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Installation
RS-232 Controller
Connection
➤
Use a straight-through, 9-pin RS-232 cable to connect a PC or control/automation
system (if present) to the RS-232 port on the DHD Controller; see Figure 3-17.
For more information about using this connection, refer to External Control on page 73.
to Automation/
Control System
or PC
Figure 3-17. RS-232 Control System Connection
36
Q-750d Series Installation/Operation Manual
5
4
3
1
2
9
8
6
7
2 Receive Data
3 Transmit Data
5 Ground
(none of the other pins are used)
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