SunSaver MODBUS Specifications

ManualsBrandsMORNINGSTAR ManualsSolar System AccessoriesSunSaver MPPT-15L Charge controller MPPT 12 V, 24 V 15 A

SunSaver MPPT MODBUS Specification v08

http://www.morningstarcorp.com 2/28 14 July 2010

Contents

CONTENTS ......................................................................................................................................................... 2

GENERAL INFORMATION ............................................................................................................................ 3

PARAMETERS ................................................................................................................................................... 3

SUPPORTED MODBUS® FUNCTIONS ........................................................................................................ 3

READ HOLDING REGISTERS (0X03) AND READ INPUT REGISTERS (0X04) .......................................................... 3

WRITE SINGLE REGISTER (0X06) ..................................................................................................................... 10

READ DEVICE IDENTIFICATION (0X2B, SUBCODE 0X0E) .................................................................................. 10

VARIABLES AND DEFINITIONS ................................................................................................................ 11

READ HOLDING AND READ INPUT REGISTERS .................................................................................................. 11

EEPROM VALUES ........................................................................................................................................... 18

COILS ............................................................................................................................................................... 25

EXAMPLES ...................................................................................................................................................... 27

READ HOLDING REGISTER, SCALING ............................................................................................................... 27

READ HOLDING REGISTER, 2 WORD VALUES ................................................................................................... 27

REFERENCES .................................................................................................................................................. 28

DOCUMENT REVISION HISTORY ............................................................................................................. 28