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1MRS751852-MUM
MicroSCADA Pro
System Overview
Technical Description
SYS 600 *9.0
COMLOOP
Fig. 4.1.3.-2
A communication loop is a kind of multidrop communication,
where each node has two alternative connections.
4.2.
COM 500 communication server
General
COM 500 is a communication server, which provides gateway services for routing
the data flow between the process and network control systems. The data transfer
usually involves protocol conversion. It also handles system co-ordination tasks,
such as dynamic assignments of the control command authorities. See Figure 4.2.-1.
COM 500 supports a variety of protocols for connecting upper level systems, like
some network control centers. It is typically connected to the network by some
telecontrol protocol, for example RP 570. Different devices such as L
ON
W
ORKS1
devices, SPA devices and RTUs can be connected to it. COM 500 sends information
to one of these devices for supervising and controlling the customer process.
COM 500 is based on MicroSCADA technology, like SYS 500. It can be integrated
to SYS 500 for cost savings in compact system solutions. It also offers an interface
for communication diagnostics of the control system.
1. L
ON
W
ORKS
is a trademark of Echelon Corporation registered in the United States
and other countries.
