I-8091 User Manual
Version 2.0 04/2003
EXT_VCC 19
External
power(12~24V) for limit switches
/ORG2 20
Y-axis
original (home) limit switch
/LS21
21
Y-axis limit switch
22,23
No
used
/LS24
24
Y-axis limit switch
EXT_GND
25
External ground for limit switch
2.5.2 The internal circuit of CW_PULSE, CCW_DIR, HOLD
When output these signal as 1, it can source 15mA(max.).
When output these signal as 0, it can sink 50mA(max.)
+5V
330
CW_PULSE1
CCW_DIR1
HOLD1
CW_PULSE2
CCW_DIR2
HOLD2
i8091
Fig.(9) internal circuit of pulse output pin
2.5.3 The internal circuit of limit switch input
Initially, the limit switch inputs of I-8091 board are normal open (N.O.),
the I-8091 board will automatic protect when limit switch pin connect
to EXT_GND. The user can use the command i8091_SET_NC
(cardNo, YES) to let those limit switch input as normal close condition
at the beginning of the user’s program.
EXT_VCC (12V~24V)
4.7K
/ORG1, /LS11, /LS14
/ORG2, /LS21, /LS24
/EMG
i8091
Fig.(10) internal circuit of limit switch input pin
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