MN1941WEN Input / Output 4-27
4.6.3 Ethernet connectors
Ethernet connections are made using the identical RJ45 Ethernet receptacles.
To connect the NextMove e100 to other EPL devices use CAT5e Ethernet cables - either S/
UTP (unshielded screened/foiled twisted pairs) or preferably S/FTP (fully shielded screened/
foiled twisted pairs). To ensure CE compliance, Ethernet cables longer than 3 m should be S/
FTP cables bonded to the metal backplane at both endes using conductive clamps (see
section C.1.5). Cables may be up to 100 m (328 ft) long. Two varieties of CAT5e cable are
available; ‘straight’ or ‘crossed’. Straight cables have the TX pins of the connector at one end
of the cable wired to the TX pins of the RJ45 connector at the other end of the cable.
Crossover cables have the TX pins of the connector at one end of the cable wired to the RX
pins of the RJ45 connector at the other end of the cable.
Provided the network consists of only ABB EPL controllers and drives (and any hub), straight
or crossed cables may be used. This is because many Ethernet devices, including hubs and
all ABB EPL products, incorporate Auto-MDIX switching technology which automatically
compensates for the wiring of the straight cable. However, if other manufacturer’s EPL nodes
are included in the EPL network, crossover cables should be used as recommended by the
Ethernet POWERLINK Standardization Group (EPSG).
The NextMove e100 Ethernet interface is galvanically isolated from the rest of the
NextMove e100 circuitry by magnetic isolation modules incorporated in each of the Ethernet
connectors. This provides protection up to 1.5 kV. The connector/cable screen is connected
directly to the chassis earth of the NextMove e100. For additional noise immunity, especially
where Ethernet cables are frequently unplugged, it is recommended to clamp the outer
shields of Ethernet cables to an earth point. Termination components are incorporated in
each of the Ethernet connectors, so no further termination is required.
The EPL network supports the 100Base-TX (100 Mbit/s) system only, so attempting to
connect slower 10Base-T (10 Mbit/s) nodes will cause a network error.
Location E1 & E2
Pin Name Description
1 TX+ Transmit+
2 TX- Transmit-
3RX+ Receive+
4 - (NC)
5 - (NC)
6RX- Receive-
7 - (NC)
8 - (NC)
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