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User Manual – JetControl 365MC
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8.2 Storage options - Overview
The controller JC-365MC features several types of program and data memories.
This memory is located directly in the CPU or in separate memory or I/O mod-
ules.
There is volatile and non-volatile memory:
■
Volatile memory loses its content at switching off.
■
Non-volatile memory keeps its content even when the power supply is off.
8.2.1 Operating system memory
The operating system is located in the system area of the controller's flash mem-
ory.
Properties
■
Internal non-volatile flash memory for the operating system
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After switching on the device with mode selector S11 in RUN or STOP posi-
tion, the operating system is loaded from the flash memory into the RAM of
the controller and started.
Types of access
■
The user is not allowed to directly access the OS memory.
■
The operating system can be changed via an update.
8.2.2 File system memory
The file system memory is for storing data and program files.
Properties
■
Non-volatile
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Slow access: Milliseconds up to seconds
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Limited number of write/erase cycles: Approx. 1 million
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Size of internal flash disk: 24 MB
■
Size of the external SD memory card: 32 MB ... 32 GB
Types of access
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By the operating system
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By JetSym
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Via FTP connection
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By the email client
■
Via a browser (via the HTTP server)
■
Via file commands from the application program and through the AutoCopy
function
