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Appendix 4. Q&A
When running or debugging PLC, users may encounter some difficult problems due to lack of experience. This
part mainly aims at the problems that users are most likely to encounter, and puts forward solutions for users'
reference.
Q1
:
Why the coil is not set when the condition is satisfied
?
A1
:
The possible reasons:
(1) Users may use one coil for many times, which leads to double coils output. And at this time, the later
coil has priority.
(2) Coil may be reset, users can find the reset point by monitor function and modify the program.
Q2
:
Why PLC can not communicate with other devices
?
A2
:
The possible reasons:
(1) communication parameters: PLC com port and device parameters must be the same.
(2) communication cable: Confirm connection correct and good and change cable to try again.
(3) communication serial port: Check the port by downloading PLC program. Rule out this problem if
download successfully.
(4) contact manufacturer if all the above are ruled out.
Q3
:
How long can the PLC battery be used?
A3
:
Normally for 2~3 years.
Содержание XG Series
Страница 1: ...1 XG series PLC User manual Hardware Wuxi Xinje Electric Co Ltd Data No PG01 20210906EN 3 6...
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