Hot Standby Restricted Functions
Original instructions
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At a Glance
Certain restrictions apply to programming the first section (Section 0) of your application.
Section 0 Restrictions
Derived Function Blocks (DFB) may not be used in the Section 0.
WARNING
UNINTENDED EQUIPMENT OPERATION
Do not use R_TRIG, F_TRIG, TRIGGER, TON, TOFF, and TP function blocks in Section 0 of your application program.
Failure to follow these instructions can result in death, serious injury, or equipment damage.
Other Restrictions
WARNING
UNINTENDED EQUIPMENT OPERATION
The global data must not be used in systems that require periodic command swapping. If Global Data is used, the Health timeout must be greater than 10s.
Failure to follow these instructions can result in death, serious injury, or equipment damage.