Instruction Manual

22 • Signal Connections
3.3
Origin Signal ORG
The origin signals (ORG1∼ORG4) are used as input signals for origin of the
mechanism. The following table lists the relative signal name, pin number,
and the axis number.
CN2 Pin No
Signal Name
Axis
#
41
ORG1

47
ORG2

91
ORG3

97
ORG4

The input circuits of the ORG signals are shown as following. Usually, a
limit switch is used to indicate the origin of one axis. The specifications of
the limit switches should with contact capacity of +24V, 6mA minimum. An
internal filter circuit is used to filter out the high frequency spike, which may
cause wrong operation.
EX+24V
I
f
=6mA Max.
Filter
Circuit
Motion ASIC
ORG
4.7K
EXGND
Inside PCI-8134/PCI-8134A
CN2
← Switch
VDD
GND
Motor Encoder / Driver
With Open Collector Output
External Power for
Encoder
PCI-8134/PCI-8134A
A, B phase
signals
EA+, EB+,
EA-, EB-,
R