Allen-Bradley PanelView Plus 2711P, User Manual, Page: 122 / 170

Publication 2711P-UM001B-EN-P
6-10 Terminal Connections
Cables
Category 5 shielded and unshielded twisted-pair cables with RJ45
connectors are supported. If 100 Mbit/second data rates are used, we
recommend that you use a shielded cable. The shielded cable will
help insure that industrial noise immunity levels are maintained. The
maximum cable length between the terminal’s Ethernet port and a
10/100Base-T port on an Ethernet hub (without repeaters or fiber) is
100 meters (328 feet). In industrial applications, keep the cable length
to a minimum.
Security Considerations
IGMP (Internet Group Management Protocol) is used for IPv4
multicast. A multicast is communication between a single sender and
multiple receivers on a network. IGMP is used to exchange
membership status data between IPv4 routers that support
multicasting and members of multicast groups. A router is an
intermediary device on a communication network that expedites
message delivery by finding the most efficient route for a message
packet within a network, or by routing packets from one sub-network
to another. A sub-network is a separate part of an organization’s
network identified through IP addressing.
PanelView Plus terminals provide level 2 (full) support for IPv4
multicasting (IGMP version 2) as described in RFC 1112 and RFC 2236.
Note: SNMP (Simple Network Management Protocol) is used for
internal network management and is not supported.
Ports 137 and 138 are normally open to support the NetBIOS protocol
used by Windows CE.NET similar to other Microsoft and IBM network
operating systems.
WARNING
!
If you connect or disconnect the Ethernet cable with
power applied to the PanelView Plus or any device
on the network, an electrical arc can occur. This
could cause an explosion in hazardous location
installations. Be sure that power is removed or the
area is nonhazardous before proceeding.