Configuration Message Frame - Siemens SIMATIC S5 Manual

Driving Stepper Motors with the IP 267
Using the configuration and positioning data settings, the IP 267 generates a
symmetrical traverse profile consisting of an acceleration ramp, a constant
velocity range and a deceleration ramp.
f
f A
f ss
.
1 Accelera-
tion ramp
f ss = Start/stop rate; f =Stepping rate
A
Figure 2-1. Velocity Profile of the IP 267
2.2

Configuration Message Frame

The configuration message frame data must be sent to the module at startup,
after every interruption in the power supply and following response of the
emergency limit switch (PD). The module can only accept positioning data if the
signals of the emergency limit switch (PD) are present and if they have been
configured. The module signals this status with the green "RDY" LED on its
frontplate: "RDY" lights up if the IP 267 can accept positioning jobs.
See Chapter 6.1 for a programming example for configuration.
The following are details of the information each configuration message frame
must contain:
• End switch configuration
• Base value for the stepping rate
• Start/stop rate
• Time interval for stepping rate increase and decrease
The meaning of this information is described in the following pages.
2-2
.
2 Constant stepping
rate/velocity range
3.Decelera-
tion ramp
t
EWA 4NEB 812 6061-02a
IP 267