Lenze MCH Series Drives Modbus Communications - Manual (Page 24)

RG-MHMOD 20
Drive Control & Communication
6 MCH Programming Parameters
6.1 Format
NOTE - Attention
Parameter list presented in Section 6.2 is valid only for MCH Software 213-070 revision
00. For revisions, refer to appropriate MCH Manual (MH01).
Abbreviations:
SA (1byte) drive address (1-247)
RA (1byte) register address
CRC (2bytes) Cyclic Redundancy Check
READING:
Message structure for reading 1 word: (most of parameters)
Request: SA 03 00 RA 00 01 CRC
Response:
SA 03 02 DH DL CRC
Message structure for reading 4 word: (Reg. #100 Fault history and #101 Software Version)
Request: SA 03 00 RA 00 04 CRC
Response: SA 03 08 D1H D1L D2H D2L D3H D3L D4H D4L CRC
WRITING:
Message structure for writing 1 word: (all parameters)
Request: SA 06 00 RA DH DL CRC
Response:
SA 06 00 RA DH DL CRC
LEGEND for Parameter List
1st Column: AC Tech Register # MC Register # followed by Hex value in parenthesis: 51 (33H)
2nd Column: Parameter 1 = Drive's programming parameter number
4th Column: Range of Adjustment The Modbus values are whole numbers. One decimal place is
assumed. A superscript 2 denotes those parameters where two
decimal places are assumed.
For example, to program a value of 11.20 Hz, the user can program
11.20 into the MCH drive and the drive will display 11.20 but for
Modbus communications, the user must input 1120. The two
decimal places are assumed. If the user wanted a value of 112 Hz,
then for Modbus communications he would have to input 11200.
5th Column: Default Value 2 = Two decimal places assumed (hundredths)