Parameter Description
Parameter Description
66
included.
*4) Unit: 0 denotes that the unit is 1; 1 denotes that the unit is 0.1; 2 denotes that the unit is 0.01; 3
denotes that the unit is 0.001.
*5) Error Code:
Error
Code
Error Item
Communication error exception content
H01
Error
Parity check: What the inverter has received is different from the initial
set.
H02
Sum Check
Error
Inverter side of the calculation of the received data value Sum Check
and the Sum Check which received are different.
H03
Protocol Error
The information the inverter received is a syntax error, or the
information is not received within the specified time, or CR and LF
codes are different from the initial set.
H04
Frame Error
The STOP bit the inverter received is different from the initial set.
H05
Overflow
Error
The inverter has not received the data for PC to write the incoming data.
H0A
Mode
Exceptions
The inverter is running or is not at a correct operation mode for writing.
H0B
Command
Code Error.
The input command codes cannot be handled by the inverter.
H0C
Data Range
Error
The set parameter and frequency data are outside the specified range.
*6) When the parameters have 9999 properties, write or read HFFFF instead of 9999.
*7) Sum check code
ASCII data transformation code: Add a binary code. The result (sum) of the next bit (the low
8-bit) is transformed into a 2-bit ASCII code (hexadecimal), which is referred to as the Sum
Check Code.
●
Communication examples
Example 1
.The computer sends a forward command to the inverter:
Step1. FA commands sent by the computer using format A:
Calculation
Sum Check: H30
+
H30
+
H46
+
H41+H30+H30+H30+H30+H32=H1D9;
Take the lower 8 bits
D9 to
convert to ASCII code
: H44 H39
Step2. The inverter responds to the computer using format C after receiving and processing the data:
ACK
Station number
0
CR
H06
H30 H30
H0D
Example 2.
The computer sends a stop command to the inverter:
Step1. FA commands sent by the PC via format A:
ENQ
Station Number
0
Command Code
HFA
Waiting Time
Data
H0002
Sum Check
CR
H05
H30 H30
H46 H41
H30
H30 H30 H30 H32
H44 H39
H0D