communication. The USB port on the DMC-41x3 is a Female Type B USB port. The standard cable when
communicating to a PC will be a Male Type A – Male Type B USB cable.
When connected to a PC, the USB connection will be available as a new serial port connection (ex. with GDK
“COM3 115200”).
The USB port is not recommended when using the GDK Scope. In this case the Ethernet connection is advised for
higher performance.
Baud Rate Selection
JP1 JUMPER SETTINGS
19.2 BAUD RATE
ON 19200
OFF (recommended) 115200
USB Driver
The USB port on the DMC-41x3 utilizes a USB to serial converter. The driver for this device is expected to be
loaded automatically upon connection of the controller in most OS's. If the driver does not load, or is not installed
automatically, it can be downloaded from the mfg website here:
http://www.ftdichip.com/Drivers/VCP.htm
RS-232 Port
The main purpose of the auxiliary RS232 port is to connect to external devices that cannot use DMC code to
communicate. It is important to note that the Aux port is not an interpreted port and cannot receive DMC Galil
commands directly. Instead, use CI, #COMINT, and the P2 operands to handle received data on this port.
NOTE: If you are connecting the RS-232 auxiliary port to a terminal or any device which is a DATASET, it is
necessary to use a connector adapter, which changes a dataset to a dataterm. This cable is also known as a 'null'
modem cable.
CC Command
The CC, or Configure Communications command, configures the auxiliary ports properties including: Baud rate,
handshaking, enable/disabled port, and echo. See the CC command in the Command Reference for a full
description and command syntax.
If the CC command is configured for hardware handshaking it is required to use the RTS and CTS lines. The RTS line
will go high whenever the DMC-41x3 is not ready to receive additional characters. The CTS line will inhibit the
DMC-41x3 from sending additional characters. Note, the CTS line goes high for inhibit.
RS-422 Configuration
The DMC-41x3 can be ordered with the auxiliary port configured for RS-422 communication. RS-422
communication is a differentially driven serial communication protocol that should be used when long distance
serial communication is required in an application.
For more information see RS-422 – Auxiliary Serial Port Serial Communication in the in Appendix.
Chapter 4 Software Tools and Communication ▫ 40 DMC-41x3 User Manual
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