5-18 Series 90-30 PLC Installation and Hardware Manual
–
August 2002 GFK-0356Q
5
Hardware Features of the 350–364 CPUs
CPU350 and CPU360 Hardware Features
These two modules look identical except for labeling.
■ 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.
CPU Firmware Upgrade
The CPU firmware, which is stored in Flash memory, is loaded through the serial port connector on
the PLC Power Supply.
CPU 350
PORT
ON
OFF
PS
PORT
ON
OFF
PS
CPU 360
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