Product manual

STEP 5 Programming IP 266
9.4.3 FB 26: Control FB for the IP 266
The following steps are executed in succession in this FB:
• Read input message (PII)
• Error analysis
• Scan external signals
• Check reference point and set if required
• Select mode
• Select function
• Program TOGGLE bit
The relevant calls must be made in this FB to invoke additional modes or change
existing modes.
The sample program could also be upgraded by programming mode interlocks.
One complete FB 26 pass is equivalent to one OB 1 cycle.
9-14 EWA 4NEB 812 6057-02