A redundant I/O Link is standard for maximum security. Optionally, High Level Analog Input, Smart Transmitter Interface, Analog Output, Digital Input and Digital Output processors can be redundant. I/O processing is performed separately from control processing functions so that I/O scan rates are completely independent of I/O quantity, controller loading, processing, and alarming. This partitioning of functions allows more efficient use of advanced Control Processor capability and provides for future I/O expansion.
A variety of I/O processors are available for the PM controllers:
• Analog Input–High Level (16 points)
• Analog Input–Low Level (8 points)
• Analog Input–Low Level Multiplexer (32 points)
• Smart Transmitter Multivariable Interface (16 points)
• Analog Output (8 points)
• Analog Output (16 points)
• Serial Device Interface (16 points—2 ports)
• Serial Interface (32 arrays, 2 ports)*
• Pulse Input (8 points)
• Digital Input (32 points)
• Digital Input 24 Vdc (32 points)
• Digital Input Sequence of Events (DISOE) (32 points)*
• Digital Output (16 points)
• Digital Output (32 points)
* APM and HPM only