Bradley Smoker 1734-AENT manual Adapter Replacement, Empty Slots and Riup Situations

1-2About the Adapter

You must set the chassis size to a number equaling 1 slot for the adapter plus 1 slot for each I/O module present in the adapter’s backplane. For example, the adapter plus 4 I/O modules uses a chassis size of 5. The adapter stores this chassis size setting in non-volatile storage.

When the adapter’s non-volatile chassis size does not match the actual number of modules present on its backplane, the adapter does not make any I/O connections and an error occurs, as shown in the Module Properties dialog.

Adapter Replacement

It is important to note that during a connection request from the controller, the chassis size setting for a 1734-AENT adapter 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 make any I/O connections until it is configured with the appropriate chassis size.

Empty Slots and RIUP Situations

The POINT I/O system does not have the ability to detect an empty terminal base. Because of this, there are numerous situations in which you can potentially configure a system that is unusable or one that exercises unintended control.

In an attempt to address these situations, you must observe the following rules for POINT I/O system construction and the removal and reinsertion of modules.

Publication 1734-UM011C-EN-P - January 2006