The IGUANA Internet/fieldbus gateway is a development of the Institute of Computer Technology, Vienna University of Technology. Its main goal is to provide Internet access for various different fieldbus systems. This task is accomplished by abstracting underlying fieldbus systems and providing fieldbus access through various Internet front-ends.
Apart from fieldbus data access, it implements several services, such as events, logging, asynchronous notifications, scheduled parameter uploads and access to a limited subset of FAN node configuration.
The IGUANA gateway already implements various common Internet protocols, such as the ``Simple Network Management Protocol (SNMP) that can be used to access the underlying fieldbus systems and several gateway services.
SOAP Web Services may be another way to access the IGUANA gateway and its underlying fieldbus systems. However, there are various ways to implement SOAP on the gateway and there may be several difficulties, such as limited processing power of the gateway or suitable addressing and data representation of fieldbus data with SOAP that have to be overcome.