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Schneider Electric
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For applications that require large I/O drops remotely mounted, highest I/O
performance, and/or connectivity to existing Modicon remote I/O installations, the
Quantum Automation Series provides a remote I/O (RIO) architecture solution.
Based on the S908 remote I/O network technology, this network is compatible with
existing installations of Modicon I/O products, including the 800 and 200 Series I/O
modules and Sy/Max I/O. New installations can incorporate an installed base of
these devices for reduced installation costs.
RIO is based on a coaxial cabling scheme that provides long-distance capability, up
to 5 km (16 400 ft) with CATV cable or longer with optional fiber optic cable. It is a
high-performance network operating at 1.544 Mbits/s for high I/O data throughput.
The RIO cable system consists of a linear trunk line, with line taps and drop cables
running to each remote drop. Up to 31 remote drops are configurable. Each drop can
support up to 128 I/O words (64 words in/64 words out).
The Modicon segment scheduler complements the high performance of the RIO
network by interleaving I/O servicing and logic solving to create the fastest system
throughput available.
The segment scheduler breaks application programs into logical segments, then
schedules I/O servicing to occur in conjunction with the segment's associated logic
solving. Inputs are read prior to logic being solved and outputs are written after logic
is solved. This eliminates the need to wait for an entire scan before outputs are set,
giving a faster system response than comparable control systems. As a result, there
is no performance penalty for using RIO–it is as fast as local I/O.
For most systems, throughput of local or remote I/O can be estimated at no less than
two times scan (assumes measurement of input and output times through 24 V d.c.
modules). In addition, all analog and register values are updated automatically, as
fast as discrete I/O, without user programming.
For forward integration from existing Modicon systems, the Quantum Automation
Series is compatible with the 800 and 200 Series I/O products. Using the same RIO
head end interface, it connects to 800 Series I/O via the P890300 RIO adapter, and
to 200 Series I/O via the P453/J290 and P451/J291 RIO adapters.
Other standard Modicon components are also compatible with this system, including
network taps (MA-0185-100) and splitters (MA-0186-100). Quantum remote I/O also
supports drops of Sy/Max I/O.
To ensure a valid configuration, add up the required backplane current (in mA) for all
modules at each I/O remote location, and ensure the total is less than the available
power in the selected power supply.
Presentation
Quantum RIO drop with
140 CRA 931 adapter
800 series RIO drop with
AS-J890-101 adapter
200 series RIO drop with
AS-P453 adapter
Sy/Max I/O
Quantum head-end with
CPU and 140 CRP 931
adapter
Modicon segment scheduler
Compatibility with the 800 and 200 Series I/O products
Rules of configuration
Quantum automation platform 4
I/O architectures
Remote I/O
Presentation
0
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