FAQs

Overview

We have prepared a few frequently asked questions and answers concerning use of our T&D WebStorage API. We are continually trying to improve this section by making changes and additions upon the receipt of user questions and comments.

FAQs

Q. What are “Current Readings”?

A. Current readings refer to the most recent recorded data readings sent from the device to T&D WebStorage Service.
Because data may have not been sent for some time, the “most recent" data will be the most recently sent data and therefore may not be “current" in the sense of “now".
These readings may be but are not always real time current values.

Q. What is meant by “Current Readings Graph”?

A. Current Readings Graph refers to the archive of data that has been sent by the device to the T&D WebStorage Service. Depending upon the model type there are difference in the stored data. See below for details.
Note that T&D WebStorage Service receives recorded data in TRZ format files. This data is referred to as “Recorded Data (TRZ format)" and is not the same data as in Current Readings Graphs.

Model Upper Limit for Number of Stored Readings
in Current Readings Graph
Current Readings Graph Display
TR-7wb/nw/wf Series 80,000 readings The sent data is recorded data as is.
The recorded data at the set recording interval is stored as a Current Readings Graph.
TR4 Series 160,000 readings As with the TR-7wb/nw/wf Series, the recorded data at the set recording interval is stored as a Current Readings Graph.
In addition, if ThemoREC monitoring data is set to be stored at T&D WebStorage, then the monitoring data will also be stored in the data of the Current Readings Graph.
RTR-500 Series 1,500 readings Base Units in the RTR-500 Series send current readings as an XML file with all readings for that time of transmission stored as one set.
Therefore the recording interval settings in the Remote Units becomes unrelated and the archived data is that of the set of current readings at the time of transmission from the Base Unit.

The recorded data at the set recording interval in each of the Remote Units is handled as TRZ format file data and is not compatible with Current Readings Graph.
TR-700W Series 1,500 readings As in the RTR-500 Series, the archive is of current readings XML file data that was stored at the time of auto-upload to T&D WebStorage.

The recorded data at the set recording interval in each of the Remote Units is handled as TRZ format file data and is not compatible with Current Readings Graph.

Q: Can I display the T&D WebStorage data in my own HTML content?

A. In order to reduce security risks, the open API does not support responses in JSONP format. Therefore, it is not possible to send a direct request from JavaScript in your HTML content to our open API and receive a response.

If you wish to use data retrieved from our open API in JavaScript on your own user HTML content (hereafter referred to as “User JS"), please refer to the following method.
1) Create an server-side application that can be sued with our open API. (Refer the provided Sample Program below)
2) Access the open API, and store the received JSON formatted response contents in a file name such as “response.json" in an environment that can be read by the User JS.
3) Have the User JS read the above “response.json” file and output it after having carried out the necessary formatting.

If you wish to have regular updates to the HTML content, make sure that it is possible to periodically access the open API as in 2 above and make sure it is also possible for the “response.json" file to be refreshed upon receipt of new data.
*It is necessary to make sure that “response.json” is not cached.

Please note that we have designed our open API in this manner so as to avoid the risk of handling important authentication information in JavaScript and avoid the risk associated with releasing responses in JSONP format.

Q. Why is there a set “Rate Limit”?

A: To ensure that all users have fair access to and use of T&D WebStorage Service, we have made certain settings to distribute load.
We will continually reevaluate and fine tune these settings as deemed necessary according to usage of our open API and our server conditions.

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