Address In The Devicenet Network; Termination Resistors; Cables; Installation Recommendations - WEG CFW-11 User Manual

Anybus-cc

Hide thumbs Also See for CFW-11:

Table of Contents

All the equipment of the network must be set to use the same communication rate.

Address in the DeviceNet network

Every device in the Anybus-CC network must have an address, or MAC ID, between 0 and 63. This address

must be different for each device.

The use of termination resistors at the ends of the CAN bus is essential to prevent reflection in the line, which

may damage the signal transmitted and cause errors in the communication. Termination resistors of 121 Ω /

0.25 W must be connected between the signals CAN_H and CAN_L at the ends of the main bus.

A shielded cable must be used with two pairs of wires, as specified in the DeviceNet protocol.

In order to interconnect the network nodes, it is recommended the connection of the equipment directly from

the main line, without the use of derivations. If you use derivations, the limits of length for derivation defined by

the DeviceNet specification must be observed. During the installation of the cables, you must avoid passing

them close to power cables, since that can cause errors during the transmission due to electromagnetic

interference.

Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: info@clrwtr.com

Table 2.5: Communication rates supported and cable length

Communication

Rate

500 Kbit/s

250 Kbit/s

125 Kbit/s

Figure 2.1: Example of installation of the termination resistor

Figure 2.2: Example of installation in DeviceNet network

Length of the

cable

100 m

250 m

500 m

Table of Contents