Ransburg DynaFlow Programmers Manual - Manual (Page 11)

ALLEN-BRADLEY
REMOTE I/O (RIO)
RIO Operation
The RIO interface contains a proprietary Al-
len-Bradley application specific IC (ASIC) that
is licensed to Ransburg. This ASIC formats the
information to and from the RIO link.
RIO PROTOCOL
The DynaFlow Interface Module communicates
with Allen-Bradley PLC's using remote I/O protocol.
Two types of data are supported:
1. Discrete I/O
2. Block Transfers
RIO DISCRETE I/O
There are five (5) words of discrete inputs and five
(5) words of discrete outputs possible for each
DynaFlow Interface Module. Each DynaFlow
Interface Module supports up to four (4) Channel
Cards and each Channel Card has two (2) Chan-
nels for a total of eight (8) Channels. The PLC
discrete I/O RIO output bits are logical OR'd with
the discrete I/O hard-wired signals so that either
hard-wired signals or PLC control signals
may control the system. Likewise, the DynaFlow
hard-wired outputs are sent to the PLC via the
discrete I/O RIO inputs.
The DynaFlow System uses two-slot addressing
and appears to a PLC as a collection of 8-bit
modules of I/O. In other words, each module has
8 inputs and 8 outputs. The Interface Module
appears as a single 8-bit I/O module in slot 1,
or the odd slot of a pair of slots. Therefore, the
Interface Module, which reports the System I/O
signals, uses the high byte of word 0.
Each DynaFlow Channel Card appears as two
8-bit I/O modules. The first channel appears in
the low byte and the second channel appears in
the high byte of each successive word in the RIO
discrete I/O space.
The following table describes the RIO signals
with their respective bit locations in the discrete
I/O RIO words.
7
DynaFlow Programer's Manual - Introduction
Ransburg
LN-9406-00.3