MITSUBISHI ELECTRIC FR-S520E - Manual (Page 110)

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Additional function parameters
•Use Pr. 59 to select whether the remote setting function is used or not and whether
the frequency setting storage function* in the remote setting mode is used or not.
When "remote setting function - yes" is selected, the functions of signals RH, RM and
RL are changed to acceleration (RH), deceleration (RM) and clear (RL), respectively.
Use Pr. 60 to Pr. 63 (input terminal function selection) to set the signals RH, RM, RL.
* Frequency setting storage function
This function stores the remotely-set frequency (frequency set by RH/RM
operation) into memory.
When power is switched off once, then on, operation is resumed with that output
frequency value. (Pr. 59="1")
Pr. 59 Setting
Operation
Remote setting function
Frequency setting storage
function (E 2 PROM)
0 No 
1 Yes Yes
2 Yes No