Overview Of Module Functions - Siemens SIMATIC S7-300 Manual

1.3

Overview of module functions

Summary
The FM 354 module performs the following functions:
Operating mode The user program passes the operating mode to the FM.
control
The FM 354 has the following modes available:
Encoders
Incremental or absolute encoders (SSI) may be connected to the measuring
system port.
Position control The position controller performs the following tasks:
FM 354 Servo Drive Positioning Module
Mode control
Actual-value capture
Servo position control
Digital inputs and outputs
Settings and functions that do not depend on operating mode
Software limit switches
Process interrupts
Block sequence control
Diagnostics and troubleshooting
Data storage on the FM 354
Jogging
Open–loop control
Reference point approach
Incremental mode, relative
Manual data input (MDI)
Automatic
Automatic single block
Guidance of the drive commensurate with speed during movement se-
quence (e.g. adjustable acceleration and delay, jerk limitation, following
error monitoring), see Section 9.7 "Position control")
Precise approach of the axis to the programmed target position
(e.g. approach to position; see Section 9.7 "Position controller")
Maintenance of the axis in position when outside factors interfere.
(e.g. offset compensation; see Section 9.7 "Position control")
Product Summary
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