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206
NT20 Status Control
Section 5-4
❍
: OK
×
: NG
Since all the CVM1/CV-series AR area bits are allocated to the system, they
cannot be used for applications not related to the system.
The range of each memory area differs according to the PLC type.
Note
(1) LR 0000 to LR 00199 are converted to CIO 01000 to CIO 01199.
(2) The EM Area is supported only by the C200HX/HG/HE-(Z)E PLCs.
1,2,3...
1.
Use the Support Tool to set the area at the PLC used for allocation of the
PT status control area (PLC
→
PT).
2.
Write a PLC program for writing the control data into the “PT status control
bit” of the PT status control area.
• Timing for Control of the PT Status Control Bit
The PT status control bit is not read when the NT20 is started up. It is read,
and control executed, only when the contents of the PT status control bit
are read for the first time after the NT20 is started up.
Since NT20 status control is executed when the bit corresponding to the
PT status control bit changes, in order to perform the same control again
the corresponding bit must be specified again.
Example of Use of PT Status Control Bit
The example below explains how operation with the PT status control bit can
be used to use the NT20 like a warning lamp.
• Setting with the Support Tool
Make the following setting with the Support Tool.
Allocated word for PT status control area: Word 0100
• PLC Program
Create the PLC ladder program as follows.
TU
---
---
---
---
TC area,
Timer Completion Flags
×
C
TC Area
Counter PVs
×
TC Area
Counter PVs
×
TC Area
Counter PVs
×
CU
---
---
---
---
TC area,
Counter Completion Flags
×
W
---
---
---
---
WR
Not for
Host Link
TK
---
---
---
---
Task Flags
×
D
DM Area
❍
DM Area
❍
DM Area
❍
E
EM Area
(See note 2.)
❍
EM Area
Current bank
Not for
Host Link
EM Area
Current bank
Not for
Host Link
E0_to EC_
---
---
---
---
EM Area
EM bank 0 to C
Not for
Host Link
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 ...