Rockwell-automation 1771-IFE ANALOG INPUT MODULE Instrukcja Użytkownika Pobierz pdf (Strona 28)

3–2 Module Programming

>,53-+=387 E  /,;>+;B 

The PLC-2 program example regulates when each block transfer will

be initiated to eliminate problems caused by limited regulation of

bidirectional block transfers. Both storage bits are needed, as shown

in the example, to accomplish this task in all PLC-2 systems, local or

remote, with long or short program scans. Therefore, the program as

shown is the minimum required. Note that PLC-2 processors that do

not have the block transfer instruction must use the GET-GET block

transfer format which is outlined in Appendix E.

Figure 3.1

PLCĆ2 Family Sample Program Structure

58-4#;+7<0/;!/+.

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)*(8>-+7;/95+-/=2/9><2,>==87@3=2+=36/;D.87/,3==8373=3+=/=2/,58-4=;+7<0/;

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3=

87/3= ><2,>==87)*

58-4#;+7<0/;&;3=/



87/3=

"=8;+1/

58-4#;+7<0/;&;3=/

3=

87/3=

"=8;+1/

3=

87/3=

8@/;>9

58-4#;+7<0/;!/+.

3=

3=

8@/;>9

3=

"=8;+1/

#!87/

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"=8;+1/

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8@/;>9

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"=8;+1/

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"=8;+1/

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@;3=/87+=36/.,+<3<(8>-+7+5<8></+7B<=8;+1/,3=376/68;B

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"=8;+1/

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Rung 1

58-4 =;+7<0/; ;/+. ,>00/; =2/

035/E=8E035/ 68?/ 37<=;>-=387 285.< =2/

,58-4 =;+7<0/; ;/+. #! .+=+ 035/ 

>7=35 =2/ 9;8-/<<8; -2/-4< =2/ .+=+

37=/1;3=B 0 =2/ .+=+ @+< <>--/<<0>55B

=;+7<0/;;/. =2/ 9;8-/<<8; /7/;13C/<

=2/ #! .87/ ,3= 373=3+=371 + .+=+

=;+7<0/; =8 =2/ ,>00/; 035/ ! 08; ></ 37

=2/ 9;81;+6

0 =2/ .+=+ 3< -8;;>9=/. .>;371 =2/ #!

89/;+=387 =2/ #! .87/ ,3= 3< 78=

/7/;13C/. +7. .+=+ 3< 78= =;+7<0/;;/. =8

=2/ ,>00/; 035/ 7 =23< -+</ =2/ .+=+ 37

=2/ #! 035/ @355 ,/ 8?/;@;3==/7 ,B .+=+

0;86 =2/ 7/A= #!

Rungs 2 and 3

#2/</ ;>71< 9;8?3./ 08; + ></;E373=3+=/.

,58-4 =;+7<0/; @;3=/ #& +0=/; =2/

68.>5/ 3< 373=3+53C/. += 98@/;E>9

;/<<371 =2/ 9><2,>==87 58-4< 8>= #!

89/;+=387 +7. 373=3+=/< + #& =2+=

;/-87031>;/< =2/ 68.>5/ 58-4 =;+7<0/;

@;3=/< @355 -87=37>/ 08; +< 5871 +< =2/

9><2,>==87 ;/6+37< -58</.

Rungs 4 and 5

#2/</ ;>71< 9;8?3./ + D;/+.E@;3=/E;/+.

</:>/7-/ =8 =2/ 68.>5/ += 98@/;E>9

#2/B +5<8 6+4/ <>;/ =2+= 875B 87/

,58-4 =;+7<0/; ;/+. 8; @;3=/ 3< /7+,5/.

.>;371 + 9+;=3->5+; 9;81;+6 <-+7

Rungs 6 and 7

#2/</ ;>71< +;/ =2/ -87.3=387371 ,58-4

=;+7<0/; ;>71< 7-5>./ +55 =2/ 379>=

-87.3=387371 <28@7 37 =2/ /A+695/

9;81;+6

#!

#&

PLCĆ2 Programming

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