1 Publication 1769-UM009B-EN-P - May 2002
Chapter
7
Using the 1769-SDN Scanner Module with
MicroLogix Controllers
This chapter contains an example where the 1769-SDN scanner
module is used with a MicroLogix 1500 controller. The following table
describes what this chapter contains and where to find specific
information.
MicroLogix 1500
Controllers
The MicroLogix 1500 programmable controller has two different
processors that are compatible with the 1769-SDN scanner module.
The 1764-LSP and 1764-LRP processors can use the scanner as a
DeviceNet master and own DeviceNet slave devices. This allows
either processor to communicate with intelligent devices like drives,
scales, starters and many others, or use DeviceNet to expand the
processors I/O capabilities/capacity.
The 1764-LRP processor allows messaging functionality over
DeviceNet, so non-I/O data may be exchanged. Multiple 1769-SDN
scanner modules may be used in a 1764-LRP system, however only
the first two scanners can be used for messaging. This is discussed in
greater detail in Configuring a Local DeviceNet Message on page 7-11.
The amount of power that modules draw from the processor or
expansion power supply, and the amount of data that the processor
can support will determine how many can be used. To determine if an
application can be supported, configuration tools are available from
www.ab.com/micrologix
. In addition to electrical limitations, data
space limitations also exist. The maximum size of the input and
output images for each module in the system is 250 input and 250
output words of data.
For information about See page
MicroLogix 1500 Controllers 7-1
RSLogix 500 I/O Configuration 7-2
Backplane Messaging 7-8
Program Upload/Download 7-9
Configuring a Local DeviceNet Message 7-11
Allen-Bradley Drives
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