Data Address Format

Introduction

Fernhill SCADA interfaces to many different data sources. A data source often contains multiple data items, where each data item has an "Address". The format of the "Address" depends on type of the data source.

In Fernhill SCADA the Data Address Format is a text string that defines the "Address" of a data item.

Where Used

The Data Address Format is used in these locations:

In the IOItemName property of I/O Data Point Tags:
In the DATAADDRESS parameter of these Tag Command Function Blocks:
In the DataAddress parameter of these Tag Command Functions:
In the DataAddress parameter of these Tag Commands:

Format

Use this table to choose the correct Data Address Format for the type of data source:

Data Source Type	Data Address Format
Allen Bradley PLC	Depends on the Allen Bradley PLC Family: For MicroLogix, SLC and PLC-5, this is an Allen Bradley PLC File Data Address. For ControlLogix, CompactLogix, Micro820, Micro830 and Micro850, this is an Allen Bradley Logix PLC Data Address.
Allen Bradley Register Block	An Allen Bradley PLC File Data Address.
BACnet Device Tag	A BACnet Data Address.
DNP3 Outstation Tag	A DNP3 Point Address.
File Scanner or URL Scanner	For CSV files, the location of the variable in the file using spreadsheet notation, for example B5 represents row 5 and column 2. For JSON files, the result of the JSONata expression.
GE Fanuc PLC	A GE Fanuc PLC Data Address.
Idec Micro PLC	An Idec Micro PLC Data Address.
Idec Micro Register Block	An Idec Micro PLC Data Address.
IEC 61131-3 Program	A reference to a global variable.
Mitsubishi Melsec PLC	A Mitsubishi Melsec PLC Data Address.
Mitsubishi Melsec Register Block	A Mitsubishi Melsec PLC Data Address.
Modbus Device	Depends on the DataAddressFormat property of the Modbus Device Tag: Standard Modbus Data Address Enron Modbus Data Address DirectLogic Data Address
Modbus Register Block	Depends on the DataAddressFormat property of the associated Modbus Device Tag: Standard Modbus Data Address Enron Modbus Data Address DirectLogic Data Address
MQTT Connection	A string formatted with the MQTT IOItemName Format.
ODBC Query	The location of the result in the result set using spreadsheet notation, for example B5 represents row 5 and column 2.
Omron PLC using FINS	An Omron PLC Data Address.
Omron PLC using Host Link	An Omron PLC Data Address.
Omron Register Block	An Omron PLC Data Address.
OPC Classic Connection	The OPC item name.
OPC UA Connection	An OPC UA Node Identifier.
Random Generator	A property name of the random generator.
Siemens S7 Ethernet PLC	A Siemens S7 PLC Data Address.
Siemens S7 Serial PLC	A Siemens S7 PLC Data Address.
Siemens S7 Memory Block	A Siemens S7 PLC Data Address.
SNMP Agent	The OID of the variable in the SNMP Agent.

Further Information

Drivers

For information about all drivers in Fernhill SCADA.

Configuration Tool

For more information about the Fernhill SCADA configuration tool.

Glossary

For the meaning of terms used in Fernhill SCADA.