12.93 12 Functional Descriptions
12.22.2 Functional description
Assignment between cam pairs and axes
The cam pairs are assigned via the NC/PLC interface to specific axes as follows:
Bit No. 11 10 9 8
.
.
.
1st axis
2nd axis
3rd axis
30th axis
DB32 DW123
127
131
239
Bit 11 Bit 10 Bit 9
0 0 0 0 "Cam pairs" function inactive
0 0 0 1 Cam pair 1 active
0 0 1 0 Cam pair 2 active
0 1 0 0 Cam pair 3 active
1 0 0 0 Cam pair 4 active
Bit 8
Function
The changed cam assignments are not transferred to the NC until a 0/1 signal edge change in
the ACTIVATE CAM/AXIS ASSIGNMENT signal (DB 48 DR0.6). As an acknowledgement of
transfer, the user receives the CAM/AXIS ASSIGNMENT ACTIVATED signal (DB 48 DR1.6).
He must then reset the signal DB48 DR0.6.
© Siemens AG 1992 All Rights Reserved 6FC5197- AA50
12–237
SINUMERIK 840C (IA)