Siemens SINUMERIK 840D Simodrive 611 digital

6 Pro
g
rammin
g
the control
6
03/2006
6.10 Linear motors (1FN1 and 1FN3 motors)
6-148
© Siemens AG 2006 All Rights Reserved
SINUMERIK 840D/810D Start-Up Guide (IADC) – 03/2006 Edition
Scanning head
Rating plateScale
+
Fig. 6-37 Determining the count direction of Heidenhain measuring systems
2. Renishaw measuring systems (e.g. RGH22B)
The RGH22B measuring system from Renishaw (grid size = 20 µm) is not
compatible for connection to Heidenhain systems until serial number
G69289. The zero marker on earlier scanning head models cannot be eva-
luated. Since the reference marker on the Renishaw RGH22B has a direc-
tion-dependent position, encoder signals BID and DIR must be parameteri-
zed such that the reference marker is output in only one direction. The
direction (positive/negative) is dependent on the geometric configuration on
the machine and the reference point approach direction.
Table 6-29 Signal and pin assignments, routing on 1FN linear motor
Signal Cable co-
lor
Round
connector
Connected to
l
or connector
12-pin
+5 V 0 V
BID Black Pin 9 Reference marker in
both directions
Reference marker in
one direction
DIR Orange Pin 7 Positive directions Negative direction
+5 V Brown Pin 12
0 V White Pin 10
The count direction of the measuring system is positive if the scanning head
moves in the direction of the outgoing cable in relation to the gold strip.
ËËËËËËËËËËËËËËËËËË
ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ
ÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌÌ
Gold strip
Scanning
head
Measuring system
+
Fig. 6-38 Determining the count direction of Renishaw measuring systems
Note
If the scanning head is mechanical connected to the primary section, then the
cable exit direction must be different. Otherwise invert the actual value!