1-1SectionRole and Operation of the PT
2
1-1 Role and Operation of the PT
The NT21, NT31, NT31C, NT631, and NT631C are sophisticated operator inter-
faces (Programmable Terminals) that automatically display information and can
also be used for operations when necessary. The following gives a general de-
scription of the role and operation of the PT for those using a Programmable Ter-
minal (PT) for the first time.
1-1-1 Operation of a PT at an FA Production Site
The PT displays real-time information about the system and equipment operat-
ing status, etc. Its power of expression is enhanced by graphs and other visuals,
making the displays easy to understand.
Production Control (3)
Product
% achieved
Today’s target 560 441
Current production 305 275
Number defective 2 8
Number repaired 7 15
The PT warns of system or equipment failures and prompts the appropriate re-
medial 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 PT allows workers to use the PT as an operating
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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