Clearing a
Controller’s
Memory
A full clearance of the controller's memory requires about 2 days, power off, and
battery connection removed. A quick way to force a controller to enter a "No Conf"
mode is to disconnect the communication cable during the download process of an
application project whose configuration is different from the one staying in the
controller's memory. Pay attention, anyway: this type of operation doesn't realize a
complete reset of the memory (e.g. the communications parameters are not reset)
Checking the
CPU’s Status
At this stage, look at the controller's front panel. The COM LED is blinking, and the
STS LED is in a steady-on state. This condition usually indicates that the system is
not redundant and that the controller's Redundant Copro completed both its boot
after a power up and its self-tests.
The keypad should display a "Run Primary" indication (in the relevant case, just act
on the ESC key in order to make the keypad display its first "page").
Shipping Port: Xiamen, China
