Troubleshooting; Masters - YASKAWA MP900 Series User Manual

Network Maintenance

6.4.1 Masters

6.4 Troubleshooting

6.4.1 Masters
Problem
No DeviceNet
communications
6
When the 260IF Module detects an error during DeviceNet communications, it reports the error
via the LED indicators, I/O status function, and status function. The following table gives prob-
able causes and possible solutions.
The following table gives the status of indicators and status functions for normal operation
when the 260IF Module is set as a Master.
LED
MS lit green 8004
NS lit green
The following table gives possible solutions for errors that occur when the 260IF Module is
set as a Master.
Locations to Check
Indicators Status I/O Status
MS not lit - -
NS not lit
MS lit red - -
NS not lit
MS lit red - -
NS lit red
MS lit green 1010 0000
NS lit res
1008 -
www.dadehpardazan.ir 88594014-15
Status I/O Status
8000
Table 6.3 Troubleshooting the Master
Probable
Cause
No power to Check the rack or system bus cable connection to
the 260IF Mod- the 260IF Module.
ule.
Hardware mal- Replace the 260IF Module.
function
Hardware mal- Replace the 260IF Module.
function
Duplicate 1. Change the MAC ID address for the 260IF
Module and cycle the power.
MAC ID
2. Change the MAC ID addresses for other
DeviceNet devices and cycle the power to the
260IF Module.
Bus-off 1. Check the wiring and connections for
DeviceNet cables and connectors.
2. Check the power supply voltage and connection
for communications power supply.
3. Check the communications power supply volt-
age for each DeviceNet connector on the 260IF
Module (11 to 24 V).
4. Check the baud rate for each DeviceNet device
in the network.
5. Check the terminator (121 Ω) and connection
status.
6. Check the length of the network.
7. Replace the 260IF Module. Then either cycle
the power for the 260IF Module or disconnect
and re-insert the DeviceNet connectors.
6-8
Possible Solution