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3.3 Configuration with Combination of Multiple Control Units (1 System)
*1: The number of contact output/analog output to control equipement or devices varies depending on the control type or
the number of control units in the system.
For details, refer to the appropriate section for each control type.
・
Interlocking control
→
・
Compressor control
→
・
Schedule control
→
*2: To set up the extension units, the optional small type display unit is required.
For the precautions for system configuration using the extension units or small type display unit, refer to
Precautions for System Configuration
*3: The child terminal of control unit cannot have a connection with the extension unit or option unit.
Circuit measurement
(Current, Voltage, etc.)
Contact input
(Pulse, Contact)
PC
Ethernet
Control Unit
Engineering Tool
(EMU4-KNET)
Equipment / Device *1
Small type display unit
(EMU4-D65) *2
MODBUS RTU Communication
Control unit (Child terminal) *3
(MODBUS RTU Slave station)
Control the external output
of the child terminal
Control unit (Parent terminal)
(MODBUS RTU Master station)
Connecting the child terminal
enables to increase the
number of external output.
<Settable control type>
・
Interlocking control
・
Compressor control
・
Schedule control
<Max connectable number of child terminals by
control type>
Control type
Max connectable number
Interlocking
31 units
Compressor
3 units *
Schedule
31 units
*In order to execute the compressor control, at
least one child terminal must be connected.
Analog input
Equipment / Device *1
Equipment / Device *1
