GE MIFII GEK-106237P Instruction Manual page 206

APPENDIX C
C.3COMMAND EXECUTION
®
Commands with ModBus Intel format setting are executed in two steps: selection and confirmation. First, send the
command or operation selection command. When the relay response arrives, send the confirmation. It is necessary to send
the relay password. The structure for both commands is the same; the only variation is the related code.
When Motorola is the selected ModBus format setting, commands only need the confirmation step.
®
The ModBus function used is 16 (10h), PRESET MULTIPLE SETPOINTS. It consists of a writing of the operation code in
address 0 (000H). The available commands list is as follows:
INTEL SELECTION
Intel Request:
FIELD
Relay address
Function
Beginning address
Number of registers
Number of bytes
Value of the registers Register1=> (INTEL) Command code (Low byte – High byte)
CRC
Intel Reply:
GEK-106237P
INTEL
COMMAND SELECTION CONFIRMATION CONFIRMATION
Setting change 01H
Thermal Image 03H
Reset
Open breaker 07H
LEDs reset 09H
Change to group 1 0DH
Change to group 2 0FH
Oscillography trigger 17H
Set number of 2FH
openings
Set I2 31H
Close breaker 39H
Time synchronization 0FEH
LENGTH
1 byte
1 byte (10H)
1 word (000H) (High byte – low byte)
1 word (0001H) (High byte – low byte)
1 byte (02H)
1 word
FIELD LENGTH
Relay address 1 byte
Function 1 byte (10H)
Beginning address 1 word (000H) (High byte – low byte)
Nº of registers 1 word (0003H) (High byte – low byte)
CRC 1 word
MIFII Digital Feeder Relay
MOTOROLA
02H 02H
04H 04H
08H 08H
0AH 0AH
0EH 0EH
10H 10H
18H 18H
30H 30H
32H 32H
3AH 3AH
Not applicable 0FEH
C.3 COMMAND EXECUTION
C
C-3