NO.6 Detailed Function Description
Secondary reverse compensation of CDH is 34H, so transmitted data content is:
3AH 30H 31H 30H 32H 30H 33H 30H 33H 30H 42H 42H 38H 33H 34H 0DH 0AH
4. End bit
RTU mode ends in a manner of mute (>50ms) and ASCII ends in a manner of
CR(0DH)LF(0AH).
[Note] Data type in the communication: Transmitted data in the communication is
hexadecimal integer, for parameter value of function code, the minimum unit can be
determined according to scaling position of the parameter in function list; for instance,
the minimum unit of P003 is 0.01Hz. Thus, communications transmission 3000
represents 30.00Hz as per Modbus protocol.
(II) Function examples
1. 01 Read function code data
[Example] Read main frequency (function P003), parameter value is 30.00Hz (0B B8 in
hexadecimal system)
2. 02 Alter function code
[Example] Alter parameter value of main frequency (function mode P003) into 30Hz (0B B8
in hexadecimal system)
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