Integration of AC500 PLC into System 800xA
The AC500 PLC hardware can be used for certain
process control functions while the operator
benefits from user experience in System 800xA.
Proven libraries are provided for System 800xA
and AC500. This allows programming control
tasks in the AC500 PLC while System 800xA is the
operator interface. For large distributed projects,
many AC500 PLCs can be connected to a System
800xA node.
Process Control objects
Twelve objects are available which cover the
following functionalities:
• Digital and analog setpoints
• Analog measurement with threshold alarm
functions
• Valve control
• Motor control with or without variable speed
drives
• Proportional integral controller
Communication between System 800xA and AC500 PLC
Communication between the AC500 function
blocks and the objects in System 800xA uses the
PLC Connect option of System 800xA and the
AC500 OPC Server.
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