Modicon Quantum 140NOC78000 Ethernet DIO Network Module

Modicon Quantum 140NOC78000 Ethernet DIO Network Module

The 140 CPU 434 12A, 140 CPU 534 14A, and 140 CPU 534 14B modules have a single slide switch that is used to select the comm parameter settings for the Modbus (RS-232) ports. The following illustration shows the slide switches for these two modules. The 140 CPU 311 10 uses both slide switches. The 140 CPU 434 12A, 140 CPU 534 14A, and 140 CPU 534 14B modules use only the slide switch on the right.

The CPU hardware defaults to bridge mode when the front panel switch is set to RTU or ASCII mode. When networking controllers, a panel device connected to the CPU Modbus port can communicate with the controller to which it is connected, as well as log into any nodes on the Modbus Plus network.

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