Rockwell Automation 1769-SM2 Compact I/O DSI/Modbus Communication Module - Manual (Page 75)

Understanding Explicit Messaging 5-11
Figure 5.8 RSLogix 5000 Modbus RTU Master Message Setup Screen
Table 5.E RSLogix 5000 Modbus RTU Master Message Configuration Data
Configuration Tab Description
Message Type Always use “CIP Generic.”
Service Type Type of Service to execute.
Service Code Code of the respective Service Type.
Class Class ID for the DSI Parameter Object.
Instance Instance number in the Class.
Attribute Attribute number of the Instance.
Source Element Source of the request service data.
Source Length Length of the request service data.
Destination Location where the response service data is stored.
Communication Tab Description
Path Format is ,2,n — where “n” equals the
channel number (1…3) on the 1769-SM2.
Tag Tab Description
Name The name for the message instruction.