20 Rockwell Automation Publication 1756-PM020F-EN-P - January 2019
Service Service name in earlier versions of this manual, Service name in Logix Designer
Multiple Service Packet Service Multiple Service Packet Service Multi-Request Service
For further information on services, refer to the services topics in this
chapter.
For examples showing more complex addressing using both types of
addressing, see CIP Addressing Examples.
For further information on the Request Data and Reply Data, refer to the
examples in this chapter.
See also
Multiple Service Packet Service on page 35
CIP Addressing Examples on page 63
Read Tag Service on page 20
Read Tag Fragmented Service on page 22
Write Tag Service on page 27
The Read Tag Service reads the data associated with the tag specified in the
path.
• Any data that fits into the reply packet is returned, even if it does not
all fit.
• If all the data does not fit into the packet, the error 0x06 is returned
along with the data.
• When reading a two or three dimensional array of data, all dimensions
must be specified.
• When reading a BOOL tag, the values returned for 0 and 1 are 0 and
0xFF, respectively.
See also
Services Supported by Logix 5000 Controllers on page 18
Example Using Symbolic Segment Addressing on page 20
Example Using Symbol Instance Addressing on page 21
Read a single tag named rate using Symbolic Segment Addressing. The tag
has a data type of DINT and a value of 534. The value used for Instance ID
was determined using methods described in CIP Services and User-created
Tags.
Segment Addressing
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