
10. CONNECTION TO FANUC I/O Link
B–63003EN/04
248
When using other manufacturers’ manual pulse generators, ensure that
the following specifications are satisfied.
The relationship between the HAn and HBn signals and the CNC pulses
shall be as shown in Fig. 10.4.17 (a).
Pulse cycle T
1
shall be 200 msec or more. Pulse cycle T
1
/4–direction pulse
shall be 50 msec or more.
T
1
HAn
HBn
T
1
4
T
1
T
1
44
T
1
– direction pulse
+ direction pulse
Forward rotation
Click point
Reverse direction
Backward rotation
Fig. 10.4.17 (a)
The circuit that receives signals input from the manual pulse generator
shall be configured as shown in Fig. 10.4.17 (b).
+5V
C
0V
0V
–
+
10kW
R
Manual pulse
generator
Filter
Connector
Receiver’s internal
circuit
Fig. 10.4.17 (b)
Input signal level change point (threshold)
When the voltage is 3.7 V or higher, the input signal level changes from
low to high.
When the voltage is 1.5 V or lower, the input signal level changes from
high to low.
Manual Pulse Generator
Interface
Pulse width
Receiver