Released on = October 11, 2006, 2:16 am

Press Release Author = Sensorplex

Industry = Industrial

Press Release Summary = Pluto is a new "All-Supervisor" Safety PLC concept that
simplifies the design of safety systems and achieves the highest safety (category 4)
according to EN 954-1. The key difference between Pluto and conventional safety PLCs
is that there is no "supervisor-subordinate" relationship between the control units
connected to the safety bus. All Plutos are "supervisor" units and can see each
others' inputs and outputs. Using this concept, each Pluto can make decisions about
its own immediate safety environment.

Press Release Body = The New Safety PLC concept developed by Jokab Safety simplifies
the design of safety systems
Connect Up to 79 Devices on a single Pluto safety PLC and still a achieve category 4
safety

Pluto is a new "All-Supervisor" Safety PLC concept that simplifies the design of
safety systems and achieves the highest safety (category 4) according to EN 954-1.
The key difference between Pluto and conventional safety PLCs is that there is no
"supervisor-subordinate" relationship between the control units connected to the
safety bus. All Plutos are "supervisor" units and can see each others' inputs and
outputs. Using this concept, each Pluto can make decisions about its own immediate
safety environment.

This concept enables simple communication and easy alterations of the safety system.
With the use of a "gateway" device, information from a Pluto network can be
transferred to other bus systems thereby creating even larger systems. Gateway units
are readily available for a number of different bus-systems - i.e. Profibus,
CanOpen, Device Net.

Pluto offers an economic solution for both single machine and for large integrated
machine systems. Of Pluto's 20 I/O, 8 can be configured as both inputs and outputs
(sometimes even as inputs and outputs at the same time), 4 are failsafe outputs
independent of each other. 32 Plutos can be connected to a twisted pair safe bus
system. This enables the amount of physical I/O connections to be expanded from 20
to 640.

Pluto is a programmable safety system intended for safety applications where it is
not accepted that faults in the control system lead to loss of a safety function. To
achieve this requirement the system is designed with integral redundancy and
monitoring. Unlike ordinary PLC systems, Pluto utilizes two microprocessors, which
both control and monitor each safety function for correct operation. Each input to
the system is separately connected to each processor, each having their own memory
and executing their own program. The processors continuously compare the results
with each other to ensure integrity of data.

Each safety output is connected to both processors and cannot be set without both
checking that the logic conditions in the application program are fulfilled. Each
Pluto unit has connections for CAN-bus and can be interconnected with other Pluto
units. The degree of safety is the same over the bus as it is within each unit.

Web Site = http://www.sensorplex.com

Contact Details = Sensorplex
Unit 2, No.6 Garden Road Clayton Vic 3168
AUSTRALIA
Tel: +61-(03)9561-7099 Fax: +61-(03)9561-7077