User`s manual

OP7100 Hardware
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The jumpers on header JP4 may be reconfigured so that header J11 carries
the Z180 Port 1 TX1 and RX1 RS-232 signals on pins 2 and 3 instead of
the factory-default RS-485+ and RS-485– signals.
Figure 3-16 shows the header JP4 jumper configurations and the location
of headers JP3 and JP4.
Figure 3-16. Serial Communication Options for
External Plug Connector (Header J11)
FD
JP4
12
34
56
78
RS-485 on
header J11
JP4
12
34
56
78
RS-232 on
header J11
JP4
JP5
JP3