Rockwell-automation 1738-AENTR, Series A 1734 POINT I/O and 1738 Armor Manual de usuario descargar pdf (Pagina 10)

2 Rockwell Automation Publication 1734-UM014B-EN-P - June 2013

Chapter 1 About the Adapters

About the POINT I/O and

ArmorPOINT I/O

2 Port Adapters

The POINT I/O and ArmorPOINT I/O adapters provide connectivity to

EtherNet/IP networks for POINT I/O and ArmorPOINT I/O modules

respectively.

The POINT I/O adapter is for the I/O backplane that provides connectivity

through two RJ-45 connectors for 2-port pass-through support of daisy chain or

ring, and the existing star and tree network topologies.

Likewise, the ArmorPOINT I/O adapter provides the same connectivity

through two M12 Ethernet-keyed connectors. It ships with a terminating base for

use in the last I/O module on the backplane.

Set the

Chassis Size

The I/O adapters for EtherNet/IP require configuration of their chassis size

before you can make any I/O connections. The factory default setting for the

chassis size is one slot, which represents the adapter by itself.

You must set the chassis size to a number equaling one slot for the adapter plus

one slot for each I/O module present in the backplane of the adapter.

For example, a POINT I/O system consisting of a 1734-AENTR adapter, one

1734-IB8, one 1734-OB8, and one 1734-OB8S POINT Guard I/O module uses

a chassis size of 4. The adapter stores this chassis size setting in non-volatile

memory.

Each time the adapter is powered up, the adapter compares the number of I/O

modules present on its backplane to the chassis size value from non-volatile

memory. The adapter does not allow any I/O connection until the number of I/

O modules present equals the chassis size value minus one for the adapter itself.

Adapter

Replacement

Note that during a connection request from the controller, the chassis size setting

is not communicated to the adapter. You must always set this chassis size using a

separate operation. This includes situations when you are replacing an adapter.

The adapter does not allow any I/O connections until it is configured with the

appropriate chassis size and the proper number of POINT I/O or

ArmorPOINT I/O modules are present.

Empty Slots and RIUP Situations

The POINT I/O system cannot detect an empty terminal base. For this reason,

there are numerous situations in which you can potentially configure a system

that is unusable or one that exercises unintended control.

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Rockwell-automation 1738-AENTR, Series A 1734 POINT I/O and 1738 Armor Manual de usuario Pagina 10