1-1SectionRole and Operation of the NT21
2
1-1 Role and Operation of the NT21
The NT21 is a sophisticated operator interface (Programmable Terminal) that
automatically displays information and can also be used for operations when
necessary.
The following gives a general description of the role and operation of
the NT21 for those using a Programmable Terminal (PT) for the first time.
1-1-1 Operation of an NT21 at an FA Production Site
The
NT21 displays real-time information about the system and equipment oper
-
ating
status, etc. Its power of expression is enhanced by graphs
and other visu
-
als, making the displays easy to understand.
Production
Control (3)
Product
% achieved
Today’s
target
560
Current production 305
Number defective 2
Number repaired 7
NT21 5%
NT21
The
NT21 warns of system or equipment failures and prompts the appropriate
remedial action.
Alarm
Assembly
line B
Positioning pin
is defective. Line stopped.
Check the following.
1. Defective pin L3
2. Position of dog M2
3. Mounting of photosensor P5
Setting
touch switches on the NT21 allows workers to use the NT21 as an
oper
-
ating panel; the results of the operations are transmitted to the host.
Electroplating
control
Transport
Electr.
head
Wash.
head
Corr. prv.
head
Clamp
Unclamp
Int. stop
Adv.
Rev.
Electro-
lyte
Wash
Corr.
prv.fluid
Production Line Status
Monitoring
Directions to Workers on
the Shop Floor
Panel Switch Functions
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