Badger Meter Model IOG User Manual
Page 35
Modbus Coil Description
Modbus Coil
Notes
Reset Running Totalizer
1
Forcing this coil ON will reset the running totalizer After reset, the coil
automatically returns to the OFF state
Reset Grand Totalizer
2
Forcing this coil ON will reset both the running totalizer and the grand
totalizer After reset, the coil automatically returns to the OFF state
3…8
Spares
Alarm Set point 1
9
0 = Set point OFF, 1 = Set point ON
Alarm Set point 2
10
0 = Set point OFF, 1 = Set point ON
11…16
Spares
Table 7: Modbus coil map
Opcode 01 - Read Coil Status
This opcode returns the state of the alarm coils The following Coils are defined:
Coil #
Description
9
Alarm Set point 1
10
Alarm Set point 2
11 and up
Spare
Table 8: Read coil status
Command:
Reply:
Opcode 03 - Read Holding Registers
This opcode returns the input holding registers, such as flow rate or totalizer
NOTE:
N
Each value must be requested individually Return of a block of registers is not implemented at this time
Example requesting flow rate in floating point format
Command:
Reply:
Opcode 05 - Force Single Coil
This opcode sets the state of a single coil (digital output) The following Coil Registers are defined:
Coil #
Description
1
Reset Totalizer
2
Grand Totals
3 and up
Spares
Table 9: Force single coil
The transition of coil from 0 to 1 will initiate function This bit is auto reset to 0, so there is no need to set it to 0 after a totalizer
reset command
Command:
Reply:
User Manual
Page 35
August 2013