Method of reprogramming memories in field devices over a multidrop network
AssigneeHoneywell Inc.
InventorsMatthew R. Schrier, Mark E. Miller
Life of this patent
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Abstract
The method of downloading application information from a host device to a field device over a network providing communication and power to the field device, the method including the steps of stopping the normal data processing of a connected control device, halting operation of device components not critical to the download operation, reducing the operating frequency of a microprocessor included in the field device and transmitting a new device application over the network.
Claims8
A method of downloading application information from a host device to a field device over a network providing communication and power to said field device, the method comprising the steps of:
- a) the host device transmitting a command to the field device via said network that a download is about to begin;
- b) said field device operated to place itself in a state to receive the downloaded information, in response to said command;
- and
- c) preparing an included memory for reprogramming, including the step of:
- halting operation of field device components not critical to the download operation whereby said field device components draw a minimum of power.
Dependencies are inferred from the claim text.