Rockwell Automation 1336T PLC Comm. Adapter, Series B, FRN 2.xx-3.xx - Manual (Page 65)

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Publication 1336 FORCE–5.13 –– September, 1998
You can set either channel A, channel B, or both channels for RIO
scanner mode. However, if you set both channels for RIO scanner,
you need to make sure that they are on separate blue hose cables as
shown here.
A
B
RIO
Adapter
1/4 rack
RIO
Adapter
1/2 rack
RIO
Adapter
1/2 rack
RIO
Adapter
1/2 rack
PLC Communications
Adapter Board with
both channels
configured for RIO
scanner.
Important: Block transfer is not supported on channels configured
for RIO scanner.
When you are using a device such as a Bulletin 1201 Graphics
Programming Terminal (GPT), if you look at the data from the PLC
Communications Adapter Board, you should be aware that the
information for each rack within a channel is placed in word 0.
For example, if you have two 1/2 racks being scanned on one
channel, the low 1/2 rack will place data in parameters 351 through
354, and the high 1/2 rack can also place data in parameters 351
through 354. However, from the PLC scanner side, this information
could be viewed in parameters 322 through 329.
PLC Communications
Adapter Board in
Scanner Mode 322
323
324
325
326
327
328
329
351
352
353
354
351
352
353
354
Low 1/2 rack
High 1/2 rack