E. The fieldbus
If you do power-down to the last device, there is no bus termination.
NOTE!
5.4 INSTALLATION OF OPTION BOARDS
Do not install, remove, or replace option boards on the drive when the power is on.
Doing this can cause damage to the boards.
CAUTION!
Install the option boards into the option board slots of the drive. Refer to Table 29.
N800A
5. CONTROL UNIT
70