User Manual User guide

97Publication 1756-UM534B-EN-P - November 2010 97
Chapter 5
Monitor Remote I/O
Introduction
Now that the module configuration is complete and downloaded to the 1756-
RIO module, you are ready to scan a Remote I/O network.
Remote I/O scanning uses a 1756-RIO scanner in a local or remote chassis
and multiple adapters on a Remote I/O network. The scanner enables
communication between a ControlLogix controller and the remote I/O
devices. The 1756-RIO scanner continually gathers and sends information to
and from remote adapters on the Remote I/O network and sends that
information to the ControlLogix controller in the chassis.
Remote I/O monitoring uses a 1756-RIO module in adapter mode to ‘listen’
to remote I/O and communicate that I/O back to the ControlLogix
controller.
Within the configuration tool there are four utilities to monitor I/O:
• DiscMon monitors discrete input and output data
• BtMon monitors block transfers
• DiagMon monitors diagnostic counters
• LogMon monitors the scanner log
In this chapter, you will:
• use scan and monitor modes.
• monitor remote I/O discrete inputs and outputs in scanner mode.
• monitor remote I/O discrete inputs and outputs in adapter mode.
• monitor block transfers.
• export scanner configurations.
• use the diagnostic utilities in the configuration software to monitor,
save, and clear diagnostics.
Topic Page
Commission Summary 98
Scan Mode and Monitor Mode 99
Monitor Discrete Inputs and Outputs 101
Monitor Block Transfers 108
Export Scanner Configurations 115
Other Diagnostics 117