Installation manual

207

Glossary

Firmware

The term firmware refers to software (i.e., computer programs) that are stored in some fixed

form, such as read-only memory (ROM).

Flash

Another type of EEPROM.

Flash File

In the FM-3, this file loads the firmware into the drive and function module. Flash files can

field upgrade the firmware.

Function Module - device which is attached to the front of the drive to provide additional

functionality.

Global Where Am I

Emerson Motion Control PowerTools feature that indicates which line of which user program

is executing.

Home Routine

The home provides motion in applications in which the axis must precisely align with some

part of a machine.

Hysteresis

For a system with an analog input, the output tends to maintain its current value until the input

level changes past the point that set the current output value. The difference in response of a

system to an increasing input signal versus a decreasing input signal.

I/O

Input/Output. The reception and transmission of information between control devices. In

modern control systems, I/O has two distinct forms: switches, relays, etc., which are in either

an on or off state, or analog signals that are continuous in nature generally depicting values

for speed, temperature, flow, etc.

Index

An index is a complete motion sequence (defined motion profile) that moves the motor a

specific incremental distance or to an absolute position.