Rockwell Automation 1756-RIO ControlLogix Remote I/O Communication Interface Module User Manual - Manual (Page 26)

26 Publication 1756-UM534B-EN-P - November 2010
Chapter 1 The 1756-RIO Module-Getting Started
Module Definition Dialog Box
Item Description
Series Module series letter.
Revision Firmware revision number.
Electronic Keying Exact Match: requires all keying attributes of the physical module and the module created in the software to
match precisely to establish communication.
Compatible Module: the module determines whether to accept or reject communication. Compatible Keying
allows the physical module to accept the key of the module configured in the software, provided that the
configured module is one the physical module is capable of emulating. This is the default setting.
Disabled Keying: indicates the keying attributes are not considered when attempting to communicate with a
module. Be extremely cautious when using this option; if used incorrectly, this option can lead to personal injury
or death, property damage, or economic loss.
Mode - Scanner or
Adapter The module ships in scanner mode. (The 4-character display on the front of the module also indicates which mode
is set.) If you want to change the mode setting, you must first select the desired mode in the add-on profile on the
Module Definition dialog box from the pull-down menu, so that the correct configuration tool starts. Then, on the
Remote I/O tab, you must click on the Configure Remote I/O devices button (the configuration tool), and select the
Tools menu>Set 1756-RIO Module/Scanner mode to download the correct firmware.
Be aware that changing the module mode downloads firmware specific to the mode chosen. This mode setting
must match between the RSLogix 5000 programming software project and the configuration tool, but keep in
mind that the correct firmware must also be downloaded.
Input Tags - Output
Tags Up to 10 input and output tags can be selected. Each tag is 248 words. The number of input/output tags entered
in the add-on profile’s Module Properties has to be equal or greater than the number of tags in the configuration
tool.
The number of tags in the configuration tool are determined by the mappings you create. The more tags you have,
the more backplane traffic is generated. It’s best to keep the number of tags low, which is what the automatic
mapping command does, by mapping the data and packing it into the lowest number of tags.
For example, a single rack with discrete data that has the inputs/outputs mapped to block 9 requires the input/
output tags to be 10. So, in the Module Properties>General tab>Module Definition>Change button, select 10 for
the number of input and output tags.