Rockwell Automation 20-COMM-D DeviceNet Adapter Series B FRN 2.xxx - Manual (Page 158)

6-30 Using Explicit Messaging
20-COMM-D DeviceNet Adapter User Manual
Publication 20COMM-UM002G-EN-P
SLC 500 Controller – Formatting a Message to Write a Single Parameter Using
Read/Write Parameter Service
Figure 6.33 Write Parameter Message Configuration Screen
The following table identifies the data that is required in each box to
configure a message to write a single parameter.
General Tab Example Value Description
1747-SDN Slot
Size of Send Data (Bytes)
Message Timeout
DeviceNet Addr
Service (1)
Instance
1
2
5
1 (Dec.)
Write Parameter
140 (Dec.)
The chassis slot occupied by the scanner.
Number of bytes to be sent (written). Two bytes equal a 16-bit integer (word).
The time (in seconds) that the message must be completed.
The node address of the adapter connected to the drive.
Code for the requested service.
Instance number is the same as the parameter number.
(1) The default setting for Service is ‘Custom’, enabling entry of a Service Code not available from the Service pull-down menu. When choosing a
Service other than ‘Custom’ from the pull-down menu, an appropriate Hex. value is automatically assigned to the Service Code box which is
dimmed (unavailable).