Advanced Micro Controls Inc. SMD23E2 User Manual page 115

SMD23E2 and SMD24E2 User's Manual
5.3 Add the Message Instructions to your Ladder Logic (continued)
8) Double click in the Service field and select "Read Assembly" for a Message Instruction that is being
used to read data from the SMD23E2 or SMD24E2, or "Write Assemble" for a Message Instruction
that is being used to send data to the SMD23E2 or SMD24E2, and press Enter.
9) For Read operations, the Service Code field will change to "E" (hex). For Write operations, the Ser-
vice Code field will change to "10" (hex). For both read and write operations, the Class field will
change to "4" (hex), and the Attribute field will change to "3" (hex).
10) For Read operations, enter a value of 100 decimal (64 hex) in the Instance field. 
For Write operations, enter a value of 150 decimal (96 hex) in the Instance field.
The figure below show a typical configuration for Message Instructions being used to read data from the
SMD23E2 or SMD24E2. Please note that the Data Table Address (Receive) field may be different in your
application.
20 Gear Drive, Plymouth Ind. Park, Terryville, CT 06786
Tel: (860) 585-1254 Fax: (860) 584-1973 http://www.amci.com
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Figure T5.3 Read Message Instruction Setup Screen
N /IP E
THER ET XPLICIT
M
ESSAGING
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