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±???ê?1?óú×??ˉ???????μí3μ?éè??￡?×??ˉ???μí3?÷òaóé?é±à3ì?????÷￡¨PLC￡??￠?Dó|?÷?t?￠?y?ˉ×°??oí′??ˉ×°??×é3é?￡?÷òa1¤×÷?-àíê??Dó|?÷?t???ì2aμ?μ?è?ì??ò??ì?D?o?′??íμ?PLC￡?PLC?ù×?o?ê?μ?μ?×??ˉ??×′ì?D?o?×÷3??D??￡???oó·￠3?????D?o?￡?ê1?y?ˉ×°????DD￡??úí¨1y′??ˉ×°??′??ˉ??μ??ˉ×÷?￡
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μú?t???ééü×??ˉ??μ?éè??òa?ó
μúèy???ééü×??ˉ??μ?ó2?téè??￡?PLC??Dí￡??y?ˉ×°????Dí￡??Dó|?÷?tμ???Dí￡?
μú?????ééüá??μí3èí?téè??￡?PLCìYD?í?éè??￡?èí?téè??
μú?????éé@@ìDòμ÷ê? ￡?ó2?t?ó??
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?aòa 1
???? 2
μúò??? ?°?? 3
μú?t?? 1ú?úía×??ˉ??·￠?1 4
2.1 1ú?úía×??ˉ??·￠?1??×′ 4
2.2 ±???ìa?D??μ??úèY 5
2.3 ±???ìa?D??μ???μ?oíòaò? 5
μúèy?? ×??ˉ???????μí3×üì?·?°?éè?? 7
3.1 ?ú×??ˉ??μ?1|?üDè?ó·??? 7
3.2 ×??ˉ??μ?????òa?ó 7
3.3 ×??ˉ???????μí3113é 7
3.3.1 PLC??ê? 7
3.3.2 ??ì?113é 10
3.4 ×??ˉ??μ??úDμ′??ú11éè?? 11
μú???? ×??ˉ???????μí3μ?ó2?téè?? 12
4.1 PLCμ????? 12
4.2 ?y?ˉ×°??μ???Dí 14
4.3 ?Dó|?÷?tμ???Dí 14
4.4.1 ?±á÷μ??ˉ?úμ?μ÷?ù 15
4.4.2 ?±á÷μ??ˉ?úμ?ó?ê? 17
4.5 ′??ˉ×°?? 17
4.6 ?T???a1? 18
4.7 ×??ˉ???????μí3I/0μ??··???±í 18
4.8 ×??ˉ???????μí3μ??-àíí? 19
4.8.1 ?÷μ??·?°1?μ????· 19
4.8.2 ía?§?ó?? 20
μú???? ×??ˉ???????μí3èí?tμ?éè?? 21
5.1 1¤×÷1y3ìμ?·??? 21
5.2 ìYD?í?3ìDò 21
μúáù?? 3ìDòμ÷ê? 24
6.1 ó2?t???·á??ó 24
6.2 áa?úμ÷ê? 24
?áê?ó? 25
2??????× 26
??D? 27
????1 28
????2 29
????3 30