Rockwell Automation 1756-DHRIO_DHRIOXT ControlLogix Data Highway Plus-Remote I/O Communication Interface Module - Manual (Page 32)

32 Rockwell Automation Publication 1756-UM514C-EN-P - June 2014
Chapter 2 Using the Data Highway Plus Network
Configuration Information in
DH+ Messaging When you are using DH+ messaging, you must use the default configuration or
write configuration for your application.
The following configuration information is stored in the nonvolatile (NVS)
memory on your 1756-DHRIO and 1756-DHRIOXT modules when you apply
configuration by using the Studio 5000 environment:
• Any routing table that can be needed to send DH+ messages through the
module. - This information must be applied to the module’s configuration
separately from other information. Use RSLinx to apply the routing table.
For more information on routing tables, see page
49 .
• Controller slot for each DH+ channel - This information must be applied
to the module’s configuration separately from other information. For more
information on setting the controller slot, see page
51 .
• Slot number of the module
• Chassis serial number
Generate Configuration Faults
When you insert a 1756-DHRIO or 1756-DHRIOXT module in a
ControlLogix chassis, the configuration information stored in the module’s NVS
memory is compared to the slot and serial number of the chassis it is entering. If
any information does not match, the 1756-DHRIO or1756-DHRIOXT
module generates a configuration fault.
For a complete listing of the configuration faults that can be displayed on your
1756-DHRIO and 1756-DHRIOXT modules, see
Chapter 13 .
IMPORTANT If you restore defaults with Studio 5000 environment, the slot number and
chassis serial number are stored in the 1756-DHRIO and 1756-DHRIOXT
module’s nonvolatile memory, but no routing table is used and the
controller slot for the DH+ channels is set to 0.