Lenze E94P PositionServo Modbus - Manual (Page 13)

13 P94MOD01C
Installation
3.3.5 Connections and Shielding: Ethernet
The use of pre-fabricated cables is recommended as this reduces the chances of connections mistakes and
poor quality connections.
If cable connections are assembled on site then it is strongly recommended that these cables are tested with
a suitable Ethernet cable tester
STP cables are the preferred solution as they provide a screen/shield surrounding the inner cores and have an
integrated screened surround on the RJ45 connector for quick and easy connection.
Figure 5: CAT5e STP Cable
Images ©2000-2009 Belkin International, Inc
3.3.6 Network Termination: EIA-485
In high speed (EIA-485) networks (typically 19.2kbps or higher) it is essential to install the specified termination
resistors, i.e. one at both ends of a network segment. Failure to do so will result in signals being reflected back
along the cable which will cause data corruption. A 120
W 1% ¼W resistor should be fitted to both ends of a
network segment across the TxA and TxB lines.
120 Ω
¼ W
Connect to
cubical panel/
earth (PE) as
close to drive
as possible
Figure 6: EIA-485 (RS485) Network Termination
3.3.7 Network Termination: Ethernet
Ethernet network cable termination is not required as it is integrated into the circuitry of each device’s RJ45
port.