GE 90*-30 PLC Series - Figure 2-2. Bus Interface Module Powerup Sequence

GFK-1322A Chapter 2 Operation 2-5
2
Clear RAM
Checksum
on code space
correct?
Boot loader
No
Yes
Initialize PLC
backplane
driver
Read stored
network interface
configuration
Turn on
IN MS G and
OUT MSG LEDs
Configuration
valid?
No
Yes
Set configuration
to default values
Initialize
network interface
L
ON
W
ORKS
Initialize default data
values and timeouts
Turn off the IN MSG
and OUT M SG
LE Ds
Main loop
processing
Configure PLC
reference space
when requested
by PLC
Figure 2-2. Bus Interface Module Powerup Sequence