GE Industrial Solutions Entellisys 5.0 Integrator's Guide - Manual (Page 37)

Multipoint FlexLogic Operand States 37
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2.2 Multipoint FlexLogic Operand States
2.2.1 Bus Differential Operand States
Each zone has 6 different states shown in Table 2-32 . Each one of them corresponds to a different
bit in the data item.
Table 2-32 Bus Differential status bit field
The zone states for all 4 relay instances span across 2 consecutive modbus registers as shown in
Table 2-6 . See Bus Differential Operand States (2 items) on page 136 for memory locations.
Table 2-33 Bus Differential status offsets
Bit Value
0 Trip Dropout
1 Alarm Dropout
2 Trip Pickup
3 Alarm Pickup
4 Trip Operated
5 Alarm Operated
6 Backup Trip Operated
Zone Number Register
Offset Bit Offset Notes
Zone 1 0 0
Zone 2 0 7
Zone 3 0 14 This zone’s information spans
over two registers
Zone 4 1 5
1 12 Bits from 12 thru 15 are not used
and will always be set to 0