Hitachi NES1-004SB Quick Reference Manual page 113

Chapter 7 Explanation of Functions
(13) PID sleep function
If PID command is below the (A156), it stop the output after the (A157). If PID command is above the
(A156), it start the output after the (A157). If it returns within (A157), PID sleep function doesn't work.
(A158) should set higher than (A156).
Even if the PID function is disabled, when the frequency command value is below the (A156), it stop the
output after (A157). When the frequency command value is above (A158), it start the output after (A157).
When using this function, please do not use the terminal free-run(FRS).
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