Using Explicit Messaging 6-35
PowerFlex® 755 Drive Embedded EtherNet/IP Adapter User Manual
Publication 750COM-UM001A-EN-P
MicroLogix 1100 – Formatting a Message to Write Single Parameter
Figure 6.41 Generic Set Attribute Single Message Configuration Screens
The following table identifies the data that is required in each box to
format a single write message.
General Tab Example Value Description
Channel
Comm… Command
Data Table Address
Size in Bytes
Extended Routing…
Service
(1)
Class
Instance
Attribute
(2)
1
CIP Generic
F50:0
(3)
4
(4)
RIX16:0
Generic Set Attribute Single
93 (Hex.)
535 (Dec.)
9 or 10 (Dec.)
Controller port to which the EtherNet/IP network is connected.
Used to access the Parameter Object in the adapter.
An unused controller data table address containing the message
instruction. This address is the starting word of the request file.
Number of bytes to be transferred. Each byte size is an 8-bit integer.
An unused routing information file for the controller.
Code for the requested service.
Class ID for the DPI Parameter Object.
Instance number is the same as the parameter number.
Attribute number for the Parameter Value attribute.
MultiHop Tab Example Value Description
To Address 10.91.100.79 IP address of the adapter connected to the drive.
(1)
The default setting for Service is “Custom,” enabling entry of a Service Code not available from the Service pull-down menu. When
selecting a Service other than “Custom” from the pull-down menu, an appropriate Hex. value is automatically assigned to the Service
Code box which grays out (unavailable).
(2)
Setting the Attribute value to “9” will write the parameter value to the drive’s Non-Volatile Storage (EEPROM) memory, so the parameter value
will remain even after the drive is power cycled. Important: When set to “9,” be very cautious as the EEPROM may quickly exceed its life
cycle and cause the drive to malfunction. Setting the Attribute value to “10” will write the parameter value to temporary memory, so the
parameter value will be lost after the drive is power cycled. It is recommended to use the “10” setting when frequent write messages are
required.
(3)
In this example, Accel Time 1 is a 32-bit REAL (floating point) parameter. Therefore, set the Data Table Address to “F” type (floating point).
If the parameter being written to is a 32-bit integer, the Data Table Address type would be set to “L” (long word).
(4)
In this example, Accel Time 1 is a 32-bit REAL (floating point) parameter. If the parameter being written to is a 16-bit parameter, the Size
in Bytes would be set to 2.
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