Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 126

Process control function blocks

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Operation error

Input data (IN) or operation constant (HILMT, LOLMT, HS1, or HS2) is a subnormal number or NaN (not a number).

An overflow has occurred.

The high limit hysteresis (HS1) is less than 0 or low limit hysteresis (HS2) is less than 0.

The low limit value (LOLMT) is greater than high limit value (HILMT).

8 CONTROL OPERATION

8.5 High/Low Limiter (M+P_LIMT)