S7999B SYSTEM DISPLAY
9
65-0283—2
Local S7999B Configuration
The S7999B can be configured to manage a single burner/
boiler system only. In this configuration a single S7810M
device is included in the wiring along with zero or more UDC
controllers that perform one of the burner control applications.
Multiple UDC controllers can be connected in this network.
Typical configuration results in only a single instance of each
UDC application type installed on the network, but the system
isn't restricted to just one instance. Multiple UDC controllers
for any application type can be included.
Three variations of this configuration based on COM 1 port
usage are possible:
• ControLinks™ R7999 commissioning
• Subsystem of System Modbus™ network
• No additional connection
Fig. 6 depicts the configuration when COM 1 isn't used for any
other connection, i.e., the S7999B manages exclusively just
the burner/boiler system connected to the COM 2 port.
Fig. 6. Local S7999B configuration (COM 1 not used).
In this configuration, the R7999 may be connected to the ControlBus, and its status is visible from the S7810M. Only one
S7810M is connected, but multiple UDCs can be connected in this configuration. Fig. 7 shows the wiring for this configuration.
S7810M
MODBUS
RM78xx
BURNER
CONTROL
S7830
EXPANDED
ANNUNCIATOR
R7999
FUEL AIR
RATIO CONTROL
UDC2500
THERMAL
SHOCK
S7999B
SYSTEM DISPLAY
COM 1
M24225
COM 2
MASTER
SLAVE
LOCAL
MODBUS
CONTROLBUS
SLAVE
UDC2500
STACK
TEMPERATURE
UDC2500
FEED PUMP
LEVEL CONTROL
SLAVE
UDC2500
PID LOAD
CONTROL
SLAVE
UDC2500
STEAM/FUEL
FLOW
SLAVE
SLAVE
MODBUS BAUD RATE MUST BE SET FOR 19200.
1
1
