Runco Q-750D User Manual
36
Q-750d Series Installation/Operation Manual
PRE
L
IMINAR
Y
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.
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.
Figure 3-17. RS-232 Control System Connection
➤
1
2
3
4
5
7
8
9
6
to Automation/
Control System
or PC
2 Receive Data
3 Transmit Data
5 Ground
3 Transmit Data
5 Ground
(none of the other pins are used)