3.8 I/O Signals
A3-114
ME0384-4A
Features of Input and Output Signals for EC Connection Unit
The input and output signals for the EC connection unit are as shown below.
On means the applicable bit is "1" while off means "0".
[1] Movement command input backward end/forward end (ST0/ST1) PLC output signal
The ST signal function automatically switches depending on whether the unit has completed
home return or not.
Signal name
Signal
abbreviation
Function overview by status
Home return:
Not complete
Home return: Complete
Backward ST0
Home return operation
Backward
Forward ST1 Forward
[Home return status: Not complete]
● When the [ST0] signal is turned ON, home return operation begins.
● When the [ST1] signal is turned ON, as with the [ST0] signal, home return operation begins.
● Turning the ST signal OFF midway through home return operation will cause a gradual stop.
[Home return status: complete]
● When the ST signal is turned ON, the ELECYLINDER moves [Backward] and [Forward].
● While the ST signal is ON, operation will continue until the [Backward end] or [Forward end]
is reached.
● Turning the ST signal OFF midway through operation will cause a gradual stop.
Caution
● If stopped when the LS or PE signals are not ON, the ELECYLINDER may be stopped
on the way to the backward or forward end, or it may have stopped at the backward or
forward end during pressing operation with no contact.
We recommend first inputting the [ST0] signal and then performing the following
actions after returning to the backward end.
● If battery-less absolute specification (option) is selected, the home return complete
status is retained.
However, if the [Change home return direction] or [Adjust home position] parameters
are changed, home return status will be not-complete; perform homing (absolute reset).
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