Manual
LCom
Page 130 of 158
5.14 Test RS232
A simple test application for RS232 interfaces.
After opening the COM interface by c
licking “Connect” you can enter a text in the
input field and send
this to the serial interface by clicking “Send”.
The digital-IO module ports are shown on the right-hand side and the status of the
corresponding signals (on/off) can be set (for
“output” signals only).
Note: The DCU_RTS, DCU_DTR, DCU_CTS and DCU_DCD signals are
shown/processed here in RS232 logic. The RS232 logic is the opposite to the digital-
IO module logic, i.e. if a signal is “on” for the digital module, then it is “off” for the
RS232.
Switching the display off by deactivating the SHDN_CFL signal is handled by the
LCom like the activation of the screensaver, i.e. the display is switched back on when
a mouse button is pressed or the touch screen is touched.
