Epson RC90

4. Troubleshooting (PROFIBUS DP)
300 RC700 / RC90 Option Fieldbus I/O Rev.14
Slave: Uninitialized Network
BF
ST
Master LED Condition
Light OFF
Red Light Blinking
Absent Slave LED Condition
(Uninitialized Network)
Light OFF Light OFF
♦ Process Flowchart
4
 No Problem
Check
Check the following:
- Unconnected terminating resistor
- Unconnected or loose connector/signal wire
- Cable disconnection
Finish
Measure voltage of all
slave power supplies.
 No Problem
 No Change
 No
Problem exists. (Fix it.)
Problem exists. (Fix it.)
The problem is fixed.
No problem
No problem
No change
Replace the unit.
Yes
No
See 4.2.3.1 and 4.2.3.2.
Consult the PROFIBUS manufacturer.
Replace moving cable.
(Replace deteriorated cable).
Normal Communication?