GE Industrial Solutions Entellisys 4.0 Integrator's Guide - Manual (Page 26)

Integrator’s Guide 26
1.1.2.17 Synch Check Flex Operand States
Each relay has 10 different states shown in Table 1-34 . Each one of them corresponds to a different
bit in the data item.
Table 1-34 Synch Check status bit field
The relay states for all12 relays span across 8 consecutive modbus registers as shown in Table 1-35 .
See PLC Interface (Read/Write) on page 110 for memory locations.
Table 1-35 Synch Check status offsets
Bit Value
0 Dead Source Operated
1 Dead Source Dropout
2 Synch Operated
3 Synch Dropout
4 Close Operated
5 Close Dropout
6 V1 Above Minimum
7 V2 Above Minimum
8 V1 Below Maximum
9 V2 Below Maximum
Zone Number Register
Offset Bit Offset Notes
Relay 1 0 0
Relay 2 0 10 This relay’s information spans
over two adjacent registers
Relay 3 1 4
Relay 4 1 14 This relay’s information spans
over two adjacent registers
Relay 5 2 8 This relay’s information spans
over two adjacent registers
Relay 6 3 2
Relay 7 3 12
Relay 8 4 6
Relay 9 5 0
Relay 10 5 10
Relay 11 6 4
Relay 12 6 14
7 8 Bits from 8 thru 15 are not used
and shall always be set to 0