Toshiba Q9+ Installation & Operation Manual page 228

Frequency Point Selection
Program Communications Communication Adjustments
This parameter is used to set the communications reference for
scaling.
See F811 — F814 for additional information on this parameter.
Note: Scaling the communications signal is not required for all
applications.
Changes made to this parameter require that the power be
cycled (off then on) for the changes to take effect.
Settings:
0 — Disabled
1 — 2-Wire RS485 (EOI)
2 — 4-Wire RS485 (Terminal Board)
3 — Communication Option Board
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F810
Direct Access Parameter Information
Q9 Plus ASD Install/Op Manual
F811
Direct Access Number —
Parameter Type — Selection List
Factory Default — Disabled
Changeable During Run — Yes
https://www.toshiba.com/tic/
F810