Method for operation of a field device in a matched-power mode

摘要

A method for operating a field device of process automation technology, wherein the field device features a fieldbus communication interface, to which a wireless adapter is connected. The field device can be supplied with electrical power by the wireless adapter via the fieldbus communication interface; and an electrical current flowing over the fieldbus communication interface is not limited, so that it can freely adjust corresponding to a respective power requirement.

主权项

1. A method for operating a field device of process automation technology, wherein the field device includes a fieldbus communication interface, to which a wireless adapter is connected, comprising the steps of:
supplying the field device with electrical power by the wireless adapter via the fieldbus communication interface; and implementing a communication between the wireless adapter and the field device according to one of the standards Profibus, Foundation Fieldbus or HART by a superpositioning of digital communication signals on an electrical current signal, wherein: the field device is switched to a power-matched mode in which the electrical current signal, flowing over the fieldbus communication interfacer can be adjusted to be below a minimal electrical current value provided for according to the standard of the respective bus system.