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Hardware Faults
Section 6-1
6-1
Hardware Faults
When a fault relating to the operation of the NT11S occurs, find the symptoms in
the table below and respond by following the corresponding “Remedy” indicated in
the table.
NT11S Symptoms
Cause
Remedy
Nothing is displayed on
the screen (it is complete-
ly green yellow).
Screen No.0 has been read at the
host side.
This is not an error. Change the screen number.
(Refer to “4-3 Screen Display”, page 80.)
Communication with the
support tool not possible.
The Transmit Mode has not been es-
tablished.
Display the system menu and select the Transmit
Mode.
(Refer to “3-6 Registering the Screen Data”, page 54.)
Not connected to the support tool.
Check the installation of the connector cable.
(Refer to “2-3 Connecting to the Support Tool”, page
25.)
Cannot communicate with
the PC.
Memory switch settings do not
match.
Check the communication setting in the “Memory
Switch” menu of the Maintenance Mode, and match
the PC and NT11S settings.
(Refer to “3-7 Setting the Conditions of Communica-
tions with the PC by Using the Memory Switches”,
page 57.)
NT11S and PC are not correctly con-
nected.
Check that the type, length and installation of the con-
nector cable match the specifications.
(Refer to “2-4 Connection to a PC by the Host Link
(RS-232C Type)”, page 26, and “2-5 Connection to a
PC by the Host Link (RS-422A Type)”, page 31.)
In a host link connection, the PC ter-
mination resistance setting is incor-
rect.
Set the PC termination resistance correctly.
(Refer to “2-4 Connection to a PC by the Host Link
(RS-232C Type)”, page 26, and “2-5 Connection to a
PC by the NT Link (RS-422A Type)”, page 31.)
Summary of Contents for NT11S
Page 1: ...Cat No V029 E1 2 NT11S Programmable Terminal OPERATION MANUAL ...
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Page 5: ...iii NT series Programmable Terminal Operation Manual Produced June 1997 ...
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