On the NX-8E, voltages of ☙ volts come out So, for example, you'll never find DB-9 pin 2 and pin 7Ĭoming from the same side of an RS-232 connection. RS-232 connector, pins 3, 4, 7 always come from the same side (the DTEĮquipment, such as a PC) and pins 2, 6, 8 always come from the other Has a lot correct, but has directions of signals wrong - on a standard Gets the pinout and pin functions correct. The pin 1 triangle is actually on the same side as the key notch.ī does make a good point differentiating the DTK/INTEL Has the diagram labeled wrong because pin 1 is shown on the opposite Has a square instead of round circuit board pad. Gets it right, showing the pin numbering and noting that pin 1 often A correct cable connector isīe careful about confusing information out on the web. Those cables won't fit onto the NX-8E connectorīecause the 10th pin will block it.
Important because some cable connections have the 10th pin blocked or
The last feature is (no kidding) the 10th pin. In the NX-8E as normally installed in aĬabinet, odd pins are toward the bottom and even pins are toward the That in the picture, all the pins toward you are odd, and all the pinsĪway from you are even. Is to start by the arrow and then hop back and forth on the rows, so The correct industry standard way to number the pins The next feature is the imprinted arrow or diamond,visible on the. Important to note that the red-striped wire should connect by the arrow Not have a notch, or the cable does not have a key, then it's even more Installed, the NX-8E has this on the bottom middle. One is the notch or opening on the side. If you were to look closer, you'd see a connector like the one shownīelow. My alarm controller box, on the lower left corner of the circuit board. Here's what the connector looks like, as installed in Required - only the physical wires to bring the signals to you As discussed below, the NX-8EĬonnector as shown in the photo below. Main circuit board in the same way serial port connections were done on It is a true serial port, made available on the The second method uses a serial port on the NX-8E that does not exist on the NX-8 These connect onto the same DATA/+/- terminals that aĮach provides an electrical interface that converts to an RS-232 One is to use the additional NX-584īoard interface, the NX-587E virtual keyboard, NX-588E USB dongleĭongle. The Interlogix NX-8E has two methods of doing serialĬommunication. writes, "Thank you for this pletely makes sense" (and was kind enough to send a totally unsolicited gift of a Pi Raspberry 4 and Kookye IOT sensor kit). 
writes, ".impressed by your depth of knowledge." writes: "Thank you for clarifying thisįebruary 2018, G.S. RS-232 Serial Communication and the NX-8E Home Security Alarmĭecember 2015, X.X.
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