Epson RC90 Manual page 295

♦ Communications Power Supply
When sharing the communications power supply with I/O devices, provide power
sources separately.
Separating power source prevents noise caused by I/O device operations from affecting
communication.
RC700 / RC90 Option Fieldbus I/O Rev.14
Communications
Power Supply 24V
Disconnect I/O devices from the communications power supply.
4. Troubleshooting (DeviceNet)
Power Supply Tap
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