The diagram below describes the timestamp inserter mechanism.ġ- The Store Module ( Tstamp VLL max) will store the current value whenever it’s triggered by Vll the maximum module. This example can be replicated for any other Modbus parameters such as peak demand, maximum values etc. The time stamp output will be in a UNIX format (defined as the number of seconds since January 1st, 1970, 0:00:00). The example below shows how to include a timestamp for recorded the VLL average maximum value (Register 40187). Power Monitoring expert, 3rd party OPC servers or 3 rd party modbus servers will assign a timestamp based on the local system time when modbus communication occurs. The user would like to see timestamps for specific modbus registers directly from the device rather than the server. Device Definition File Import/Export: Define Tags and Tag Groups for configured devices via text files in Comma Separated Variable (CSV) format.Timestamps are not included in the Modbus protocol.Server error/status announcing via Device Tags.Standard/Non Standard Data Addressing Supported.Selectable Mask Write Support: YES (support function code 22), NO (do not support function code 22).Selectable Write HREG Function Codes: SINGLE (function code 6), MULTI (function code 16), or BOTH.Adjustable Max Write Holding Register Size: 1 - 125 registers (function code 16).Adjustable Max Read Holding Register Size: 1 - 100 registers (function code 3).Adjustable Max Read Input Register Size: 1 - 125 registers (function code 4).Adjustable Max Read Discrete Input Size: 1 - 2000 coils (function code 2).Selectable Write Coil Function Codes: SINGLE (function code 5), MULTI (function code 15), or BOTH.Adjustable Max Write Coil Size: 1 - 800 coils (function code 15).Adjustable Max Read Coil Size: 1 - 2000 coils (function code 1).Data Scaling and Formats Supported: INT, UINT, LONG, ULONG, FLOAT, MODFLT (Modbus Float), DOUBLE, STRING, RSTRING (reverse string), PowerLogic 3 register DATETIME, PowerLogic PF (power factor), PowerLogic Scale Factors A-F and fixed decimal position scaling.Data Types Supported: COIL, DINP, HREG, IREG, LREG, FREG, DREG, XREG, EXSTAT and FIFO.These include Modicon PLCs, Square D Ethernet Communication Modules (ECM) and Square D Ethernet Communication Cards (ECC). Device Supported: Any controller or device supporting the above protocol and one or more of the listed function codes can be used with the Server.Mask Write Register (HREG) (function code 22).Write General Reference (XREGs) (function code 21).Read General Reference (XREGs) (function code 20).Force Multiple Coils (function code 15).Read Exception Status (EXSTAT) (function code 7).Write Single Register (HREG) (function code 6).Read Input Registers (IREGs) (function code 4).Read Input Discretes (DINP) (function code 2).Write Multiple Registers (HREGs) (function code 16).Read Multiple Registers (HREGs) (function code 3).Protocol Supported: MODBUS/TCP protocol over TCP/IP Ethernet.Operating System Supported: Windows 95/98/NT/2000 and newer.The Server was developed by DASTEC Corporation using the OPC Server Toolkit from FactorySoft, Inc. Clients and the Server then reference the data via the tag names. These locations are defined as part of the configuration process generating Tags in the Server database. Data exchanged occurs between the Server and the defined device data locations. Once data points have been configured, the Server can communicate with these devices on behalf of the Clients. The configuration environment allows the Server to be configured with information such as which device to interface with and which data in those configured devices should be accessed. The Server has a graphical user interface (GUI) configuration environment with an "Explorer" look and feel. This Server meets the OPC Data Server Specification Version 2.0. The Modbus-Square D PowerLogic Ethernet OPC Server supports data exchange with Clients via Microsoft's Object Linking and Embedding (OLE) for Process Control (OPC). Device redundancy provides uninterrupted data transfer between the process and the client application(s). It can be configured to provide complete, automatic switch over to backup controllers on failure detection or under application control. The Modbus-Square D PowerLogic Ethernet OPC Server communicates with one or more Modicon TCP/IP Ethernet PLC(s) and/or devices connected to one or more Square D POWERLOGIC Ethernet Communication Modules (ECM) or Ethernet Communication Cards (ECC) using MODBUS/TCP as the application protocol over an Ethernet network.ĭevice redundancy is built into the server. Modbus-Square D PowerLogic Ethernet OPC Server
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