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183
Sil ver Se ries In stal la tion & Op er a tion Man ual
The target PLC address is MODBUS RTU 4x100 (40001). The index register selected is INDEX 0 (LW9200,
16-bit). If the index register feature were not used, then the OIT would simply read the contents of PLC register
40001 and display the value.
Since the index register feature is enabled, the OIT will first read the value located in INDEX 0 (LW9200) and then
add this value to the PLC register 40001. For example, if the value read in INDEX 0 is 5, then the OIT will read
PLC register 40006 {40001 [PLC Address] + 5 [INDEX0] = 40006}. You can then create another Numeric Input
object (Set Word, Multi-State Switch, or Option List) that is used to change the value in INDEX0.
1010-1007W, Rev 02
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