20
•
Signal Connections
3.4 End-Limit Signals PEL and MEL
There are two end-limit signals PEL and MEL for one axis. PEL indicates
end limit signal in plus direction and MEL indicates end limit signal in
minus direction. The relative signal name, pin number and axis number
are shown in the following table.
CN2 Pin No Signal Name Axis # CN2 Pin No Signal Nam e
Axis #
37
PEL1
•
43
PEL2
‚
38
MEL1
•
44
MEL2
‚
The signals connection and relative circuit diagram is shown in the
following diagram. The external limit switches featuring a contact
capacity of +24V, 6mA minimum. You can use either ‘A -type’ (normal
open) contact switch or ‘B -type’ (normal closed) contact switch by setting
the DIP switch S1. The PCI-8132 is delivered with all bits of S1 set to OFF,
refer to section 2.10. For the details of the EL operation, please refer to
section 4.3.2.
EX+24V
I
f
=6mA Max.
Filter
Circuit
To PCL5023
PEL
MEL
4.7K
EXGND
Inside PCI-8132
CN2
ß
Switch
Содержание PCI-8132
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