Bronkhorst EtherCAT - Manual (Page 11)

BRONKHORST ®
3.5 R
OUTING AND SHIELDING THE BUS CABLE
Only use shielded cables and connection elements that also meet the requirements of category 5, class 2 according to
IEC11801, edition 2.0.
Correct shielding of the bus cable attenuates electrical interference that may occur in industrial environments. The
following measures ensure the best possible shielding:
• Manual tighten the mounting screws on the connectors, modules, and equipotential bonding conductors.
• Use only connectors with a metal housing or a metalized housing.
• Connect the shielding in the connector over a wide surface area.
• Apply the shielding of the bus cables on both ends.
• Route signal and bus cables in separate cable ducts. Do not route them parallel to power cables (motor leads)
• Route the signal cable and the corresponding equipotential bonding, if necessary, close to each other using
the shortest possible route.
• Route the bus cable closely along existing grounding surfaces.
In case of fluctuations in the ground potential, a compensating current may flow via the bilaterally
connected shield that is also connected to the protective earth (PE). Make sure you supply adequate
equipotential bonding in such a case.
3.6 B
US TERMINATION
A bus terminator (e.g. using bus terminating resistors) is not necessary. If no follow-up unit is connected to an
EtherCAT unit, this is automatically detected.
3.7 S
ECOND
A
DDRESS SETUP
EtherCAT supports the use of a Second Address. Bronkhorst instruments have 3 rotary switches, with which a Second
Address can be set in the range of 0 – 4095 (0xFFF).
This value of the rotary switches will be copied to the Configured Station Alias register (address 0x0012:0x0013) at
instrument start-up.
Page 11 EtherCAT interface 9.17.063