F@ <@,;b@8b – IAI America IA-T-XD User Manual
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The following are descriptions about the absolute reset methods for synchro specification axes.
The products ordered as the synchro specification are shipped after setting parameters to the
synchro specification. However, change the parameters when executing an absolute reset.
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Synchro axes are comprised of the master axis (main axis) and the slave axis (sub-axis). The
axis of which the number is smaller becomes the master axis.
Program commands are valid only for the master axis. (Commands to the slave axis are
prohibited.)
As the absolute reset methods, there is the standard procedure and the special procedure. Which
procedure to be used is determined by the “each-axis parameter No. 38 encoder ABS/INC type”
values for the master and slave axes.
“Each-Axis Parameter No. 38 Encoder ABS/INC Type” Values
Master Axis
Slave Axis
Absolute Reset Methods
1
1
Special procedure
1
0
Standard procedure
0
0
(When the value is 0 for both the master axis and the slave axis, both the axes are of the
increment specification.)
Example 1) When special procedure is executed for 2-axis controller:
Mode Transition:
Slave axis
Master axis with a smaller axis No.
Note: To change the axis No., use the F3 (Dev-) key or F4 (Dev+) key.
Example 2) When standard procedure is executed for 2-axis controller:
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Align the synchro axes sliders. (Physical parallel adjustment)
(1) Adjust the relative locations between the sliders of the master and slave axes and connect
them while the axes are not connected to the controller via cables (controller main power
OFF).
(2) If location adjustment cannot be made while the axes are not connected to the controller via
cables (such as with the brake), follow the steps below.
㽲
Disconnect the sliders temporarily and connect the axes to the controller via cables.
㽳
Record the current values of the “each-axis parameter No. 65 synchro other axis No.” for
the master and slave axes. (Record them to return to their original values in a later
process.)
㽴
To cancel the synchro function temporarily, input 0 to the “each-axis parameter No. 65
synchro other axis No.” for both the master and slave axes, and execute the data transfer
to the controller, Flash ROM writing and controller restart (software reset) in this order.
㽵
Execute an absolute reset (standard procedure) for each of the master and slave axes as
a single axis.
㽶
Adjust the relative locations of the sliders by jog operation, etc., and connect them.
㽷
Input the values recorded in 㽳 above to the “each-axis parameter No. 65 synchro other
axis No.” for the master and slave axes, and execute the data transfer to the controller,
Flash ROM writing and controller restart (software reset) in this order.
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In the case of “each-axis parameter No. 38 encoder ABS/INC type”: master axis = 1 and slave
axis = 1:
(1) Record the current value of the “each-axis parameter No. 83 ABS synchro slave axis
coordinate initialization cancel” for the slave axis. (Record it to return to the original value in a
later process.)
Mode Transition:
Slave axis
(2) Input 0 for the “each-axis parameter No. 83 ABS synchro slave axis coordinate initialization
cancel” for the slave axis.