Epson RC90 User Manual

4. Troubleshooting (DeviceNet)
RC700 / RC90 Option Fieldbus I/O Rev.14 259
4.1.1.2 Checking Network Status
(1) Master Status: MS/NS LEDs
LED
Color
Light Condition
MS (Module Status)

Green

Red

ON

Blinking

OFF
NS (Network Status)

Green

Red

ON

Blinking

OFF
(2) Node Number of Absent Slaves
Absent slaves are disconnected from or not added to the network.
1. See the status flag regarding to the removal and addition if the master has status
information.
2. See the MS/NE LEDs of all slaves if the master has no status information.
(3) Absent Slave Status: MS/NS LEDs
LED
Color
Light Condition
MS (Module Status)
 Green
 Red
 ON
 Blinking
 OFF
NS (Network Status)

Green

Red

ON

Blinking

OFF
(4) Physical Node Location of Absent Slave
PLC
Slave
Branch Tap
Communications
Power Supply
Terminating
Resistor
Slave
Slave
Slave Slave
A communication time out error occurred.
Start the examination from this
block when the error occurred here.
Master
Branch Tap
Terminating
Resistor
(5) Error Occurrence Condition
 Immediate occurrence (high reproducibility)
 Rare occurrence (low reproducibility)

Epson RC90 Specifications

General

Brand	Epson
Model	RC90
Category	Controller
Language	English