OPTICOM 764 - USB Port Functionality; USB Port Pin Assignments; RS-232 Communication Ports Overview

Intersection Equipment Installation Instructions
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12.2 USB Port
The USB port on the phase selector is a standard mini-AB receptacle. To communicate with the phase
selector using USB, connect a USB cable from the USB port on the phase selector to a USB port on your
computer.
• The first time you connect your computer to the phase selector using the USB port, your computer
will detect a new device called Opticom phase selector.
o The drivers will automatically be loaded.
o Once complete, a new serial port will be created on your computer.
• Select that port number in the On-site software to communicate with the phase selector.
o See the On-site software help file for details.
• When you disconnect the USB cable, your computer will no longer see that serial port.
o But it will reappear when you reconnect the cable.
o If you plug into a different USB port on your computer, it may install another serial port.
Pin
Function
1
VCC (+ 5 VDC)
2
Data -
3
Data +
4
ID
5
Ground
Table 12-4 USB port (mini-A) pin assignments
12.3 RS-232 Communication Ports
• There are four RS-232 communication ports.
• Two of these ports are on the phase selector.
o COM 1 is on the front panel (industry-standard DB-9 connector)
o COM 2 is on the rear card edge
• There are two additional RS-232 ports available on the model 768 auxiliary Interface panel.
o COM 3 (industry-standard DB-9 connector)
o COM 4 (industry-standard DB-9 connector)
o These ports may require a null modem adapter
• Some of these ports have adjustable baud rates and protocol. These settings are adjusted using the
On-site software.
o The protocol and baud rate for COM1 are fixed at 115,200 SCOM (Serial Communications)