Emerson PMCSPAN26E-002 Primary PMC expansion

PACSystems Control System Overview

The PACSystems controller environment combines performance, productivity, openness and

flexibility. The PACSystems control system integrates advanced technology with existing systems. The

result is seamless migration that protects your investment in IO and application development.

Programming and Configuration

PAC Machine Edition programming software provides a universal engineering development

environment for all programming, configuration and diagnostics of PACSystems. A PACSystems CPU is

programmed and configured using the programming software to perform process and discrete

automation for various applications. The CPU communicates with IO and smart option modules

through a rack-mounted backplane. It communicates with the programmer andor HMI devices via

the Ethernet ports or via the serial ports COM1 and COM2 using Serial IO, or Modbus RTU slave protocols.

The DeltaV system offers redundant H1 interfaces. The two H1

interfaces are connected with a redundant terminal block to

provide back-up link active schedule (LAS) capability that also

maintains communication with the host system. 

Transfer to the standby card is automatic and requires no special configuration.

Ongoing diagnostics ensure the standby H1 card is available on demand. 

This process requires no user interaction.

The FOUNDATION Fieldbus H1 interface is packaged in a small form

factor enclosure and installs on any I/O slot of the S-series horizontal carriers. 

The interface uses a separate terminal block to which the segment wires are connected. 

A single interface is used with the 1 wide terminal block in a simplex installation. 

Two H1 interfaces can be mounted in adjacent slots using the 2-wide redundant terminal block. 

The DeltaV controller recognizes the presence of redundancy and presents both cards as a single pair within the system.