OMWT-SOFT-OPC Server Data Logging

Features

OMWT-SOFT-OPC Server can log data to an ASCII file at a programmable interval. The default name of the file is OMWT-SOFT-OPC.LOG. The name can be changed by changing the INI file. The log rate (programmable interval) can be changed in the INI file ([Logging] LogRate=) or by a client application through OPC (SERVER!LogRate). By default, all devices listed in the INI file are logged. You can disable logging for each device ([Devicen] Log=). The number of decimal places logged for each device can be changed as well ([Devicen] LogDecimalPlaces=). When a device is offline, OMWT-SOFT-OPC uses the last value gathered when online for logging. If the device has never been online, then - 999999.0 is logged. You can have OMWT-SOFT-OPC place a character such as '*' or a string such as 'offline' in the logging string instead of the last value([Logging] OfflineIndicator=). All these parameters can be changed in the INI file.

A client application can control logging through OPC variables. The client can start/stop logging or just log a single record. You can have your client application synchronize logging by keying off of one of the device's OPC variable changing values and then have OMWT-SOFT-OPC log one record. The client can also control the log rate. The full path name of the log file is also available to a client application through OPC. See the section "OPC Server Items" for more information.

For diagnostic purposes, OMWT-SOFT-OPC can log errors that have occurred while waiting and processing data from the sensors. This feature is enabled in the INI file ([Logging] LogErrors=). OMWT-SOFT-OPC places the errors in a file called OMWT-SOFT-OPC.ERR. See the section "OMWT-SOFT-OPC.INI: Logging” for more information.

OMWT-SOFT-OPC Server

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Omega Engineering M-4066 manual OMWT-SOFT-OPC Server Data Logging, Features

M-4066 specifications

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