201
Troubleshooting
Section 7-2
15
The cable is broken at the
Unit where the TS indica-
tor display changes.
After turning OFF the power supply
to the Communications Unit and all
I/O Units, replace the broken cable.
The cable between the
Communications Unit
and the first I/O Unit is
broken.
There is a lot of noise.
Remove the source of the noise.
The end connector is not
connected.
After turning OFF the power supply
to the Communications Unit and all
I/O Units, attach the end connector
to the I/O Unit interface connector 2
of the terminal I/O Unit.
The cable connected to
the Remote Terminal Unit
I/O Unit interface connec-
tor 1 is broken.
After turning OFF the power supply
to the Communications Unit and all
I/O Units, perform a continuity test
on the cable, and replace the bro-
ken cable.
The I/O Unit configuration
changed after the Unit
where the TS indicator
display changed.
After turning OFF the power supply
to the Communications Unit and all
I/O Units, return to the correct I/O
Unit configuration, and restart the
Communications Unit.
At the last Unit where the
green light is flashing,
one of the cables is bro-
ken.
After turning OFF the power supply
to the Communications Unit and all
I/O Units, check the connection sta-
tus of the cable. If the problem per-
sists, replace the cable after turning
OFF the power supply to the Com-
munications Unit and all I/O Units.
I/O Unit interface connec-
tor 2 are connected at the
Unit where the TS indica-
tor display changed.
After turning OFF the power supply
to the Communications Unit and all
I/O Units, correctly reconnect the
cable.
16
A specific error, such no
operating power supply,
has occurred in a Spe-
cial I/O Unit.
Check the operating power supply,
and provide the correct power sup-
ply. If the problem persists, replace
the Special I/O Unit in which the
error occurred.
No.
TS indicator status
Cause
Remedy
Communi-
cations Unit
I/O Units
ON (red)
(I/O Unit
interface
error)
The TS indicators on the Units
closer to the Communications
Unit are flashing green and the
indicators on the rest of the Units
are lit red.
Flashing (green)
ON (red)
All I/O Unit TS indicators are lit
red.
All I/O Unit TS indicators are lit
green.
The TS indicators on the Units
closer to the Communications
Unit are flashing green and the
indicators on the rest of the Units
are not lit.
Flashing (green)
OFF
Flashing
(green)
(Special I/O
Unit error)
There is a Special I/O Unit with
the TS and U.ERR indicators lit
red.
ON (green)
Summary of Contents for DRT1-COM
Page 1: ...OPERATION MANUAL Cat No W348 E1 05 DRT1 COM GT1 Series DeviceNet MULTIPLE I O TERMINAL ...
Page 2: ...DRT1 COM GT1 Series DeviceNet MULTIPLE I O TERMINAL Operation Manual Revised May 2003 ...
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Page 233: ...DRT1 COM GT1 Series DeviceNet MULTIPLE I O TERMINAL Cat No W348 E1 05 OPERATION MANUAL ...