SILOS – Save input string, load output string

Block SymbolLicensing group: STANDARD

Function Description
The SILOS block can be used to export or import a string to/from a file. The string is saved when a rising edge (off$\to$on) occurs at the SAVE input and the string is also set to the sy output. The string is loaded at startup and when a rising edge (off$\to$on) occurs at the LOAD input.

If a logical true (on) is brought to the APPEND input, the input string is added to the end of the file when it is saved. This mode is useful for logging events into text files. This input signal has no effect on loading from the file.

The LLO parameter is intended for choosing whether to load the entire file (off) or its last line only (on).

The outputs E and lastErr indicate an error during disk operation. The E indicator is reset on falling edge at the SAVE or LOAD input while the lastErr output holds the value until another disk operation is invoked.

Alternatively it is possible to write or read the string continuously if the corresponding flag (CSF, CLF) is set to on. The disk operation is then performed when the corresponding input is set to on. Beware, in that case the disk operation is executed in each cycle, which can cause excessive use of the storage medium. Thus it is necessary to use this feature with caution.

The fname parameter defines the location of the file on the target platform. The path is relative to the data folder of the RexCore runtime module.

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