Wiring Rules - Siemens SCALANCE XR-100WG Series Operating Instructions Manual

Connecting up

4.3 Wiring rules

Autonegotiation
Autonegotiation means the automatic detection/negotiation of the transmission rate and the
operating mode of ports at the opposite end. This makes it possible to configure different
devices automatically.
Two components connected to a link segment can exchange information about the transfer
and can adapt their settings to each other. The mode with the highest possible speed is set.
Note
• If a port operating in the "Auto negotiation" mode is connected to a partner port that is not
operating in the"Auto negotiation" mode, the partner port setting must be fixed.
• Devices not supporting "Auto negotiation" must be set permanently to 100 Mbps or
10 Mbps half duplex.
4.3 Wiring rules
When wiring, use cables with the following AWG* categories or cross sections.
Wiring rules for ...
connectable cable cross
sections for flexible cables ...
Stripped length of the cable
Wire end ferrule according to DIN 46228 with plastic ferrule**
* AWG: American Wire Gauge
** See note "Wire end ferrules"
Note
Wire end ferrules
Use crimp shapes with smooth surfaces, such as provided by square and trapeze shaped
crimp cross sections.
Crimp shapes with wave-shaped profile are unsuitable.
24
without wire end ferrule
with wire end ferrule**
with TWIN wire end ferrule**
Operating Instructions, 05/2017, C79000-G8976-C455-01
Spring-loaded terminals
0.75 - 2.5 mm
2
AWG: 20 - 14
0.75 - 2.5 mm
2
AWG: 20 - 14
0.75 - 1 mm
2
AWG: 20 - 18
8 - 10 mm
8 - 10 mm
SCALANCE XR-100WG