Tags

tags are the single units of data collection from a device once you connect a device to litmus edge, you add tags to that device tags map to the device's registers from which you want devicehub to collect data every device has memory registers that store sensor and system values these registers can be analog and digital, input and output register information is accessed as tags and these tags are published as topics to the internal message broker raw topics and alias topics when you connect a device docid 3eyafppweuvmblcey17sq , you have the option of generating raw topics or alias topics for litmus edge version 3 5 2 and later, the enable alias topics check box is selected by default alias topics consist of devicename and tagname instead of deviceid and tagid topics can be used for publishing and subscribing with an internal message broker raw or processed data can be analyzed at the edge using analytics docid\ fgjkboqwgvggd2nuqgro5 or flows in flows manager docid\ qcwlxv4bmmr13wwisoi89 you can publish data to litmus edge manager through raw topics you can add tags as follows add a tag adds a single tag for the selected device upload csv uploads a list of tags from a csv file browse tags search for pre defined device tags and select the ones to add see search for pre defined device tags docid\ w1est a3midouizrksgvi to learn more see default topics and descriptions docid 8u4c20 xgyzkjrp24gevm for information about topic formats important if you select enable alias topics while adding or modifying a device the topic id is replaced with a name (for example, devicehub alias plc1 floattag ) devicehub stops publishing to raw topics and publishes only to alias topics litmus edge substitutes all special characters in aliases with " " (underscore) message broker allows subscribe and publish of raw/alias topics when alias topics are enabled for a device, you can't use batch write topics to use batch write topics, you must not select the enable alias topics check box in the device configuration see default topics and descriptions docid 8u4c20 xgyzkjrp24gevm for more information access tags ui you can access tags from the devicehub to access tags log in to litmus edge from the navigation panel, navigate to devicehub > tags the tags pane appears next steps add tags docid 8se7z3pmrfwl1nmzcwalx browse tags docid\ ojjp6qm8xngduigg8xzdd manage tags docid\ g9roompc3xz4zq6cbnonc tag formula variables docid\ ifbwcou90qtfodk hrysr default topics and descriptions docid 8u4c20 xgyzkjrp24gevm devicehub guides docid\ n1phfmqvs8ll8dangvs3w devicehub troubleshooting docid\ m8jyfraxmkktijxpc8otk