CX8091 Embedded PC With BACnet/IP or OPC UA


The CX8091, part of the CX8000 line, is an embedded PC that represents a universal small controller for a wide range of applications through OPC UA protocol, a 400 MHz ARM9 CPU, and a wide range of connectable K-bus or E-bus I/O terminals. It is fully interoperable with power measuring terminals to serve as a compact data collector that supplies all information via OPC UA, enabling comprehensive energy management.


The PC is a flexible and compact controller with a switched Ethernet port and supports OPC UA, the established protocol for vertical integration within modern plant environments. Bus Terminals (K-bus) and EtherCAT terminals (E-bus), as modular I/O systems, can be connected directly to and automatically identified by the Embedded PC. In this way, a multitude of signals can be acquired locally. For example, via the numerous I/O terminals for energy data acquisition and many other types of measurement.


Electrical variables can be determined in a particularly convenient and system-integrated manner via the KL/EL3403 power measuring terminals; while more in-depth analysis functions are offered by the EL3413 and EL3433 power measuring terminals as well as the EL3773 mains monitoring terminal. In addition, compressed air supplies can be directly monitored, for example, to detect energy-wasting leaks using the KM37xx differential pressure measuring terminal and the machine-mountable EP3744 differential pressure measurement box with IP67 protection.


ProcessorARM9, 400 MHz
Number of Cores1
Flash Memory512 MB MicroSD
Main Memory64 MB DDR2 RAM
Persistent Memory1-second UPS
Programming LanguagesIEC 61131-3
Web VisualizationYes
Online ChangeYes
Up/Down Load CodeYes
Interfaces1 RJ45 10/100 Mbit/s, 1 USB device, 1 bus interface
Bus Interface2 RJ45 (switched)
Diagnostics LED1 TC status, 1 WD, 1 error
ClockInternal battery-backed clock for time and date
Operating SystemWindows Embedded CE 6
Control SoftwareTwinCAT 2 PLC
I/O ConnectionE-bus or K-bus, automatic recognition
Web-Based ManagementYes
Current Supply E-bus/K-bus2 A
Max. Power Consumption3 W
Dimensions (W x H x D)2.5 x 4 x 2.8 in.
WeightApprox. 180 g
Operating/Storage Temperature32 to 151°F
Relative Humidity95%, no condensation
Vibration/Shock ResistanceEN 60068-2-6/EN 60068-2-27
EMC Immunity/EmissionEN 61000-6-2/EN 61000-6-4
Protection RatingIP20
Approvals/MarkingsCE, UL, ATEX, IECEx, cFMus
Ex MarkingATEX:
II 3 G Ex nA IIC T4 Gc
II 3 D Ex tc IIIC T135 °C Dc
Ex nA IIC T4 Gc
Ex tc IIIC T135°C Dc
Class I, Division 2, Groups A, B, C, D
Class I, Zone 2, AEx ec IIC T4 Gc
Be the first to review this product
Add your review: