Control and status area
Section 5-3
60
5-3
Control and status area
After initialisation of the unit (RUN LED is ON), the control and status words
are exchanged between the PLC and the Unit during each I/O refresh. The
mapping of the control words and unit status words depends on the Machine
number set by the rotary switch at the front of the Unit.
The first word in the IR area allocated to the Unit will be indicated by IR n, the
last word by IR n+4.
The first two words are control words and are sent to the Unit. The next three
words are status words and are read from the Unit.
The mapping of the slave status words that are read from the Unit is defined
by the Unit settings (see section 5-1-2).
Note
During a configuration download or when a fatal error occurs in the unit, the
control words IR n and IR n+1 will not be processed.
CS1-series
For details on the area allocation in CS1-series PLC’s, see Appendix C.
Unit
number
IR area
0
IR100 ~ IR104
1
IR110 ~ IR114
2
IR120 ~ IR124
3
IR130 ~ IR134
4
IR140 ~ IR144
All PLC models
5
IR150 ~ IR154
6
IR160 ~ IR164
7
IR170 ~ IR174
8
IR180 ~ IR184
9
IR190 ~ IR194
A
IR400 ~ IR404
B
IR410 ~ IR414
All PLC models except:
C
IR420 ~ IR424
C200HS, C200HE,
D
IR430 ~ IR434
C200HG-CPU3[ ]-E/CPU4[ ]-E,
E
IR440 ~ IR444
C200HX-CPU3[ ]-E/CPU4[ ]-E
F
IR450 ~ IR454
Содержание C200HW-PRM21
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Страница 5: ...C200HW PRM21 PROFIBUS DP Master Unit Operation Manual Produced May 2000...
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