
Signal Connections
19
3.3
Isolated Encoder Differential Input
There are 4 pairs of A-B-Z encoder signal inputs on PCI-8124. The
pin assignment of these encoder inputs are listed in the following
table.
The typical forward voltage of the input diode is 1.65V. And the
forward current of the input diode is 7.5mA to 12.5mA. There is an
internal resistor in the PCI-8124 circuit as figure shows below. So
if there is no additional resistor connected outside the PCI-8124,
the voltage difference between and Encoder- should be
lower than 5VDC.
Note: n=1, 2, 3, 4
CN1 Pin No. Name
Description
9, 15, 34, 40
EAn+ Isolated Encoder A +
10, 16, 35, 41
EAn-
Isolated Encoder A -
11, 17, 36, 42 EBn+ Isolated Encoder B +
12, 18, 37, 43
EBn-
Isolated Encoder B -
13, 19, 38, 44 EZn+ Isolated Encoder Z +
14, 20, 39, 45
EZn-
Isolated Encoder Z -
Summary of Contents for PCI-8124
Page 5: ......
Page 17: ...8 Introduction ...
Page 30: ...Signal Connections 21 Outside PCI 8124 inside PCI 8124 TRGx 220Ω ...
Page 33: ...24 Signal Connections ...
Page 49: ...40 Operation Theory ...
Page 72: ...Function Library 63 I16 Enable Enable Disable linear set X 0 disable 1 enable ...
Page 83: ...74 Function Library ...