User`s guide

28 • Signal Connection
3.6 End-Limit signals PEL and MEL
There are two end-limit signals PEL and MEL for each axis. PEL indicates
end limit signal in plus direction and MEL indicates end limit signal in minus
direction. The following table is the pin assignment for EL signal.
CN1 Pin No. Signal Name Description Alternative Name
6 COM+ Ext +24V COM+
7 COM+ Ext +24V COM+
8 COM+ Ext +24V COM+
10 PEL1 End limit (+) • DI 7
11 MEL1 End limit (-) • DI 8
60 PEL2 End limit (+) ‚ DI 9
61 MEL2 End limit (-) ‚ DI 10
14 PEL3 End limit (+) ƒ DI 11
15 MEL3 End limit (-) ƒ DI 12
64 PEL4 End limit (+) „ DI 13
65 MEL4 End limit (-) „ DI 14
18 PEL5 End limit (+) … DI 15
19 MEL5 End limit (-) … DI 16
68 PEL6 End limit (+) † DI 17
69 MEL6 End limit (-) † DI 18
55 COM- Ext Common Ground COM-
56 COM- Ext Common Ground COM-
Notice that the alternative name means that if users don’t use motion
functions at one or more axes, the digital input will be treated as general
purpose input channel.
The signal connections and relative circuit diagram are shown in the following
diagram. The external limit switches features 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 software setting.
Figure 3.6.1 Connection of EL signal