Rockwell Automation 1769-ASCII Compact I/O ASCII Module - Manual (Page 27)

Rockwell Automation Publication 1769-UM012B-EN-P - January 2014 27
Configure the 1769-ASCII Module Chapter 2
Table 2 - Connection Tab Descriptions
Parameter Descriptions
RPI Enter the requested rate of packet arrival (connection update rate). The RPI specifies the interval at which data is transmitted or received
over a connection. When scanned on the local bus or over an EtherNet/IP network, I/O modules are scanned at the RPI specified in the
module configuration.
Typically, you configure an RPI in milliseconds (ms). The connection is scheduled to move data to or from the module at least this often or
the connection fails with the Connection Not Scheduled fault. The minimum and maximum RPI values are shown parenthetically to the
right of the box/spin control.
Major Fault on Controller If Connection
Fails While in Run Mode This option determines how the controller is affected if the connection to an I/O module fails in Run mode or if the controller is unable to
establish a connection to the module. You can configure the project so that a connection failure causes a major fault on the controller or
not. The default setting is for the option to be disabled.
For example, if this option is enabled and an I/O module is removed while in Run mode, a major fault occurs on the controller. The default
setting for the embedded I/O module is that this option is enabled. The default setting for local expansion modules is that this option is
disabled.
Inhibit Module Check or Uncheck this box to inhibit/uninhibit your connection to the module. Inhibiting the module causes the connection to the
module to be broken and may result in lost data. If the module is inhibited, the module in the controller organizer displays the attention
icon.
If you inhibit the module while you are online and connected to the module, the connection to the module is nicely closed. The module's
outputs will go to the last configured Program mode state.
• If you inhibit the module while online but a connection to the module has not been established (due to an error condition or fault),
the module is inhibited. The module status information changes to indicate that the module is 'Inhibited' and not 'Faulted'.
• If you uninhibit a module (clear the checkbox) while online, and no fault condition occurs, a connection is made to the module and the
module is dynamically reconfigured (if you are the owner controller) with the configuration you have created for that module. If you
are a listener (have chosen a ‘Listen Only’ Communications Format), you cannot re-configure the module.
• If you uninhibit a module while online and a fault condition occurs, a connection is not made to the module.
Module Fault View module faults.
These are some common message that you may see in the Module Fault area.
Connection Request Error
The controller is attempting to make a connection to the module and has received an error. The connection was not made.
Service Request Error
The controller is attempting to request a service from the module and has received an error. The service was not performed successfully.
Module Configuration Invalid
The configuration in the module is invalid. (This error is commonly caused by the Electronic Key Passed fault.)
Electronic Keying Mismatch
Electronic Keying is enabled and some part of the keying information differs between the software and the module.