Chapter 2 I/O ports
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42
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(I/O signal functions for speed control)
CN2-21 Phase-A +(LD): A+ (output)
CN2-22 Phase-A -(LD): A- (output)
CN2-23 Phase-B +(LD): B+ (output)
CN2-24 Phase-B -(LD): B- (output)
CN2-25 Phase-Z +(LD): Z+ (output)
●
Function
CN2-26 Phase-Z -(LD): Z- (output)
These ports transmit encoder signals of Phase-A,
-B, -Z from the line driver (26LS31).
◆
Connection
Receive the signals using a line receiver
(AM26LS32 or equivalent).
Note: Use EIA-422A standard for line receiver.
26LS31
Phase-A+
21
22
25
26
23
24
13
Phase-A-
Phase-B+
Phase-B-
Phase-Z+
Phase-Z-
Monitor ground