Campbell Scientific CR10X TD Operating System Addendum for CR510, CR10X, and C - Page 46

Section 12. Program Control Instructions TABLE 12-1. CR205/CR210/CR215 in PakBus Network General Description PRO CON/limitations PakBus Instructions used in Datalogger Programming Stand Alone Datalogger CR205 is programmed as a stand alone datalogger. Data are stored in datalogger and retrieved by computer running Loggernet • Data are stored in Datalogger, loggernet will automatically retry if communication fails. • No special datalogger programming required for data transfer • Separate data files for each logger. Normal programming to measure sensors, process, and store data. SendGetData P190 May be used as either a wireless sensor interface (data stored in "Master" Logger) or to transfer data to another logger while still independently storing data. • Most flexible datalogger to datalogger data transfer. • Can be set to automatically retry sending data. • Both the "Remote Sensor" CR205 and the Master Datalogger need to be programmed to handle the data. • Data collection should be scheduled to avoid conflicts with datalogger to datalogger communication. SetValue, GetValue, or P190 in datalogger initiating communication. Programming to deal with any sent data or codes in the other datalogger. Wireless Sensor P193 "Master" datalogger stores all data and sets transmission schedule for remote CR205 w/ sensors. • Potential for lowest power consumption by remote CR205. • Data are collected only from "Master" datalogger. • Automatic retries if adequate time is allocated • Both the "Remote Sensor" CR205 and the Master Datalogger need to be programmed to handle the data. • Without storing data in the sensor, data are lost if transmission fails. • Master radio must be on continuously. • For simplicity, all wireless sensor CR205s should have the same sensors. (or at least no more than 4 different sensor configurations) • Data collection should be scheduled to avoid conflicts with Sensor to Master communication. Wireless Network Master (P193) in master datalogger. TimeUntilTransmit (or P194) and SendGetData (or P196) in remote. 12-2