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I would like to read some data from a serial barcode scanner using the CECC-S, on the RS232 serial ports. I am however Struggling to access the RX and TX pins in the codeysys software. The only info i receive from the help function is the libraries that i shoulld use. Could anyone please be of assistance if you have knowlegde on how to solve the problem.
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The system library SysCom23 is the one to use.
It includes the following POU's to do the communication.
SysComSettings - the settings are introduced to the block as a specific struct
SysComOpen - opens the port
SysComRead - reads from the RX pin
SysComWrite - writes to the TX pin
SysComClose - Closes the port
The most simple way is to make a sequence that first introduces the settings, then opens the port, writes or reads and closes the port.
There is no need for special HW-configuration. The first RS232 on the left is COM1 and the right one is COM2 as default.
The easiest way to test the COM-port is to make a direct connection from COM1 TX to COM2 RX.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
I would like to read some data from a serial barcode scanner using the CECC-S, on the RS232 serial ports. I am however Struggling to access the RX and TX pins in the codeysys software. The only info i receive from the help function is the libraries that i shoulld use. Could anyone please be of assistance if you have knowlegde on how to solve the problem.
This is actually quite simple:
The system library SysCom23 is the one to use.
It includes the following POU's to do the communication.
SysComSettings - the settings are introduced to the block as a specific struct
SysComOpen - opens the port
SysComRead - reads from the RX pin
SysComWrite - writes to the TX pin
SysComClose - Closes the port
The most simple way is to make a sequence that first introduces the settings, then opens the port, writes or reads and closes the port.
There is no need for special HW-configuration. The first RS232 on the left is COM1 and the right one is COM2 as default.
The easiest way to test the COM-port is to make a direct connection from COM1 TX to COM2 RX.