Rockwell Automation 1440-SPD02-01RB XM-220 Dual Speed Module - Manual (Page 67)

Publication GMSI10-UM004B-EN-P - May 2010
Configuration Parameters 59
I/O Data Parameters The I/O data parameters are used to configure the content and size of the
DeviceNet I/O Poll response message.
IMPORTANT
The XM-220 must be free of Poll connections when
configuring the Poll Output (Poll Response Assembly)
and Poll Size. Any attempt to download the parameters
while a master has established the Poll connection with the
XM-220 will result in error.
To close an existing Poll connection with an XM-440,
switch the XM-440 from Run mode to Program mode.
Refer to Changing Operation Modes on page 71.
To close an existing Poll connection with other master
devices, remove the XM-220 from the scan list or turn off
the master device.
I/O Data Parameters
Parameter Name Description Values/Comments
COS Size (XM Serial
Configuration Utility only) The size (number of bytes) of the Change of State
(COS) message. The COS Size cannot be changed.
COS Output (XM Serial
Configuration Utility only) The Assembly instance used for the COS message.
The COS message is used to produce the Alarm and
Relay status for the module. The COS Output cannot be changed.
Refer to COS Message Format on
page 77 for more information.
Poll Size Sets the size (number of bytes) of the Poll response
message. Decreasing the maximum size will truncate
data from the end of the Assembly structure.
Important: If you set the Poll Output to "Custom
Assembly," the poll size is automatically set to the
actual size of the customized Poll response.
The minimum size is 4 bytes and the
maximum size is 124 bytes.
Sets the Assembly instance used for the Poll
response message. Each Assembly instance contains
a different arrangement of the Poll data.
The Poll response message is used by the XM
module to produce measured values. It can contain
up to 31 REAL values for a total of 124 bytes of data.
Options: Assembly Instance 101
Assembly Instance 102
Assembly Instance 103
Custom Assembly
Refer to Poll Message Format on
page 75 for more information.
Assembly Instance Table (XM
Serial Configuration Utility only) Displays the format of the currently selected COS or
Poll Assembly instance. The highlighted (yellow) Assembly
structure bytes are included in the I/O
message.
Custom Assembly (XM Serial
Configuration Utility only) Defines a custom data format for the Poll response.
The custom assembly can contain any of the
measurement parameters included in Assembly
instance 101, as well as alarm and relay
configuration parameters. You can select up to 20 parameters.
Refer to Poll Message Format on
page 75 for more information.
XM Configuration
Utility EDS File
Poll Output Poll
Response
Assembly