
6. CONNECTION OF I/O UNITS TO
MACHINE INTERFACE
B–63783EN/01
220
If the CNC diagnoses that output does not turn ON even though it is ON,
a probable cause is that overloading of that output or other output in the
same element is causing the eight outputs of that element to stay OFF. If
this is the case, power the system OFF, and remove the cause of the
overload.
Driver device internal block diagram
CONTROL
LOGIC
OCD
IN#0
OUT#0
OHD
CONTROL
LOGIC
OCD
IN#1
OUT#1
CONTROL
LOGIC
OCD
IN#7
OUT#7
.
.
.
.
.
.
.
.
.
.
.
.
DOCOM
OHD: Overheat detection circuit OCD: Overcurrent detection circuit
The power supply for operation of this driver device is DOCOM (24 VDC).
(c) Output signal precautions
The figure below shows the precautions when connecting output
signals. Parallel connection of output terminals shown like that
shown in this figure is prohibited.
DV
DV
0 V+24 V
Relay
0 V
DOCOM