GE 90-30 PLC Series Installation And Hardware Manual page 129

5
Hardware Features of the 350–364 CPUs
CPU350 and CPU360 Hardware Features
These two modules look identical except for labeling.
CPU Firmware Upgrade
The CPU firmware, which is stored in Flash memory, is loaded through the serial port connector on
the PLC Power Supply.
5-18 Series 90-30 PLC Installation and Hardware Manual – August 2002
These modules feature an LED light, labeled "PS Port" that indicates serial port activity
through the serial connector on the PLC power supply. Typically, this LED will flash while
data is being transferred through the port, and will stay off when the port is inactive.
These modules also have the keyswitch, described earlier in this chapter, that is standard on the
350–364 CPUs.
PS
PORT
CPU 350
ON
OFF
PS
PORT
CPU 360
ON
OFF
GFK-0356Q