The System 450 control module with Modbus communications is an RS485, RTU compliant Modbus subordinate device. You can use it to connect your System 450 control system to Modbus networks and communicate over them.
The System 450 Modbus communication control module also enables your entire control system to respond to data requests and commands from a Modbus master device on the Modbus network.
Control by ________ | System 450 Control Modules | |||
---|---|---|---|---|
Standard | Communications | Reset | Hybrid | |
C450CPN-4 C450CQN-4 C450CBN-4 C450CCN-4 |
C450CEN-1 C450CRN-1 |
C450RBN-3 C450RCN-3 |
C450CPW-400 | |
Controlled condition | ||||
Temperature | X | X | X | X |
Pressure | X | X | - | X |
Humidity | X | X | X | X |
Combination of conditions | X | X | X | X |
Control capabilities | ||||
On/Off relay control | X | X | X | X |
Analog proportional control (direct and reverse action) | X | X | X | X |
Analog proportional plus integral control (direct and reverse action) | X | X | X | X |
Combination of On/Off relay and analog output control | X | X | X | X |
Stand-alone control | X | - | X | X |
Multi-stage control (relay or analog) | X | X | X | X |
Network communications | - | X | - | - |
High input signal selection | X | X | - | X |
Differential control | X | X | - | X |
Output signal
limiting output signal update rate Output signal deadband |
X | X | - | - |
Binary input control for relay outputs | X | X | - | - |
On/Off duration time
control Minimum On/Off time On/Off time delay |
X | X | - | - |
Temperature and humidity reset control | - | - | X | - |
Scheduling and temperature setback control | - | - | X | - |
Reset setpoint control | - | - | X | - |
Setback scheduling | - | - | X | - |
Run-time balancing | - | - | X | - |
Hybrid analog output control | - | - | - | X1 |
1 Only on output OUTA1.