Working with Controllers
372 SPU 780 01EMAN May 2002 97
Transferring Internal Flash or PCMCIA to Controller Flash
Overview This function copies the memory contents of a Compact TSX, Quantum 434, or
Quantum 534 controller to the controller’s flash RAM or PCMCIA memory card.
When the controller receives power, it first checks to see if a valid configuration is
present in the data memory. If not, the contents of the flash RAM or PCMCIA
memory card are re-loaded into the controller memory.
Flash RAM or PCMCIA memory card may be used as an alternative to the optional
battery backup or an extra backup of the logic and configuration.
This function cannot be performed while the controller is running. You must stop the
controller first.
Transferring the
Controller’s
Memory
Contents to
Controller Flash
or PCMCIA
Memory Card
From the project right-click menu in the navigation panel:
Note: Do not attempt the transfer operation if the controller’s battery is LOW as the
processor contents may be lost.
Step Action
1Select Online Commands → Write → Transferring to Flash/EEPROM/PCMCIA.
2Select Internal Flash to transfer the current logic to flash memory or PCMCIA to
transfer the current logic to the PCMCIA memory card.
3 Compact controllers have enhanced options that may be set prior to transferring. Set
the parameters for internal flash and PCMCIA settings:
Start PLC after download from EEPROM: Automatically starts the controller
with the logic that was stored in flash memory or the PCMCIA card during a power
failure.
Save state RAM: Saves the last state to flash memory or the PCMCIA card in the
event of a power failure.
4 Type the number of registers to save in the 4xxxx registers to save field. The
specified number of registers are saved to flash memory or the PCMCIA card in the
event of a power failure.
5 Click Transfer to transfer the logic to flash memory or the PCMCIA card. You are
prompted to stop the controller if it is running.
Note: Click Clear Flash to clear the logic stored in the flash memory or the PCMCIA
card.
6 If the controller is currently running, click Stop.