Chapter 4 Operation
4.6 How to Use Internal DIO
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4.6 How to Use Internal DIO
4.6.1 Internal DI and Dedicated Functions
Internal DI No. 001 to 006, 014 and 015 can be used as the dedicated functional ports (for such
as software reset) by the parameter settings. (They are not set to the dedicated functions at
delivery.)
To execute the dedicated functions, it is necessary to have the internal DI turned ON/OFF after
the parameter settings are established, but it cannot be controlled from the I/O connector. By
turning ON/OFF the internal DO corresponding to the internal DI, the dedicated functions can be
executed.
Refer to the table below for the correspondence of the port numbers of DO to the port numbers of
DI.
DO Port No. DI Port No. Special function Parameter No.
308 001 Software Reset IO Parameter No.031
309 002 Servo ON IO Parameter No.032
310 003 Automatic Startup IO Parameter No.033
311 004 Software Interlock IO Parameter No.034
312 005 Pause Release IO Parameter No.035
313 006 Pause IO Parameter No.036
314
014
Drive Source
Release Input
IO Parameter No.044
315 015 Home-return, etc. IO Parameter No.045
For example, when the SEL program below is executed, the input port number turns ON.
BTON 308
TIMW 1
EXIT
If DI No. 001 is set to the software reset input, the software reset (reboot) gets executed.
Refer to the parameter list for the details of the dedicated functions.
Caution: When a change is made to the input port number that the input function select ***
is to be assigned by setting “Input Function Select *** Physical Input Port Number”,
as the table above shows, the dedicated functions would not work while the
functions that turning ON/OFF of the Output Port No. 308 to 315 is reflected to
Input No. 1 to 6 and 14 to 15 are kept.
For instance, set “Input Function Select 001” = 1, “Input Function Select 001
Physical Input Port No.” = 16, and turn on Output Port No. 308, and then Input Port
No. 1 will turn on but the software reset would not be executed.
Please refer to “4.7 Standard Interface” for details.
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