1.2 Connection Examples
The following examples show how to connect using a PC / laptop without a built-in RS-232 COM port.
1.2.1 Using a USB‑to‑RS‑232 Converter
Most standard USB-to-RS-232 converters come with a DB-9 male-type connector. Because the connector on the
dispenser is also a DB-9 male-type connector, you can use a DB-9 female-to-female adapter (gender changer) to
make the RS-232 connection.
RS-232 port on
dispenser (front
or back)
DB9 female-to-female
adapter (gender changer)
USB 2.0-to-serial-cable
adapter
From a USB port on
the PC / laptop
1.2.2 Using a DB9‑Female to DB9‑Female‑Straight‑Through Cable
NOTE: A null modem cable (pin 2 and pin 3 connections swapped) will NOT work with the Ultimus V dispenser.
RS-232 port on
dispenser (front
or back)
DB9-female to DB9-female-
straight-through cable
From a USB port on
the PC / laptop
Pin 2 Pin 2
Pin 3 Pin 3
Pin 5 Pin 5
Appendix B — RS‑232 Protocol (continued)
Ultimus V High Precision Fluid Dispenser
40 www.nordsonefd.com info@nordsonefd.com 800-556-3484 Sales and service of Nordson EFD dispensing systems are available worldwide.
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