Emerson FM-3 - Manual (Page 158)

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FM-3 Programming Module Reference Manual
Acceleration Decimal Places
AccelUnits.Decimal
This parameter is the decimal point location for all real-time accel./decel. ramps.
Acceleration Time Scale
AccelUnits.TimeScale
This parameter is the time units for accel./decel. ramps. Possible selections are milliseconds
or seconds.
At Velocity
AtVel
This source is active when the FM-3 module is executing a constant velocity motion segment.
One example would be during an index. The source would activate after the motor has
finished accelerating up to speed and before the motor begins to decelerate to a stop. A normal
index consists of 3 segments: Accelerating, At Velocity, and Decelerating. This source is
active during the At Velocity segment, and is activated based on the commanded velocity, not
the feedback velocity. During synchronized motion, AtVel can be active without actual motor
movement.
Bit Number Value
Bit.B#
This read/write bit may be used in a program as an intermediary variable bit controlled by the
user. Bit.B# is one of 32 bits that make up the BitRegister parameter. Assigned to
communication networks such as DeviceNet, Profibus and Modbus, Bit.B# may be used to
transfer events that have occurred in a PLC to the FM-3/4 program.
Note
When the value of Bit.B# is changed, the value of BitRegister.#.Value is changed as well.
Bit Register Number Value
BitRegister.#.Value
This parameter is made up of the combination of the 32 Bit.B#. The BitRegister.#.Value. The
BitRegister.#.Value register may be accessed bitwise by using Bit.B#, or double word-wise
by using BitRegister.#.Value.