RS232 CM4 Industrial has a serial port with standard RS232. The wiring diagram of RS232 serial port is as follows:
Install ParallaxControlSystemLibrary nuget package.
See below console application example:
Run the application from console, or trigger it from the web page dashboard. In this example we are using a loopback test to receive the response (wire the Tx pin to the Rx pin).
pi@cm4-d83add8da9b7:~ $ ./ConsoleApp12
Hello, World!
/dev/ttyAMA5 registered!
val: testing
Program started.
info: Microsoft.Hosting.Lifetime[0]
Application started. Press Ctrl+C to shut down.
info: Microsoft.Hosting.Lifetime[0]
Hosting environment: Production
info: Microsoft.Hosting.Lifetime[0]
Content root path: /home/pi
Install node-red-node-serialport package from within the Node-RED dashboard (hamburger menu -> manage pallet)
In this example we are using a loopback test to receive the response (wire the Tx pin to the Rx pin).
Configure the ports according to the following port maps:
"RS485-1"=/dev/ttyAMA4
"RS485-2"=/dev/ttyAMA3
"RS232-1"=/dev/ttyAMA5
