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7.6.2 Setting of Unit Numbers
By default, the unit number for the communication port is set to 1 in the system registers.
In a PC(PLC) link that connects multiple PLCs on the same transmission line, the unit number must be
set in order to identify the different PLCs.
The unit number is specified either by using
the SYS1 instruction
or
the system register
.
Note1) The priority order for unit number settings is as follows:
1. SYS1 instruction
2. System registers
Note2) Unit numbers should be set sequentially and consecutively, starting from 1, with no breaks
between them. If there is a missing unit number, the transmission time will be longer.
Note3) If fewer than 16 units are linked, the transmission time can be shortened by setting the largest
unit number in system register no. 47.
Unit numbers are the numbers to identify the different PLCs on the same network. The same number
must not be used for more than one PLC on the same network.
Note:
When using the PC(PLC) link with the RS232C, the number of units is 2.
Содержание FP0R Series
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Страница 15: ...Chapter 1 Functions and Restrictions of the Unit ...
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Страница 25: ...Chapter 2 Specifications and Functions of Control Unit ...
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Страница 39: ...Chapter 3 Expansion ...
Страница 45: ...3 7 3 4 Terminal layout diagram Model No Terminal layout diagrams E8RS E8RM E16RS E16RM E8YRS ...
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Страница 49: ...Chapter 4 I O Allocation ...
Страница 53: ...Chapter 5 Installation and Wiring ...
Страница 73: ...Chapter 6 Preparation of USB Port ...
Страница 77: ...6 5 5 Click Finish on the following screen to be displayed ...
Страница 79: ...6 7 4 Double click on FP0R 5 Click Update Driver ...
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Страница 85: ...Chapter 7 Communication ...
Страница 139: ...7 55 Sample program For Type II Use a program as below to directly specify a MODBUS address ...
Страница 141: ...Chapter 8 High speed Counter Pulse Output and PWM Output Functions ...
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Страница 199: ...Chapter 9 Security Functions ...
Страница 211: ...Chapter 10 Other Functions ...
Страница 217: ...Chapter 11 Self Diagnostic and Troubleshooting ...
Страница 227: ...Chapter 12 Precautions During Programming ...
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Страница 243: ...Chapter 13 Specifications ...
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Страница 255: ...Chapter 14 Dimensions and Others ...
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Страница 263: ...Chapter 15 Appendix ...
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