BEHAVIOUR OF THE PROGRAM ON RESTARTING AFTER A MAINS POWER FAILURE

FBD components

If the "Memory function" box in the parameterisation box is checked, the current values of the TIMER Li and TIMER B/H blocks are restored.

If the "Initialisation on mains power failure" box in the parameterisation box is not checked, the current values of the PRESET COUNT and PRESET METER blocks are restored.

FBD-C components

If initialisation on mains power failure is set to No, the current values of the FBD-C blocks containing this INITIALISATION parameter are restored.

SFC components

On restarting after a mains power failure, the previous positions of the status tokens in the independent SFC charts are:

XC extensions

On restarting after a mains power failure, the XC extensions are reinitialised.

M2-M2 extensions

Re-synchronisation occurs on restarting after a mains power failure.

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