
7. Others
7.1 DO signal reaction to a system alarm
If a system alarm occurs in a CNC using terminal type I/O module, or if I/O Link
communication between the CNC and terminal type I/O module fails, all the DO
signals of the I/O module are turned off. Therefore, due care must be taken when
setting up the machine sequence. Also, the same phenomenon occurs if the power
to the CNC or the I/O module is turned off.
7.2 Parallel DO (output signal) connection
A DO load current of twice the level can be obtained by connecting DO points in
parallel and exercising ON/OFF control at the same time in the sequence. Namely,
the maximum load current per DO point is 200mA. By connecting two DO points in
parallel and turning on the two DO points at the same time, 400mA can be
obtained. In this case, however, the leakage current is doubled up to 40
µA when
the DO points are turned off.
Please assign the bit turned on and off at the same time in the same address.
(For example, bit0 and bit1 in address Yn+2.)
EDIT
SHEET
DRAW. NO.
CUST
TITLE
28/28
DESCRIPTION DESIG. DATE
TERMINAL TYPE I/O MODULE
CONNECTING MANUAL
-86491E
Terminal type I/O module
LOAD