Model SH-2012AH-QG
Cutting Machine
（
C002
）
37
10.3
Definitions of Input/Output Ports
Signal
definition
25-pin
port(socket)
Description
>W+
1
X/Y+ limits, two positive axial travel limits connected in series, high priority. Please jump the
signal to 24V ground if not use.
W-<
14
X/Y-limits, two negative axial travel limits connected in series, high priority. Please
jump the signal to 24V ground if not use.
STA
2
External starting key, high in effect. Please jump the signal to 24V ground if not use.
RET
15
External backspace key, high priority. Please jump the signal to 24V ground if not use.
DLZ
3
Arc voltage test, normally low priority, but high priority when arc voltage is not enabled.
STO
16
External emergency stop key, high priority. Please jump it to 24V ground if not use.
PAU
4
External pause key, high priority. Please jump it to 24V ground if not use.
XXW
17
Lower limit for plasma torch positioning operation
5
NO contact output of height-control corner signal relay(auto/manual switch for height
control).
18
NO contact output of arc ignition signal relay
6
Common port for COM(OH1/OH2/OH3/OH4) isolation output
19
NO contact for lowering operation(OH4) of cutting torch with height controller
7
NO contact for lifting operation(OH3) of cutting torch with height controller
20
NC contact for lowering operation(OH4) of cutting torch with height controller
8
NC contact for lifting operation(OH3) of cutting torch with height controller
M10/M11
or
M38/M39
21
Flame cutting: M38 height control; M38 for ON and M39 for OFF
Plasma cutting: M10 reserve; M10 for ON and M11 for OFF
M20/M21
9
M20(ON) and M21(OFF). In flame mode, used for ignition switch; in plasma mode,
always ON when ignition delay is 0 acting as flame/plasma selective switch.
M22/M23
22
Reserved
M24/M25
10
Reserved
23
NC contact for corner(OH1)
11
NC contact for cutting oxygen(OH2)
24V
24
+24V/1A power supply
24V
12
+24V/1A power supply
24V
地
25
Ground for 24V power supply
24V
地
13
Ground for 24V power supply
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