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SECTION 5: COMMUNICATIONS
33 of 62
FIGURE 18: TCP/IP Communication Module Wiring
5.4 Direct Connect
For local viewing of system status and settings of any
controller, a portable PC can be connected. Using
the 9 pin adapter provided, (See Page 34, Figure 19),
you may connect from your computer serial port to
the RS-232 direct connect port on the control board
via standard 4-wire phone cable. For identification of
the RS-232 direct connect port, see Page 18, Figure
7. This can be useful when a PC is in close proximity
to any ROBERTS GORDON
®
ULTRAVAC™ Control-
ler or while troubleshooting at the controller using a
laptop PC. This type of connector should not be used
if the phone cable is more than 50’ (15 m) in length.
Plug one end of the phone cable into the RS-232
direct port, plug the other end into the adapter shown
in on Page 34, Figure 19. Plug the adapter into a 9-
pin serial port on your computer.
If a PC does not have a serial port, but does
have a USB port, purchase of a USB to Serial
Converter is required.
A USB to 9-pin Serial Cable will allow connection
between the RS-232 device (ULTRAVAC™ Control
Board) and the USB port on the PC. The USB to
serial RS232 DB9 Cable Adapter will be used in con-
junction with the PC Connection Cable Package
(P/N 10080410). USB to Serial RS232 DB9 Cable
Adapters can be purchased at a local computer store
or on the internet for $20.00 or less. The converter
should come with drivers and should draw power
directly from USB, requiring no additional power
adapter.
Description Part Number
Kit, TCP/IP Communication 10080440K
It is important that the module power wire is connected as shown
(black=5 V- / red= 5 V+) wire orientation. Make sure to verify
connection before connecting to the control board.