GEK-113032A W650 Wind Generator Protection System B-7
APPENDIX B B.2 MODBUS W650
B
B.2.6 FUNCTION CODES
CODE MODBUS
NAME
W650
DEFINITION
COMMENT
HEX DEC
03 3 Read Holding
Registers
Reading of any
value
Any of these two functions allow the master to read 1 or more consecutive relay
addresses. Registers are always 16-bit long with the most important byte first. The
maximum number of registers that can be read in a single package is 125, equivalent
to 250 bytes.
04 4 Read Input
Registers
Reading of any
value
10 16 Preset Multiple
Registers
Writing This function allows writing 1 or more registers representing one or more settings.
Registers are 2-byte long values, transmitted with the most important byte first. The
maximum number of registers to be written in a single package is 125.
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