====Modbus/TCP Gateway Live Driver Information====

===Source Properties===

When setting up the Modbus data source, you'll be asked to specify...

^Option^Use^
|IP Address|The IP address (or host name) of your Modbus/TCP device|
|Port|The TCP port to connect to (usually 502)|

===Link Properties===

The following sentence (with options) will appear when you link a property to live Modbus data...

Load data from the //<register style>// at address //<address>// on unit //<unit>//. 

^Option^Use^
|Register Style|See 'Register Styles' below|
|Address|The address. This is a zero-based offset from the //start of the register//. See the examples below|
|Unit|The Modbus unit number|

===Register Styles===

There are a few register styles available...

^Style^Description^
|Coil|An input coil (digital value)|
|Discrete|An output digital value|
|Holding Register (16 Bit Integer)|A value that can be between 0-65,535 and uses one register|
|Holding Register (32 Bit Integer)|A value that can be between 0-4,294,967,295 and uses two registers|
|Holding Register (32 Bit Float)|An IEC floating point number using two registers|
|Holding Register (64 Bit Double)|An IEC double-precision floating point number that uses four registers|

===Examples===

If you wanted to read the first holding register (**40000**) of Modbus unit 5, your settings would look like this...

{{modbusconfig.png}}

===Notes===

Please note that all ARDI Modbus addresses are //zero based// - meaning that the first holding register is **40000**, not **40001**.