4 end-limit signals pel and mel, End-limit signals pel and mel – ADLINK PCI-8158 User Manual
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Signal Connections
3.4 End-Limit Signals PEL and MEL
There are two end-limit signals PEL and MEL for each axis. PEL
indicates the end limit signal is in the plus direction and MEL indi-
cates the end limit signal is in the minus direction. The signal
names, pin numbers, and axis numbers are shown in the table
below:
A circuit diagram is shown in the diagram below. The external limit
switch should have a contact capacity of +24V @ 8mA minimum.
Either ‘A-type’ (normal open) contact or ‘B-type’ (normal closed)
contact switches can be used. To set the active logic of the exter-
nal limit signal, please refer to the explanation of
_8158_set_limit_logic function.
P1 Pin No Signal Name Axis # P1 Pin No Signal Name Axis #
37
PEL0
0
38
MEL0
0
43
PEL1
1
44
MEL1
1
87
PEL2
2
88
MEL2
2
93
PEL3
3
94
MEL3
3
P2 Pin No Signal Name Axis # P2 Pin No Signal Name Axis #
37
PEL4
4
38
MEL4
4
43
PEL5
5
44
MEL5
5
87
PEL6
6
88
MEL6
6
93
PEL7
7
94
MEL7
7