Seneca KEY-C Series User Manual page 5

13. INSTALLING MULTIPLE DEVICES IN A NETWORK USING THE "DHCP FAIL
ADDRESS"........................................................................................................................ 34
14. THE DB9 RS232 CABLE ........................................................................................ 34
15. SUPPORTED MODBUS COMMUNICATION PROTOCOLS .................................. 35
Supported Modbus function codes .....................................................................................................................................35
16. INFORMATION ABOUT MODBUS REGISTERS ................................................... 36
NUMBERING OF "0-BASED" OR "1-BASED" MODBUS ADDRESSES .............................................................................37
NUMBERING OF MODBUS ADDRESSES WITH "0-BASED" CONVENTION ....................................................................37
NUMBERING OF MODBUS ADDRESSES WITH "1 BASED" CONVENTION (STANDARD) .............................................38
BIT CONVENTION WITHIN A MODBUS HOLDING REGISTER ..........................................................................................39
MSB and LSB BYTE CONVENTION WITHIN A MODBUS HOLDING REGISTER ..............................................................39
REPRESENTATION OF A 32-BIT VALUE IN TWO CONSECUTIVE MODBUS HOLDING REGISTERS ...........................40
TYPE OF 32-BIT FLOATING POINT DATA (IEEE 754) ........................................................................................................41
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User Manual
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MODBUS TO CLOUD
"KEY-C" GATEWAYS
MI00725-1-EN
Page 5