
Chapter 9 Functions
9-147
9.4.6 Operating the Absolute Position CAM
Absolute Position CAM operation allows the cam to synchronize to the absolute position of the main axis.
(1)
Control Characteristics
Once the command for Absolute Position CAM operation (XCAMA, XPM_CAMA) is executed, the main
axis will move to the synchronization position by moving the distance set in STRT_DST. The
synchronization position is the position of the longitudinal axis according to the cam data value set in the
cam block, which is located at the position of the main axis that has moved the distance set in
STRT_DST. The synchronization position of the main axis may move according to SLV_OFFSET and
MST_OFFSET values. Once the main axis reaches the distance set in STRT_DST, cam operation is
performed according to the cam data values set in the cam block.
(2)
Parameters of Absolute Position CAM
Category
Setting values
Description
Main axis
1 (1 axis) - 8 (8 axes),
9 (Encoder1)
Sets the main axis for cam operation.
Cam block
1 (no. 1) - (no. 9)
Sets the number of the cam block.
Start
distance
-2147483648 -
2147483647
Sets the starting position of absolute position cam
operation.
Main axis
offset
-2147483648 -
2147483647
Sets the position of the main axis where the
longitudinal axis starts cam operation at an offset
value at the main axis position.
Longitudinal
axis offset
-2147483648 -
2147483647
Sets the position of the main axis where the
longitudinal axis starts cam operation at an offset
value at the longitudinal axis position.
(a) The encoder can be used as the main axis of absolute position cam operation.
(b) Different cam block numbers can be set for each axis. Also, cam operation of different axes is
possible with one cam block.
To use the user CAM operation, the cam block number must be set to 9.
(c) You can change the position of the main axis where cam synchronization starts upon cam command
execution by setting the starting distance (STRT_DST). If the starting distance is set to a small
value, the longitudinal axis may operate suddenly once the absolute position cam operation is
executed and could result in a shock.
(d) You can change the starting position of the longitudinal axis cam operation by setting the main axis
offset and the longitudinal axis offset.
(3)Restriction
The absolute position cam operation command cannot be executed under the following conditions, which
are interpreted as errors:
(a) If the cam operation command is executed during a state where the M code signal is ON.
Содержание XBF-PN04B
Страница 1: ...Programmable Logic Controller Positioning Module EtherCAT XGB Series XBF PN04B XBF PN08B ...
Страница 626: ...Chapter 9 Functions BPS37 setup RS232 and PC connection BPS37 option board LED 9 193 ...
Страница 628: ...Chapter 9 Functions c Execute BPS37 set up program and enter the setting values as follows 9 195 ...
Страница 796: ...Appendix3 Dimension A3 1 Appendix 3 Dimension Appendix 3 1 Dimension of XBF PN04B PN08B ...