200
Troubleshooting
Section 7-2
Causes and Remedies for Communications Unit NS Indicator Errors
Next use the NS indicator to check the status of the Communications Unit,
and then take action in according to the following table.
Causes and Remedies for Communications Unit and I/O Unit TS Indicator
Errors
If there is no error after the MS indicator and NS indicator have been checked,
use the TS indicator of each Unit to check the status of the Communications
Unit and each I/O Unit, and then take action in according to the following
table.
No.
Communications
Unit NS indicator
status
Cause
Remedy
10
The Unit is in Bus Off status.
Check the connection status of the DeviceNet commu-
nications cable or the noise status.
A Slave already exits with the
same node number as the Com-
munications Unit.
Reset the node number so that it is not duplicated.
The baud rate does not match that
of the Master Unit.
Reset with the same baud rate as that of the Master
Unit.
After taking the above measures, restart the Communi-
cations Unit. If the problem persists, replace the Com-
munications Unit.
11
A timeout occurred in communica-
tions with the Master Unit.
Check the status of the Master Unit.
Check the connection status of the DeviceNet commu-
nications cable or the noise status.
After taking the above measures, restart the Communi-
cations Unit. If the problem persists, replace the Com-
munications Unit.
12
The Master Unit has not been
started correctly.
Check that the Master Unit has started normally.
There is a configuration error in
the Master Unit I/O area.
Check that the number of I/O points for the Master Unit
I/O area and the Communications Unit match.
13
No error
Proceed to the next item, Causes and Remedies for
Communications Unit and I/O Unit TS Indicator Errors.
ON (red)
Flashing (red)
Flashing (green)
ON (green)
No.
TS indicator status
Cause
Remedy
Communi-
cations Unit
I/O Units
14
The power supply to the I/
O Unit interface has
shorted.
The current consumption
of the I/O Unit interface
exceeds 0.4 A.
Check that the I/O Unit communica-
tions cable has not shorted.
Check that the total current con-
sumption of the communications
power supply for the I/O Unit does
not exceed 0.4 A.
After taking the above measures,
restart the Communications Unit.
The cable between the
Communications Unit
and the first I/O Unit is
disconnected.
After turning OFF the power supply
to the Communications Unit and all
I/O Units, correctly connect the
cable.
OFF
All I/O Unit TS indicators are not
lit.
Содержание DRT1-COM
Страница 1: ...OPERATION MANUAL Cat No W348 E1 05 DRT1 COM GT1 Series DeviceNet MULTIPLE I O TERMINAL ...
Страница 2: ...DRT1 COM GT1 Series DeviceNet MULTIPLE I O TERMINAL Operation Manual Revised May 2003 ...
Страница 3: ...iv ...
Страница 5: ...vi ...
Страница 13: ...xvi EC Directives 6 3 Keep DeviceNet communications cables as short as possible and ground to 100 Ω min ...
Страница 232: ...Authorized Distributor Cat No W348 E1 05 Note Specifications subject to change without notice Printed in Japan ...
Страница 233: ...DRT1 COM GT1 Series DeviceNet MULTIPLE I O TERMINAL Cat No W348 E1 05 OPERATION MANUAL ...