Rockwell Automation GMLC Reference Manual - Manual (Page 718)

Publication GMLC-5.2 - November 1999
Chapter
34
Using the RIO Adapter Option
The Remote I/O option provides RIO Adapter functionality for the 1394
GMC/GMC Turbo, Compact, Integrated, and Basic motion controllers.
For IMC-S/20x-R and IMC/S21x-R models, the Remote I/O option also
provides Scanner functionality. Either way, this option allows the motion
controller to communicate directly with an Allen-Bradley PLC or host
computer via RIO.
When configured as an Adapter, the motion controller can communicate
directly with an A-B PLC using both discrete and block transfers.
When configured as a scanner, IMC-S/20x-R and IMC/S21x-R model
motion controllers can:
• Communicate directly to an operator interface (such as Panelview).
• Communicate directly to another IMC-S/20x-R and/or IMC/s21x-R
model motion controller.
• Distribute discrete I/O (such as 1791 block I/O or 1794 Flex I/O).
When configured as a scanner, the motion controller can communicate
with up to one full rack of discrete I/O at a single address.
This chapter focuses on the RIO Adapter option.
Using the RIO adapter, certain aspects of the motion controller can be
controlled and monitored from the PLC. Both discrete and block transfers
are available.
Discrete Transfers
Discrete transfers are used for the exchange of real-time data via discrete
inputs and outputs. To both the motion controller and the PLC, discrete
transfer I/O looks like physical discrete I/O and is programmed or
accessed in the same manner.