4. Troubleshooting (DeviceNet)
RC700 / RC90 Option Fieldbus I/O Rev.14
269
4.1.2.3 Master: Unestablished Communication
Master Unit LED
Error
Description
MS
NS
Green
Light ON
Light
OFF
Master
Unestablished
communication
Communications power supply OFF
No slave
♦
Process Flowchart
6
No Problem
Check
Check the following:
- Unconnected terminating resistor
- Unconnected or loose connector/signal wire
- Cable disconnection
Finish
Measure voltage of
communications power supply
at the master unit.
No Problem
No Problem
No Problem
Problem exists. (Fix it.)
Problem exists. (Fix it.)
Check that power is supplied to all slaves.
Replace the master unit.
Problem exists. (Fix it.)
Problem exists. (Fix it.)
No problem
No problem
No problem
No problem
Check for master unit configuration.
See 4.1.3.1 and 4.1.3.2.
Summary of Contents for RC700
Page 1: ...Robot Controller RC700 RC90 Option Fieldbus I O Rev 14 EM198C4088F ...
Page 2: ...Robot Controller RC700 RC90 Option Fieldbus I O Rev 14 ...
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Page 340: ...5 Maintenance Parts List 328 RC700 RC90 Option Fieldbus I O Rev 14 ...