6-4
TI71M01D06-01EN 3rd Edition: 2012.12.01
(2) Types of I/O Signals
Physical (Hard) I/O
Physical (Hard) I/O refers to contact signals on the controller interface (CN4). The number of
hard I/O points and number of blocks vary with the type of the interface used. Each block
consists of 8 bits (8 different signal types).
Hard I/O Assignment Function
I/O contact signals can freely be assigned from a group of signals called logic I/O signals.
Perform the optimal assignment according to the application to avoid unnecessary signal
wiring. See Section 6.1.1 (4), "Physical (Hard) I/O Assignment, Logic Setting Method" for how
to set hard I/O and settings at shipment from the factory.
<Usage example>
It is desired to use the logic I/O signal OUT_JOG_EXE (in jog operation), which is not
assigned in the factory presetting, in the contact I/O interface. Therefore, the OUT_AREA 0
(area signal 0) signal, which will not be used, is removed from the assignment, and
OUT_JOG_EXE (in jog operation) will be assigned instead.
Hard I/O Logical Setting
It is possible to set the logic for each bit of I/O signals.
See Section 6.1.1 (4), "Physical (Hard) I/O Assignment, Logic Setting Method" for how to set
the logic.
The logic of all input contacts of the controller interface is set to positive logic at the time of
shipment from the factory.
When it is set to positive logic, a signal turns ON in the state where “current is conducted into
the photo-coupler” in the contact I/O interface.
The I/O output logic is set so that the transistor is turned ON when a signal turns ON.
<Usage example>
When it is desired to turn ON an immediate stop with the IN_EMG (immediate stop) signal
while a current is flowing into a photo-coupler in the contact I/O interface
Set the hard I/O logical setting to "positive logic."
When it is desired to turn the immediate stop ON while current is not conducted into the
photo-coupler
Set the hard I/O logical setting to "negative logic."