Specifications

Allen-Bradley ControlLogix Ethernet Driver Help
Its value differ from the _CIPConnectionSizeRequested tag if the value requested is not supported by the device.
For more information on the connection size, refer to Logix Communications Parameters.
Note: The tags described in the table below are only valid for the ControlLogix 5500 and CompactLogix 5300
device models.
Type Tag Name Support Access
System
Tag
_CIPConnectionSizeRequested Logix models, with the exception of Serial
Gateway models.
Read/Write*
Status
Tag
_CIPConnectionSizeActual Logix models, with the exception of Serial
Gateway models.
Read Only
*This tag is read only for ENI Logix models.
Changing the CIP connection size
The _CIPConnectionSizeRequested tag allows users to change the CIPconnection size parameter in real time.
Both the connection size parameter (located in the Logix Comm. Parameters tab in Device Properties) and
the System tag are configurable while clients are connected. Changes are applied before the next read/Write
request is performed.
Predefined Term Tags
The tags displayed in the table below can be used to obtain general processor information from a PLC.
Tag Name Description
#MODE A description of the PLC's current key switch mode. Possible string values include
Program, Run, Remote Program, Remote Run, and Remote Debug. Supported data
types include string.
#PLCTYPE An integer value that corresponds to the "ProdType" attribute specified in the PLC's
EDS file. Supported data types include all but string.
#REVISION Firmware revision displayed as "<major>.<minor>". Supported data types include
string.
#PROCESSORNAME The processor name that corresponds to the "ProdName" attribute specified in the
PLC's EDS file. Supported data types include string.
#STATUS Indicates the PLC's status. Possible values include OK (1) and Faulted (0). Supported
data types include all but date.
#PRODUCTCODE An integer value that corresponds to the "ProdCode" attribute specified in the PLC's
EDS file. Supported data types include all but string.
#VENDORID An integer value that corresponds to the "VendCode" attribute specified in the PLC's
EDS file. Supported data types include all but string.
Addressing Atomic Data Types
Below are suggested usages and addressing possibilities for a Logix data type given the address formats
available. Examples are also given for reinforcement. Click on Advanced for advanced addressing possibilities
for the given atomic data type.
Note: Empty cells do not necessarily indicate a lack of support.
Atomic
Data Type
Standard Array Element Array with or
without Offset
Bit String
BOOL
Client/Server
Data Type
Advanced
Boolean Boolean
(BOOL 1
dimensional
array)
Boolean Array
(BOOL 1 dimensional array)
Client/Server
Tag Example
BOOLTAG BOOLARR[0] BOOLARR[0]{32}
SINT
Client/Server
Data Type
Advanced
Byte, Char Byte, Char Byte Array, Char Array
(SINT 1/2/3 dimensional
array)
Boolean
(Bit w/i
SINT)
String
(SINT 1/2/3
dimensional
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