Serial Communications
6-5
April 2008
Point-To-Point Wiring
Standard factory wiring of the RS485 serial interface is configured for
point-to-point wiring. That is, a single Model GC868 may be wired
directly to a single personal computer. To connect the RS485 serial
interface, refer to Figure 6-1 on page 6-4 and complete the following
steps:
Note:
For compliance with the European Union’s Low Voltage
Directive (73/23/EEC), a transparent plastic shroud protects
the electrical connections. The shroud must remain in place,
except while wiring the unit. Reinstall the shroud after the
wiring has been completed.
1.
Disconnect the
main power
to the electronics console and open the
cover.
!WARNING!
Dangerous voltages exist within the electronics console.
Do not perform any wiring operations until the main
power to the unit has been disconnected.
2.
Remove the clear plastic
shroud
that covers the electrical
connectors.
3.
Using a
twisted-pair wire
, connect the XMT+ terminal of the
barrier strip to the T+/R+ terminal of the PC’s RS485 adapter and
connect the XMT– terminal of the barrier strip to the T-/R-
terminal of the PC’s RS485 adapter (see the documentation
provided with the RS485 adapter for details).
Note:
The XMT+ terminal on the barrier strip is the screw opposite
the red wire connection and the XMT– terminal on the barrier
strip is the screw opposite the green wire connection.
4.
Reinstall the clear plastic shroud, close the cover to the electronics
console and reconnect the main power.
The RS485 serial interface is now ready for point-to-point operation.
Summary of Contents for DigitalFlow GC868
Page 8: ...Chapter 1 ...
Page 61: ...Chapter 2 ...
Page 78: ...Chapter 3 ...
Page 91: ...Chapter 4 ...
Page 105: ...Chapter 5 ...
Page 111: ...Chapter 6 ...
Page 123: ...Appendix A ...
Page 132: ...Appendix B ...
Page 133: ...Data Records Option Cards Installed B 1 Initial Setup Data B 2 ...
Page 136: ...Appendix C ...
Page 156: ...Appendix D ...