S7999B SYSTEM DISPLAY
65-0283—2
14
System S7999B Configuration
The S7999B can be configured to monitor all burner/boiler
systems via a System Modbus™ network. One S7999B is
designated the System S7999B (master) on the network, and
the other S7999Bs are designated as a Local S7999B (slave)
to provide system status for their respective burner/boiler
system.
Fig. 12 depicts this type of configuration. Only S7999Bs are
wired together in this configuration (using the COM 1 ports).
Only one S7999B can be configured as the System S7999B
on this Modbus™ network. This S7999B assumes the
Modbus™ master role on the COM 1 port. Only the System
S7999B can view any burner/boiler system on the network;
the Local S7999B can only view its own burner/boiler system.
Fig. 12. System Modbus™ network.
Up to 99 Local burner/boiler systems can be connected
together and displayed at the System S7999B.
A Modbus™ register interface is used in the Local S7999B to
provide status data to the System S7999B. Many of the
register addresses and definitions for the burner control,
expanded annunciator, and R7999 have the same definitions
that the S7810M specifies in its interface.
At the System S7999B a quick search for Local S7999Bs on
the System Modbus™ network can be performed. This
function is expected to be used after a new Local burner/boiler
system is attached to the System Modbus™ network. If the
quick search isn’t done, a slower, automatic search eventually
finds new Local burner/boiler systems.
R7999
FUEL AIR
RATIO CONTROL
S7830
EXPANDED
ANNUNCIATOR
RM78xx
BURNER
CONTROL
S7810M
MODBUS
S7999B
SYSTEM DISPLAY
S7999B
SYSTEM DISPLAY
CONTROLBUS
COM 1
COM 1
COM 2
M24228
MASTER
SLAVE
SYSTEM MODBUS
LOCAL MODBUS
SYSTEM S7999B
LOCAL S7999B
UP TO 99
LOCAL S7999B
SYSTEMS
UDC2500
THERMAL
SHOCK
UDC2500
PID LOAD
CONTROL
UDC2500
FEED PUMP
LEVEL CONTROL
UDC2500
STACK
TEMPERATURE
UDC2500
STEAM/FUEL
FLOW
R7999
FUEL AIR
RATIO CONTROL
S7830
EXPANDED
ANNUNCIATOR
RM78xx
BURNER
CONTROL
S7810M
MODBUS
S7999B
SYSTEM DISPLAY
CONTROLBUS
COM 1
COM 2
SLAVE
LOCAL MODBUS
LOCAL S7999B
UDC2500
THERMAL
SHOCK
UDC2500
PID LOAD
CONTROL
UDC2500
FEED PUMP
LEVEL CONTROL
UDC2500
STACK
TEMPERATURE
UDC2500
STEAM/FUEL
FLOW
R7999
FUEL AIR
RATIO CONTROL
S7830
EXPANDED
ANNUNCIATOR
RM78xx
BURNER
CONTROL
S7810M
MODBUS
S7999B
SYSTEM DISPLAY
CONTROLBUS
COM 1
COM 2
SLAVE
LOCAL MODBUS
LOCAL BURNER/
BOILER SYSTEM
LOCAL BURNER/
BOILER SYSTEM
LOCAL BURNER/
BOILER SYSTEM
LOCAL S7999B
UDC2500
THERMAL
SHOCK
UDC2500
PID LOAD
CONTROL
UDC2500
FEED PUMP
LEVEL CONTROL
UDC2500
STACK
TEMPERATURE
UDC2500
STEAM/FUEL
FLOW
MODBUS BAUD RATE MUST BE SET FOR 19200.
1
1
1
1
1
1
1
1