Module Keying - Rockwell Automation Allen-Bradley 1715-AENTR User Manual

Module Keying

The adapter has four autosensing 10/100BASE-TX Ethernet ports for
connecting to a local area network through a minimum Cat5e shielded twisted
pair (STP) Ethernet cable. There are two ports for each adapter.
IMPORTANT The 1715 Redundant I/O System requires the use of a minimum
Cat5e shielded twisted pair (STP) Ethernet cable.
The adapter Ethernet ports are on the 1715-A2A adapter base unit and are
identified in this table.
Table 11 - Allocation of 10/100BASE-TX Ports to Adapters
1715-AENTR Adapter
Adapter A
Adapter B (where present)
IMPORTANT Most network connections use straight-through cables.
Crossover cables are not needed due to the intelligence or
functionality of the switch. If a direct connection is required
from the adapter to the personal computer (for example, during
setup), it can be necessary to use a crossover cable. This
depends on the characteristics of the interface in the personal
computer.
The fixed connectors on the adapter are female RJ45 modular jacks. Use a
minimum Cat5e shielded twisted pair (STP) cable with male RJ45 modular
jacks for network cabling.
Connect the network cables to the sockets on the 1715-A2A adapter base unit.
To connect the adapter to the Ethernet network, follow these steps.
1. Insert the RJ45 modular jack on the cable into the appropriate socket for
each network connection.
2. Make sure that the length of the cable does not exceed 100 m (328 ft).
Module keying, or polarization, prevents the wrong module from being
inserted into the wrong base unit. Modules are supplied with coding pegs that
are already fitted, so the modules are already 'keyed'.
Electronic Keying is used within the Logix Designer application. See
Electronic Keying on page 100
Rockwell Automation Publication 1715-UM001J-EN-P - December 2020
Chapter 2
10/100BASE-TX Ports
A1, A2
B1, B2
for more information.
Installation Instructions
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