NX 8E Serial Connector Pinout

Timo Kokkonen edited this page Aug 30, 2015 · 3 revisions

NX-8E Serial (RS-232) Connector Pinout

NX-8E serial connector is a 10 pin IDC male connector on the alarm panel circuit board. It is easiest usually to use an adapter cable to convert this to a standard 9-pin (DE-9) RS-232 connector.

Pinout on the connector uses the so called "DTK/INTEL" PC motherboard pinout. So ready-made adapter cables are rather easy to find. WARNING! There is alternate pinout used on some PC motherboards (AT/EVEREX), ready made cables following this standard will not work, but are often easy to modify with little bit of soldering...

NX-8E RS-232 pinouts

Signal Name IDC connector pin Direction DE-9 connector pin Signal Name
N/C 1 1 DCD (not used)
N/C 2 6 DSR (not used)
TX 3 NX-->PC 2 RX
CTS 4 NX-->PC 7 RTS
RX 5 NX<--PC 3 TX
RTS 6 NX<--PC 8 CTS
N/C 7 4 DTR (not used)
N/C 8 9 RI (not used)
GND 9 NX<->PC 5 GND
N/C 10 N/A not used

Cabling notes

When using standard motherboard ribbon cable with NX-8E, typically also a straight through serial cable (DE-9 female to DE-9 female) will be needed. Alternatively DE-9 (female to female) gender changer can be handy if planning on connecting USB to Serial adapter.

You can’t perform that action at this time.
You signed in with another tab or window. Reload to refresh your session. You signed out in another tab or window. Reload to refresh your session.
Press h to open a hovercard with more details.