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LD
When programming with structured text, enter the following:
ST
IF
DF(bCountUp)
SYS1('HSC0,UP');
SYS1('HSCB,UP');
End_If;
IF
DF(bCountDown)
Then
SYS1('HSC0,DOWN');
SYS1('HSC7,DOWN');
End_If;
RS485
Response
Time Control
This changes the communication conditions based on the RS485 of the COM port or Tool port, in
response to the contents specified by the character constant.
The port response time specified by the first keyword is delayed based on the contents specified by
the second keyword. This instruction is used to delay the response time on the PLC side until the
state is reached in which commands can be sent by an external device and responses can be
received from the PLC.
The first and second keywords are separated by a comma.
Then
System register instructions
991
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