8.4 RS-232 DEVICE PORT MODULE
The RS232 device port module has two programmable jumpers, JP1 and JP2. Figure 8-3 shows the location of
these jumpers. These jumpers are set at the factory; do not change the settings of these jumpers.
Figure 8-3. Programmable jumpers, RS232 device port module
8.5 DIRECT DIGITAL I/O MODULE
The Direct Digital I/O Module has three programmable jumpers: J2, J3 and J4. Figure 8-4 shows the
location of these jumpers. These jumpers are used to enable or disable RS-232 handshaking. When all
jumpers are in position A, RS-232 handshaking is disabled. When all jumpers are in position B, RS-232
handshaking is enabled. The jumpers are set at the factory in position B (enabled).
RFL 9660 RFL Electronics Inc.
April 24, 2007 8-6 (973) 334-3100
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