GE 489 Communications Manual page 78

CGI–2
description .................................................................................... 11
format codes ................................................................................. 42
information ................................................................................... 11
Modbus ........................................................................................ 13
user-definable ............................................................................... 11
MODBUS
description .................................................................................. 1, 2
execute operation ............................................................................ 6
function code 03 ............................................................................. 5
function code 04 ............................................................................. 5
function code 05 ............................................................................. 6
function code 06 ............................................................................. 6
function code 07 ............................................................................. 7
function code 08 ............................................................................. 8
function code 16 ............................................................................. 8
loopback test .................................................................................. 8
performing commands ...................................................................... 9
read actual values ........................................................................... 5
read device status ........................................................................... 7
read setpoints ................................................................................ 5
store multiple setpoints .................................................................... 8
store single setpoint ........................................................................ 6
MODBUS FUNCTIONS ......................................................................... 5
R
RS232 COMMUNICATIONS ................................................................... 1
RS485 COMMUNICATIONS ................................................................... 1
T
TIMING ........................................................................................... 4
TRACE MEMORY .......................................................................... 12, 13
U
USER DEFINABLE MEMORY MAP ........................................................... 11
W
WAVEFORM CAPTURE ........................................................................ 12
489 GENERATOR MANAGEMENT RELAY – COMMUNICATIONS GUIDE
CHAPTER CGI: