GO ONE STEP FURTHER:
IS1+ EXTENDED I/O

The IS1+ CPU module with CODESYS runtime is used as a control component for a package unit (PEA = Process Equipment Assembly) with installation in Zone 1. Sensors and actuators are connected using IS1+ I/O modules with intrinsically safe field circuits. MTP provides the interface with the monitoring and control system (POL = Process Orchestration Layer). The PA toolkit library for CODESYS from Festo helps IS1+ to create the MTP. This automatically generates the MTP description file from the development environment. This includes MTP-compliant functionalities and visualisation elements which can be used in every MTP-compatible control system and the POL.

The UAO shared runtime execution engine based on IEC 61499 runs on the IS1+ CPU module. This standard isn't a programming language in the traditional sense, but a design environment at system level for distributed information and control systems. It supports event-based function blocks, software/hardware decoupling for complete interoperability and portability, as well as the division of an application and the distribution of it throughout the required hardware, defined by the system model. Initial prototype installations and demo systems have already been created with IS1+ Extended I/O. As a founding member of the UAO, R. STAHL plays an active part in continuously developing and implementing this technology.

ExxonMobil is a founding member of the Open Process Automation Forum, which developed the Open Process Automation Standard (O-PAS). Proof of concept (PoC) was demonstrated in 2017, with heterogeneous components from different suppliers being combined, including the IS1+ Remote I/O system. These tests and findings were incorporated into the field test at ExxonMobil, the details of which are currently being planned. The field test involves around 2500 I/O signals and about 100 loops. As the system integrator, Yokogawa integrates IS1+ Extended I/O via its OPA server as a "DCN (Distributed Control Node) with I/O". Compliance with O-PAS makes it possible to ensure plug-and-play interoperability and remove proprietary barriers as well as to offer products which meet users' specific requirements.

Manufacturers like R. STAHL, system integrators and consultants, as well as system management providers, are represented in the Coalition for Open Process Automation. COPA offers field-tested products with an open architecture based on the OPAF concept and also assists with the requisite system integration. With solutions like IS1+ Extended I/O as a DCN (Distributed Control Node) in accordance with O-PAS, cost savings of 50% can be achieved for purchasing hardware and software according to pre-FEED studies. In terms of TCO (Total Cost of Ownership), end users can look forward to costs that are almost 70% lower than standard control system solutions over 25 years. Visit the COPA website for more information and for help with choosing a system.

In the process industry, NAMUR Open Architecture (NOA) adds a communication structure to the classic layout of the "automation pyramid", enabling data to be exchanged transparently, from the field level to the command level. The IS1+ Remote I/O is used to transmit process data between the field devices and the distributed control system via a compatible Ethernet real-time protocol, such as PROFINET. At the same time, remote I/O takes on the role of a conventional HART multiplexer and tunnels the HART commands from the connected field devices through the system and into the Ethernet network.
The HART commands are transmitted to HART-IP using the Softing smartLink SW-HT software solution. This software functions as a HART-IP server and communicates with HART-IP clients like the Emerson AMS Device Manager.

CODESYS is an open software tool designed for developing applications in accordance with IEC 61131, which can run on intelligent systems like IS1+ Extended I/O. CODESYS provides the ideal basis for MTP applications and is fully interoperable. The CODESYS Development System supports all five languages specified in IEC 61131-3 – instruction list (IL), structured text, ladder diagram, function block diagram and sequential function chart. This means that any PLC programmer is able to use the application development tool with IS1+ Extended I/O right away, without the need for any training.