Beckhoff CU2508 - CU2508 Technical Specifications

Product overview
Real-time Ethernet port multiplier 15
Version: 2.6
2.2 Technical data
Technical data CU2508
Operating voltage 24 (18...30) V
DC
, 250 mA, 3-pin connector (+, -, PE)
Number of Ethernet ports 8 x 100Mbit/s (100BASE-TX) and 1 x 1Gbit/s (1000BASE-T, Uplink)
Ethernet interface RJ 45
Cable length up to 100m, min. CAT5 twisted-pair, shielded
Diagnosis via LED, software
Protocols depends on used CU2508 driver
TwinCAT: Ethernet TCP/IP; real-time protocols: EtherCAT,
PROFINET, RT Ethernet etc.
TwinCAT support TwinCAT from version 2.11R2 (build 2028)
Operating systems XP/7/WES and CE/WEC
Electrical isolation 1,500 V
Weight approx. 500 g
permissible ambient temperature
range during operation
0°C ... + 55°C
permissible ambient temperature
range during storage
-25°C ... + 85°C
permissible relative humidity 95%, no condensation
Dimensions [}23] (W x H x D)
approx. 146 mm x 100 mm x 30 mm
Mounting [}24]
on 35 mm mounting rail conforms to EN 60715
Vibration/shock resistance conforms to EN 60068-2-6 / EN 60068-2-27
EMC immunity/emission conforms to EN 61000-6-2 / EN 61000-6-4
Protection class IP20
Installation position variable
Approval CE
cULus [
}28]
2.3 Technology
Introduction
As a port multiplier that is as transparent as possible, the CU2508 extends one Gbit Ethernet port on the
controller to 8 FastEthernet ports in the field. It transports IEEE802.3 conformant Ethernet frames with
arbitrary contents.
Each port of the CU2508 sends and receives FastEthernet frames (100 Mbit, 100BASE-TX) over up to 100
m of copper cable/RJ45. The CU2508 does not generate or process the contents of any frames itself;
instead, it exclusively forwards frames sent to it by a special software driver to the field selectively via its 8
ports or forwards frames received from the field to the driver. The highly precise time information regarding
when the frames are sent or received is thereby optional.
To this end, the CU2508 has at its disposal
• the Uplink Gbit Master Port (X9) to the driver in the controller, which needs a Gbit connection at the
opposite end
• 8 equivalent 10/100 Mbit downlink ports (X1-X8) for the real-time traffic to the connected field devices
A CU2508 system thus consists of the CU2508 device and the CU2508 driver, e.g. integrated in TwinCAT
2.11R2 or TwinCAT 3.