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1
SECTION 1
Functions of the NT20
NT20 is a new programmable terminal (PT) which incorporates a host interface unit and two RS-232C interface units in a
programmable terminal body. It can be easily installed and used. This section gives the operation examples and
characteristics of the NT20 so that you will understand the applications of the NT20.
1-1
Role and Operation of NT20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
1-1-1
Operations of NT20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3
1-2
Functions of NT20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
1-2-1
Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
1-2-2
Principal Functions of NT20 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5
1-2-3
Comparison between NT20S, NT20M, and NT20. . . . . . . . . . . . . .
6
1-2-4
Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7
1-3
Method for Connection to the Host. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
1-4
Communications with PLC by Direct Connection . . . . . . . . . . . . . . . . . . . . .
10
1-4-1
Functions of the Allocated Bits and Words . . . . . . . . . . . . . . . . . . .
10
1-4-2
Connecting to PLC from Other Companies . . . . . . . . . . . . . . . . . . .
12
1-5
Communications Using RS-232C (NT20-ST128) . . . . . . . . . . . . . . . . . . . . .
13
1-6
Before Operating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14
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 ...