Table of Contents
Advertisement
IP 240
Positive direction of travel
Selection of
the target
position
target position
Sample
1000
actual
value
Position
valid
Output
D1
Output
D2
Status bit
BEE1
Status bit
RICH
a: When the position was selected, the actual value was
less than the position value for the target position
prior to selection of the target position
Fig. 10-13. Switching Performance of the IP Outputs when DAV=2
To monitor switching of the traversing speed, you can scan status bit BEE1 cyclically on the IP 240
after positioning has started or evaluate the interrupt (BE1) generated by the negative edge of
the BEE1 bit. In this way, you can control two additional PLC digital outputs over the S5 CPU.
Note
In the case of a rotary axis, the IP 240 always switches the outputs so that the target
position is reached over the shortest possible path.
10.5.4 Recommendations for Selecting the Switching Performance
It is recommended that the IP outputs show the following switching performance when the IP is
used for axis control:
Table 10-11. Recommendations for Selecting the Switching Performance of the IP Outputs
One
traversing speed
Two
traversing speeds
EWA 4NEB 811 6120-02a
Switching
Position
points for the
value for the
target position
BEE1
BEE2
2000
3000
3500
One direction of travel
The IP outputs control the
traversing speed
The IP outputs control the
traversing speed
Negative direction of travel
Selection of
Switching
the target
points for the
position
target position
BEE2
3500
4000
b: When the position was selected, the actual value was
less than the position value for the target position
Two directions of travel
The IP outputs control the
direction of travel
The IP outputs control the
traversing speed
Positioning
Position
value for the
target position
BEE1
5000
6000
10-19
Advertisement
Table of Contents
