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EC Directives
6
10. Always tighten the connector screws after connecting communications ca-
bles.
11. The maximum pull load for cables is 30 N. Do not apply loads greater than
this.
12. Confirm that the current capacity of the connected device is 150 mA or less
before using the 5-V power supply from pin 6 of serial port A or port B. The
5-V output of the NT20 is 150 mA maximum at 5 V
±
5%.
13. Confirm the safety of the system before turning ON or OFF the power sup-
ply or pressing the reset switch.
14. The whole system may stop depending on how the power supply is turned
ON or OFF. Turn ON or OFF the power supply according to the specified
procedure.
15. Start actual system application only after sufficiently checking screen data
and the operation of the program in the PLC (host).
16. Do not press any touch switch with a force greater than 30 N.
17. Do not accidentally press touch switches when the Backlight is not lit or
when the display does not appear. Confirm the safety of the system before
pressing touch switches.
18. Signals from the touch switches may not be input if the switches are
pressed consecutively at high speed. Confirm each input before proceed-
ing to the next touch switch.
19. To ensure greater safety for numeric inputs, use the upper/lower limit set-
ting function.
20. When transferring data in screen units, also transfer any data associated
with the screen, such as memory tables or direct connection data, if any of
this data has changed.
21. To assure system safety, incorporate a program that periodically calls PT
operation bits from the host side to check that the PT is properly operating.
22. An afterimage will remain if the same patterns are displayed continuously
for extended periods of time (e.g., 24 hours). Use the screen saver or pe-
riodically change the display to prevent afterimages.
23. Do not use benzene, paint thinner, or other volatile solvents, and do not
use chemically treated cloths.
24. Do not attempt to disassemble, repair, or modify the PT in any way.
25. The backlight in the PT contains mercury. Do not dispose of the PT togeth-
er with waste to be processed at disposal plants. Dispose of the PT accord-
ing to all local laws, regulations, and ordinances as they apply.
26. Confirm the installation conditions periodically when the PT is being used
in an environment subject to oil or water.
27. Water resistance will be lost if the front sheet is not present. Confirm that
the front sheet is present before using the PT.
6
EC Directives
Conforming Directive
The NT20 PTs conform to the EMC Directive.
Summary of Contents for NT20
Page 1: ...Programmable Terminal Cat No V091 E1 01 NT20 USER S MANUAL ...
Page 2: ...NT series Programmable Terminal User s Manual Produced March 2007 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 9: ...x TABLE OF CONTENTS ...
Page 15: ...xvi ...
Page 21: ...xxii EC Directives 6 ...
Page 37: ...16 Before Operating Section 1 6 ...
Page 153: ...132 Transferring the Resource Data Section 3 11 ...
Page 185: ...164 Numeral Setting Section 4 8 ...
Page 267: ...246 Key to Programs Section 6 8 ...
Page 281: ...260 Specifications Appendix A ...
Page 285: ...264 Transporting and Storing PTs Appendix C ...
Page 303: ...282 Function Restrictions Depending on the Support Tool Appendix I ...
Page 307: ...286 Index ...
Page 309: ...288 Revision History ...