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Modbus Memory Map
489
Communications Guide
http://www.GEindustrial.com/multilin
11
GE Multilin
489 Memory Map The 489 memory map is shown in the following table.
Table 1: 489 Memory Map (Sheet 1 of 29)
ADDR NAME RANGE STEP UNITS FORMAT DEFAULT
PRODUCT ID
0000 GE Multilin Product Device Code N/A N/A N/A F1 32
0001 Product Hardware Revision 1 to 26 1 N/A F15 N/A
0002 Product Software Revision N/A N/A N/A F16 N/A
0003 Product Modification Number 0 to 999 1 N/A F1 N/A
0010 Boot Program Revision N/A N/A N/A F16 N/A
0011 Boot Program Modification Number 0 to 999 1 N/A F1 N/A
MODEL ID
0040 Order Code 0 to 16 1 N/A F22 N/A
0050 489 Revision 12 1 N/A F22 N/A
0060 489 Boot Revision 12 1 N/A F22 N/A
COMMANDS
0080 Command Function Code (always 5) 5 N/A N/A F1 N/A
0081 Command Operation Code 0 to 65535 1 N/A F1 N/A
0088 Communications Port Passcode 0 to 99999999 1 N/A F12 0
00F0 Time (Broadcast) N/A N/A N/A F24 N/A
00F2 Date (Broadcast) N/A N/A N/A F18 N/A
USER_MAP / USER MAP VALUES
0100 User Map Value #1 of 125... 5 N/A N/A F1 N/A
017C User Map Value #125 of 125 5 N/A N/A F1 N/A
USER_MAP / USER MAP ADDRESSES
0180 User Map Address #1 of 125... 0 to 3FFF 1 hex F1 0
01FC User Map Address #125 of 125 0 to 3FFF 1 hex F1 0
STATUS / GENERATOR STATUS
0200 Generator Status 0 to 4 1 – F133 1
0201 Generator Thermal Capacity Used 0 to 100 1 % F1 0
0202 Estimated Trip Time On Overload 0 to 65535
1
1sF12 –1
0203 Communications Setpoint Access 0 to 1 N/A N/A F126 N/A
STATUS / SYSTEM STATUS
0210 General Status 0 to 65535 1 N/A F140 0
0211 Output Relay Status 0 to 63 1 N/A F141 0
0212 Active Setpoint Group 0 to 1 1 N/A F118 0
STATUS / LAST TRIP DATA
0220 Cause of Last Trip 0 to 139 1 – F134 0
0221 Time of Last Trip N/A N/A N/A F19 N/A
0223 Date of Last Trip N/A N/A N/A F18 N/A
0225 Tachometer Pretrip 0 to 7200 1 RPM F1 0
0226 Phase A Pre-Trip Current 0 to 999999 1 Amps F12 0
0228 Phase B Pre-Trip Current 0 to 999999 1 Amps F12 0
022A Phase C Pre-Trip Current 0 to 999999 1 Amps F12 0
022C Phase A Pre-Trip Differential Current 0 to 999999 1 Amps F12 0
022E Phase B Pre-Trip Differential Current 0 to 999999 1 Amps F12 0
0230 Phase C Pre-Trip Differential Current 0 to 999999 1 Amps F12 0
0232 Negative Sequence Current Pretrip 0 to 2000 1 % FLA F1 0
0233 Ground Current Pretrip 0 to 20000000 1 A F14 0
0235 Pre-Trip A-B Voltage 0 to 50000 1 Volts F1 0
0236 Pre-Trip B-C Voltage 0 to 50000 1 Volts F1 0
0237 Pre-Trip C-A Voltage 0 to 50000 1 Volts F1 0
0238 Frequency Pretrip 0 to 12000 1 Hz F3 0
023B Real Power (MW) Pretrip –2000000 to 2000000 1 MW F13 0
1, 2, 3 See Table footnotes on page 39