5 I/O Interface Connections
5 - 3
advantage of using output relay board is to protect the controller circuits from
being damaged in case of short circuit. This method of connection is suitable for
NPN-type output connector only.
Fig 5-3 HUST Output Relay Board (NPN-type)
5.3 Input Signals
Input signal is the one from external devices to CNC controller, such as push button,
sensor, limit switch, proximity switch, etc. There are 24 inputs for HUST H2N
controller and their status can be displayed on LCD screen by pressing the blank key
(below AUTO key) on the keyboard.
LED
Indicator
RELAY
NPNO_2S\N:
O07
O06
O05
O04
O03
O02
O01
O00
DIP Switch
+24V
GND
+24V
DB25LM
Connector
155 mm
107 mm
+24V
COM7
NO0
7
+24V
COM6
NO06
+24V
COM5
NO05
+24V
COM4
NO04
+24V
COM3
NO03
+24V
COM2
NO02
+24V
COM1
NO01
+24V
COM1
NO01
24V Power
RELAY
+24V
COM15
NO015
+24V
COM14
NO014
+24V
COM13
NO013
+24V
COM12
NO012
+24V
COM11
NO011
+24V
COM10
NO010
+24V
COM09
NO009
+24V
COM09
NO009
O15
O14
O13
O12
O11
O10
O09
O08