Allen-Bradley PLC-5 User Manual page 106

7-8 Communicating with a PLC-5 Adapter Channel
Publication 1785-UM012D-EN-P - July 2005
If data from the supervisory controller is intended to control outputs of the
adapter-mode controller channel, write ladder logic in the adapter-mode
controller to move the data from its input destination file to its output image.
Use XIC and OTE instructions for bit data; use move and copy instructions
for word data.
If you want the supervisory controller to read data from a data file in the
adapter-mode controller, write ladder logic in the adapter-mode controller to
move that data to its output source file for transfer to the supervisory
controller's input image table.