Rockwell Automation 1756-IF4FXOF2F ControlLogix High-speed Analog I/O Module - Manual (Page 128)

128 Rockwell Automation Publication 1756-UM005B-EN-P - January 2013
Appendix C Use Message Instructions to Perform Run-time Services and Module Reconfiguration
Reconfigure the Module with
a Message Instruction You can use the Module Reconfigure message type to change the functional
operation of a high-speed analog I/O. With this message type, you make sure
changes in the process dictate when the reconfiguration takes place rather than
performing that function manually.
Considerations with the Module Reconfigure Message Type
Remember the following when using this method of module reconfiguration:
• All connections between the high-speed analog I/O module and any Logix
controllers (either the owner-controller or listen-only controllers) remain
open during the module reconfiguration.
• The module processes data during reconfiguration. If data changes occur
during reconfiguration, such as if the module receives new input data, the
application of that data is dependent on when it was received in the
reconfiguration process.
• Because the receipt of new data may occur at any point, the application
may occur according to parameters defined by the old configuration or the
new configuration.
• Changes to output parameters take place the first time new data is applied
to the outputs.