GFK-0356Q Chapter 4 Power Supplies 4-19
4
CPU Serial Port Connector on Power Supply (All Supplies)
A 15-pin D-type female connector, accessed by opening the hinged door on the right front of the
power supply, provides the connection to a CPU serial port which is used to connect to:
■ A programmer (usually a personal computer) running GE Fanuc PLC programming software.
■ The GE Fanuc Hand-Held Programmer.
■ Other serial devices.
a43832
RS-485
COMPATIBLE
SERIAL PORT
Figure 4-13. Serial Port Connector
■ The serial port connector is only functional in a power supply that is installed in a baseplate
that also contains the CPU. The serial port is not functional on a power supply that is installed
in an expansion or remote baseplate.
■ Any device connected to the serial port that uses +5 VDC power from the Series 90-30 power
supply must be included in the calculation for maximum power consumption (see “Power
Supply Loading Calculations” in Chapter 12).
CPU Serial Port Information
The serial port connector on the power supply accesses the CPU serial port, which is a feature of all
Series 90-30 CPUs. See Chapter 5, “CPUs” for information on this serial port.
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