Walchem WDP420 Instruction Manual

Walchem WDP420 Instruction Manual Manual pdf 43 page image

405.10 Datalog MenuThis menu is available if the data logging option has been purchased. This is indicated in the modelcode by the letter U at the end of the model code. This menu allows you to save data from the controllerto a USB flash drive.The controller has four logs, the Current Datalog, the Backup Datalog, the Event Log, and the ResetLog. All files are in a CSV format that may be opened in a spreadsheet such as Microsoft Excel.Current Datalog Contains the following data taken at 10 minute intervals:pH or ORPTemperature (only for pH sensor types)When the current datalog is downloaded to a USB stick, it is erased and a newlog file is started.If the current datalog is not downloaded before it reaches its maximum size (atleast 60 days of data) the oldest data is overwritten by the newest data.Backup Datalog Contains the same data as the current log but it is never erased. When the backuplog reaches its maximum size (at least 60 days of data), the oldest data isoverwritten by the newest data.Event Log Contains columns for each relay and flow switch input, as well as the date andtime. Each time any of these change state, the date and time is updated and it willshow a 1 if the relay is on and 0 if it is off, and a 1 if the flow switch indicates noflow, 0 if there is flow. Tens of thousands of events will be recorded before theoldest data is overwritten by the newest, the number varying with the controller’sconfiguration.Reset Log Consists of time stamps of when power was lost, when it was returned, and thecause of the reset.Current or BackupDatalogPlace a USB flash drive with at least 10 MB capacity into the USB port on the front panelof the controller. Press the Enter key to download the file from the controller to the disk.The file name for the Current Datalog will be Datalog.csvusing the date and time it was downloaded. The file name for the Backup Datalog will beDatalog .csv using the date and time it was created.The controller will display the progress of the file download process. If the file wassuccessfully copied to the USB disk the controller will display Transfer Success.Place a USB flash drive with at least 10 MB capacity into the USB port on the front panelof the controller. Press the Enter key to download the file from the controller to the stick.The file name will be Eventlog.csv.The controller will display the progress of the file download process. If the file wassuccessfully copied to the USB disk the controller will display Transfer Success, otherwiseTransfer Fail 1.Copy Event LogTransfer Success Transfer Fail 1Place a USB flash drive with at least 10 MB capacity into the USB port on the front panelof the controller. Press the Enter key to download the file from the controller to the stick.The file name will be Resetlog.csv.The controller will display the progress of the file download process. If the file wassuccessfully copied to the USB disk the controller will display Transfer Success.Copy Reset LogTransfer Success Transfer Fail 1