Download MasterTool Programming, PONTO Series Programming

Chapter 3
Diagram of Relays Language
The management of the loading of the module into EPROM flash is identical to that of RAM
memory, shown in the previous section Compaction.
Erasing and Re-enabling Modules on EPROM
The erasing command can be used for modules stored in the EPROM memory of the PLC. As the
erasing of EPROM’s is only possible for all its contents, this command only retires the information
from the modules directory, not carrying out a real erasing of the memory.
The same happens if a module recorded in EPROM is substituted for a new module of the same type
and number loaded by the serial channel. The new module is stored in RAM, remaining the old one
in EPROM, only the new one in RAM being shown in the directory.
The module removed through the erasing command or substituted with the load from a new module
can be restored to the directory, since its contents are still recorded in EPROM memory. This
recovery is possible with the modules re-enabling command.
The re-enabling renders the module non-existent in the directory and reappears in EPROM, or that
one already existing in RAM may be substituted for a previous one in EPROM.
For further information regarding how to erase or re-enable modules, c.f. items Erasing Modules
in the PLC or Router and Re-enabling Modules in EPROM in the section Communicating
with the PLC or Router on the MasterTool User’s Manual.
Erasing the EPROM Memory
With the total erasing from EPROM memory, all the modules are removed, all the available space
being available for the recording of the new modules.
To erase the EPROM cartridge an appropriate eraser device should be used, after the removal of the
cartridge from the PLC.
To erase the EPROM flash memory, use the options Communications, Modules, Erase Flash
which are the PLC in programming mode. The erasing can wait several seconds, depending on the
capacity of the flash used in the PLC. For further information regarding how to erase the flash
memory, c.f. item Erasing the EPROM Flash Memory in the section Communicating with
the PLC or Router on the MasterTool User’s Manual.
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