Rockwell Automation 1756-DHRIO_DHRIOXT ControlLogix Data Highway Plus-Remote I/O Communication Interface Module User Manual
Page 116
 
116
Rockwell Automation Publication 1756-UM514C-EN-P - June 2014
Chapter 10
Using the Studio 5000 Environment in Remote I /O and Block Transfer Applications
Naming Screen (first 
screen):
Parameter:
Definition:
Name
Module name. This field is required.
Description
Optional description of the module.
Slot
Location of module in the chassis.
Type
Application for each module channel. This field must be changed to RIO.
Baud Rate
Rate of communication at which the 1756-DHRIO module scans the remote 
I/O. Available options are:
• 57.6K bps
• 115.2K bps
• 230.4K bps
Revision
Minor revision of the 1756-DHRIO or 1756-DHRIOXT module.
Electronic Keying
Parameter that determines if the controller that owns the 1756-DHRIO or 
1756-DHRIOXT module establishes a connection with the module. The 
options are:
• Compatible Module - Controller attempts to establish a connection with 
any module in this slot that can emulate the configuration being sent 
from the controller.
• Disable Keying - Controller attempts to establish a connection to the
module regardless of its type. This option is not recommended.
• Exact Match - Controller only attempts to establish a connection with the
module if it matches the configuration parameters being sent from the 
controller.
Requested Packet 
Interval Screen 
(second screen):
Parameter:
Definition:
Requested Packet 
Interval
User-defined rate (2…750ms) that determines the rate at which the 
module scans data from the remote I/O.
Inhibit Module
Feature that lets you configure a 1756-DHRIO or 1756-DHRIOXT module but 
prevent it from communicating with the controller. In this case, the 
controller does not establish a connection until the module is uninhibited.
Major Fault on 
Controller if 
Connection Fails in Run 
Mode
Use this feature to choose whether a major fault occurs on the controller if 
the connection between the controller and the 1756-DHRIO or 
1756-DHRIOXT module fails.