Overview of Rockwell protocol

The following image shows the data source input window for the Rockwell protocol:

131703234187.png

Rockwell data source parameter

In order to connect a Rockwell device, you need to select the Rockwell protocol and enter the following data source parameters:

Parameter

Description

CPU type

Shows available CPU types:

  • COMPACT_LOGIX

  • OTHER_CPU

Currently not available:

  • CONTROL_LOGIX

  • FLEX_LOGIX

  • MICRO_LOGIX

  • SOFT_LOGIX

  • PLC5

  • SLC500

IP address

IP address of the Rockwell controller.

Route parameters

Comma separated list with rack, port, and slot numbers that are necessary to connect to the PLC (default: 1,0)

Rockwell data point parameter

In order to collect the data of your Rockwell device, you must add new data points.

131704831627.png

The following table shows the data point parameter:

Parameter

Description

Data Type

Data type supported by backend (e.g. INT).

STRING data type is currently not supported.

Tag

Name of the tag that has to be recorded.

For Rockwell controller types tag name will be validated according to the Rockwell tag name rules.2) 

2) Rockwell tag name rules can be found in Logix 5000 Controllers I/O and Tag Data Programming Manual

The following table shows the recommended data type selection:

Rockwell data type

Length

Data range1)

MindSphere data type

BOOL

1 bit

0 or 1

BOOLEAN

SINT

1 byte

-128…+127

INT

INT

2 bytes

-32,768…+32,767

INT

DINT

4 bytes

-2,147,483,648…+2,147,483,647

INT

REAL

4 bytes

  • -3.40282347E38…-1.17549435E-38 (negative values)

  • 0

  • -1.17549435E-38-…3.40282347E38 (positive values)

DOUBLE

1)Values have been taken from Logix 5000 Controllers I/O and Tag Data Programming Manual