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.
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.
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.
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