Rockwell Automation 8520 9/Series Hardware TAB 5 - Manual (Page 95)

Section 5B
9/440HR CNC/Drive System
5B-21
Figure 5B.14
Signal Specification of HIPERFACE Devices
630 _ max.
90 _ min.
0 _
0.5V
typ
0.5V
typ
CHA_HI
CHB_HI
CHA_LO
CHB_LO
2.5V (typ)
(2.2 – 2.8)
*RS–485
reference
pulse
1
1 The reference pulse signal is output once per revolution on the RS485
interface, after power up initialization.
During the power up initialization, the RS485 channel is used to
determine:
absolute position and rotational position for absolute HIPERFACE
devices