For a project i want to connect a Modicon m241 to a brightsign device. The M241 will send a serial message to the brightsign player every minutes to trigger an event.
I have tested both devices seperately using hercules and it seemsto work just fine. However it doesn't work when i hook up the modicon to the brightsign. So it seems to me that the cable is the problem. I used an RJ45 to Dsub De9 cable that has the following pinout
does anyone know what could be the problem?
the serial settings on both devices are:
data bits: 7
stop bits: 1