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Simplified logic rung to send the Unscheduled Write message from the controller to the 1407-CGCM-DLR after the Configuration write has
been accepted. Enable_UW is a user-defined permissive interlock. CGCM:I.ConfigRcvd asserted indicates that the CGCM has
accepted the scheduled Configuration write. After a configuration write, the CGCM-DLR turns off CGCM:I.UnscheduledWriteRcvd,
completing the rung input logic. The one-shot fires the message instruction only once.
CGCM:I.ConfigRcvd CGCM:I.UnschdWriteRcvd
Enable_UW
Configuration Messaging
The CGCM-DLR unit is not configured when power is applied. Before the
CGCM-DLR unit can operate, the ControlLogix controller must perform the
configuration. There are two parts to the module configuration and a two-step
process that transfers the configuration into the CGCM-DLR unit. The
following are the two parts of the configuration data:
• Configuration data table: The configuration parameters for the
CGCM-DLR unit are stored in the controller in the Configuration data
table, see
page
157.
• Unscheduled Write data table: Voltage regulator gain and voltage
compensation parameters are stored in the Unscheduled Write data table,
see
page
157.
The controller automatically writes the Configuration data table to the
CGCM-DLR unit. The user program controls the write of the Unscheduled
Write data. The two-step configuration process is described in the
Behavior During Configuration
Unscheduled Write Message Logic
This sample ladder diagram rung provides an example of message control for
writing the Unscheduled Write data table to the CGCM-DLR unit.
shot1
ONS
Rockwell Automation Publication 1407-UM002B-EN-P - February 2019
CGCM-DLR Unit Software Interface
section on
page
142.
MSG
Type - CIP Generic
Message Control
msgWriteUW
Chapter 6
Connection
EN
DN
ER
141
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