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78
Communicating with the PLC Using C200H Direct Communications
Section 2-7
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Turn ON the power to the PLC.
After “Connecting to Host” has been displayed for approximately 1 second,
normal operation starts.
Note
(1) If the power to the PLC is turned ON first, the CPU Unit of the PLC is sub-
jected to a system reset, making operations such as programming con-
sole impossible. Then, when the power to the NT20 is turned ON,
“Connecting to Host” is displayed on the NT20 screen for approximately
1 second, after which normal operation starts.
(2) If the I/O Connecting Cable is disconnected during system operation, an
I/O bus error occurs at the PLC and operation stops. If this happens, con-
nect the I/O Connecting Cable and cancel the error.
Power OFF
Turn the power OFF as follows:
Turn OFF the power supplies to the PLC and NT20 simultaneously.
The next time the power is turned ON, the NT20 displays the screen that was
displayed when the power was turned OFF.
Note
If the power to the NT20 is turned OFF first, the CPU Unit of the PLC is sub-
jected to a system reset, making operations such as programming console
impossible.
Turn OFF the system temporarily before replacing the NT20 (when a fault
occurs, for example). If the power to the NT20 only is turned OFF, the system
stops immediately and this could cause an accident or damage machinery.
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 ...