Mitsubishi CS-40507 Instruction Manual download pdf (Page 21)

5. PARAMETER DEFINITIONS

Depending upon which Modbus Plus master device is being used, data

registers may be referenced using a 5-digit(4nnnn) or 6-digit(40nnnn)

format. For convenience, this manual uses the 5-digit format. When using

the 6-digit format, the last 4 digits of the register remain the same and a

zero is inserted between the numeral 4 and the 4-digit register

number(nnnn).

The Modbus Plus option card generates error codes when inappropriate

operations occur. These codes are stored in register 40020(9C54h)

If a write occurs to the inverter while the inverter is in EXT mode, a 41h will

exist in register 40020. If a write occurs to the Real Time Monitor or the

Alarm History, 42h will exist in register 40020. 43h will exist in register

40020 if an out of range value is written to any parameter. See more error

code listings in the table below:

Error Codes for FR-A5NM

Error codes for FR-A5NM are stored in Extended Error Code Register

40020.

*1 Writing invalid data to Op Mode Register 40010 is not allowed and answered

"01 unsupported task" in the Error Code Register 40020.

*2 Access to undefined Registers in A5NM is answered "01 unsupported task" in

the Error Register 40020.

*3 Reading invalid Monitor data, writing to Pr. 77, Pr. 79 are answered "01

unsupported task" in the Error Register 40020.

Code Definition Explanation

01h Unsupported Task (*1, 2, 3) You request an unsupported Task.

03h Invalid Register You use an undefined register.

04h DPR Read Failure

You cannot read such data from Dual

Port RAM.

05h Write Cmd Failure You cannot write data to this register.

41h Mode Error

e.g. You try to write to the register

41000(Pr. 0) while inverter is running.

42h Instruction Error

e.g. You try to write to Real Time Monitor

because it is read only.

43h Data Range Error

You try to write an out of range data to

this register.

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 37 38

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Mitsubishi CS-40507 Instruction Manual Page 21