Epson RC90 Manual page 286

4. Troubleshooting (DeviceNet)
4.1.2.5 Absent Slave
Light
OFF
♦ Process Flowchart
Check
 No Problem
 No Problem
 No Problem
 No Problem
274
Master Unit LED
MS NS
Green
Light Absent slave
Blinking
8
Measure voltage of
communications power supply
at the master unit.
No problem
Check the following:
- Unconnected terminating resistor
- Unconnected or loose connector/signal wire
- Cable disconnection
No problem
Check that power is supplied to all slaves.
No problem
Check for master unit configuration.
No problem
Replace the master unit.
Error
- No slave (Error detection before
communication establishment)
- Communications power supply OFF
Problem exists. (Fix it.)
Problem exists. (Fix it.)
See 4.1.3.1 and 4.1.3.2.
Problem exists. (Fix it.)
Problem exists. (Fix it.)
RC700 / RC90 Option Fieldbus I/O Rev.14
Description
Finish