod
(1C31169G02)
J2 Applications Port
RS-485/RS-422
transmittertermination
resistor
B14 and B15 connected Termination resistor enabled
B14 and B15 not
connected
Termination resistor isolated (default)
Enable Pmod
(1C31169G02)
J2 Applications Port
RS-485/RS-422
receiver termination
resistor
A14 and A15 connected Termination resistor enabled
A14 and A15 not
connected
Termination resistor isolated (default)
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