Section 2 — System Components Hawk 1000
2-4 Part No. 750-366
2.4 Communications
2.4.1 Modbus
Modbus is an open serial protocol used by the
HAWK
1000 system
for sending and receiving control
commands,
position data, and diagnostic data between the
PLC
and attached
devices.
Modbus
communications
are managed by the SM2 module located to the right of the base unit in slot
4.
HAWK 1000 devices that communicate using Modbus include the burner flame safety control and the fuel, air,
and FGR actuators. The Modbus communication network allows burner control system status and fault
information to be transmitted to the PLC and displayed on the HMI screen, and in addition is used for actuator
control, feedback, and fault information.
Figure 2-2. Firing Rate screen
Figure 2-3. SM2 Modbus Module
To Next Page
Loading...