GE Industrial Solutions EPM1500 Single Point Submetering System - Manual (Page 4)

TOC–2 EPM 1500 SUB-METER – INSTRUCTION MANUAL
TOC
4: COMMUNICATIONS MODBUS COMMUNICATIONS ........................................................................................4-1
RS485 W IRING FOR M ODBUS ......................................................................................... 4-1
RS232 W IRING FOR M ODBUS ......................................................................................... 4-2
M ODBUS C OMMANDS ......................................................................................................... 4-2
F IXED M ODBUS V ALUES ..................................................................................................... 4-2
M ODBUS D ATA R EGISTER (R4 T YPE ) G ROUPS ................................................................ 4-2
I NSTANTANEOUS D ATA I TEMS ............................................................................................ 4-3
32- BIT L ONG AND F LOAT D ATA F ORMATS ..................................................................... 4-3
MODBUS ACTIVATION .....................................................................................................4-4
O VERVIEW ............................................................................................................................ 4-4
C ONFIGURING A N EW H YPER T ERMINAL S ESSION .......................................................... 4-4
C ONFIRMING C ONNECTION TO THE EPM 1500 ............................................................ 4-5
L OGGING INTO THE M ETER ................................................................................................ 4-5
A CTIVATING M ODBUS C OMMUNICATIONS ....................................................................... 4-6
C HANGING M ODBUS S ETTINGS ......................................................................................... 4-7
L OGGING O UT ...................................................................................................................... 4-7
D ISABLING M ODBUS C OMMUNICATIONS ......................................................................... 4-7
MODBUS MEMORY MAP ..................................................................................................4-8
M EMORY M AP ...................................................................................................................... 4-8
5: MISCELLANEOUS REVISION HISTORY ...........................................................................................................5-1
R ELEASE D ATES ................................................................................................................... 5-1
C HANGES TO THE M ANUAL ................................................................................................ 5-1
WARRANTY .........................................................................................................................5-4
GE E NERGY W ARRANTY ..................................................................................................... 5-4
INDEX