Serial Ports on Axcent3 and NI
bano Posts: 173
in AMX Hardware
Can someone please explain the difference between a serial port on an Axcent 3 and an NI controller? I integrated a DSC Maxsys security system into a project, initially assigned to an Axcent3 but it didn’t work. However when I reassigned the Maxsys to a serial port on the NI it worked perfectly. I swapped ports with a receiver and now both devices work, so I know it’s not a bad port. Only differences are baud rates (2400 on Maxsys, 9600 on receiver) and use of RTS connection on pin 7 for Maxsys. AMX Engineering please feel free to chime in.
Failing that, it could just be a bad port. There is no difference I'm aware of between the NI and Axcent3 when it comes to serial ports. If it was the NI that wasn't working, I'd say you had the bad capacitor problem, but it's not like Axcent3 ports never burned out either. Most times I've had them fail there was a static discharge on the connected wire.
It can't be a bad port on the Axcent3 as it is now controlling a receiver. No changes in software beyond port assignments in define device. Baudrate set in Online Event. Same wiring. All I did was to swap ports with the NI and Axcent3.
I'm using a Netlinx module for the maxsys which defines serial port parameters online. I've used this module several times on NI controllers, but never on an Axcent3. It was more of a nuisance than crisis as the controllers were stacked in a rack making it easy to swap ports.