Delta Electronics VFD-EL series, User Manual

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Revision 2016/03, 6ELE, V1.14
4-81
Content Address Function
Bit 10
1: Operation command controlled by communication
interface
Bit 11-15 Reserved
2102H Frequency command (F)
2103H Output frequency (H)
2104H Output current (AXX.X)
2105H Reserved
2106H Display analog signal of PID feedback input terminal
2107H Reserved
2108H DC-BUS Voltage (UXXX.X)
2109H Output voltage (EXXX.X)
210AH Display temperature of IGBT (°C)
2116H User defined (Low word)
2117H User defined (High word)
Note: 2116H is number display of Pr.00.04. High byte of 2117H is number of decimal places of 2116H. Low
byte of 2117H is ASCII code of alphabet display of Pr.00.04.
3.6 Exception response:
The AC motor drive is expected to return a normal response after receiving command messages from the
master device. The following depicts the conditions when no normal response is replied to the master device.
The AC motor drive does not receive the messages due to a communication error; thus, the AC motor drive
has no response. The master device will eventually process a timeout condition.
The AC motor drive receives the messages without a communication error, but cannot handle them. An
exception response will be returned to the master device and an error message “CExx” will be displayed on
the keypad of AC motor drive. The xx of “CExx” is a decimal code equal to the exception code that is
described below.
In the exception response, the most significant bit of the original command code is set to 1, and an exception
code which explains the condition that caused the exception is returned.
Example of an exception response of command code 06H and exception code 02H:
ASCII mode: RTU mode:
STX ‘:’ Address 01H
Address Low
Address High
‘0’ Function 86H
‘1’ Exception code 02H
Function Low
Function High
‘8’ CRC CHK Low C3H
‘6’ CRC CHK High A1H
Exception code
‘0’
‘2’
LRC CHK Low
LRC CHK High
‘7’
‘7’
END 1
END 0
CR
LF