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

RG-MCMOD 20
Drive Control & Communication
6 MC Programming Parameters
6.1 Format
NOTE - Attention
Parameter list presented in Section 6.2 is valid only for MC Software revision 213-083.
For revisions, refer to appropriate MC1000 (M101) or MC3000 (M301) Manual.
Abbreviations:
SA (1byte) drive address (1-247)
RA (1byte) register address
CRCH (1 byte) Cyclic Redundancy Check High
CRCL (1 byte) Cyclic Redundancy Check L
READING:
Message structure for reading 1 word: (most of parameters)
Request: SA 03 00 RA 00 01 CRCH CRCL
Response:
SA 03 02 DH DL CRCH CRCL
Message structure for reading 4 word: (Reg. #100 Fault history and #101 Software Version)
Request: SA 03 00 RA 00 04 CRCH CRCL
Response: SA 03 08 D1H D1L D2H D2L D3H D3L D4H D4L CRCH CRCL
WRITING:
Message structure for writing 1 word: (all parameters)
Request: SA 06 00 RA DH DL CRCH CRCL
Response:
SA 06 00 RA DH DL CRCH CRCL
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
2 = MC1000 without PID (SW version 213-083, revision 13 or older)
3 = MC1000 with PID
4 = MC3000
4th Column: Range of Adjustment The Modbus values are whole numbers. One decimal place is
assumed. A superscript 5 denotes parameter where two decimal
places are assumed.
For example, to program a value of 28.20 Hz, the user can program
28.20 into the MC drive and the drive will display 28.20 but for
Modbus communications, the user must input 2820. The one
decimal place is assumed. If the user wanted a value of 282 Hz,
then for Modbus communications he would have to input 28200.
5th Column: Default Value 5 = Two decimal places assumed (hundredths)