Rockwell Automation 2711P Creating Modbus Applications - Manual (Page 75)

Publication 2711P-UM002B-EN-P - March 2007
Modbus Unsolicited Serial Address Definitions 75
Holding Registers Default types are shown in bold.
Holding Registers
Decimal Addressing
Type Word, Short, BCD
Format 4xxxxx
Security Read/Write
Range 400001 - 409999
Type Boolean
Format 4xxxxx.bb
Security Read/Write
Range 4xxxxx.0 - xxxxx.15
Type Float, DWord, Long, LBCD
Format 4xxxxx
Security Read/Write
Range 400001 - 409998
Type String HiLo or LoHiByte Order
Format 400001.2H - 409999.240H
.Bit is string length,
Range 2 - 240 bytes
Security Read/Write
Range 400001 - 409999
Length 2 - 240 bytes