72 then the inverter determines operating status of (Page 79 / 100) Sunfar E550 Series Universal Low-Power Inverter User Manual

SUNFAR Self-Defined Communication Protocol 72

then the inverter determines operating status of slave machine in line with setting

content set by communication aid function (function code: F4.03). (In case of

receiving message from main station in the period, it’s necessary to make control

based on control word of new message).

1.2.3 Message structure

The frame size of each message is between 11 and 18 bytes (depend on data format)

and the character type can be ASC II code and hexadecimal value.

Data representation rules: hexadecimal, high-order first and then low-order, shown

as below:

(1) The ASC II code of data 3800H is expressed as the following:

Data location 9 10 11 12

Data value (hexadecimal) 33 38 30 30

(2) The hexadecimal value of data 3800H is expressed as the following (invalid bit

is filled with hexadecimal “0”):

Data location 9 10 11 12

Data value (hexadecimal) 00 00 38 00

E550 Series Universal Low-Power Inverter