Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 191

■Loop stop processing
When the stop alarm (SPA) of the alarm (ALM) is TRUE, this function block performs the following processing.
• Outputs (MVP) are held.
• The control mode is automatically switched to MANUAL.
■Processing operation
: Performed, : Not performed
Control mode
MAN, CMV
AUT, CAS, CSV
Operation error
Error code Description
(SD0)
3400H An invalid operation (such as division by zero) is performed.
3402H Input data (PVP) or operation constant (SVPTN_B0) is a subnormal number or NaN (not a number).
3403H An overflow has occurred.
3405H The control cycle (CT) setting is less than 0.
The execution cycle (T) setting is less than 0.
The value divided the control cycle (CT) by the execution cycle (T) exceeds 32767.
Processing operation
Ratio calculation


Variation rate limiter


10 LOOP CONTROL OPERATION
10.2 Ratio Control (Disable Tracking for primary loop) (M+P_R)
Engineering value conversion


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