RG-SFMOD
18
Drive Control & Communication
6
SCF Programming Parameters
6.1 Format
NOTE - Parameter Version
The Parameter List presented in Section 6.2 is valid only for SCF parameter version 312.
For revisions, refer to appropriate SCF Manual.
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 #
SCF 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.
For example, to program a value of 28.2 Hz, the user can program
28.2 into the SCF drive and the drive will display 28.2 but for Modbus
communications, the user must input 282. The one decimal place
is assumed. If the user wanted a value of 282 Hz, then for Modbus
communications he would have to input 2820.
2
= Two decimal places assumed (hundredths)
