主令開關(guān)是機(jī)械設(shè)備中重要的控制元件之一，也被稱為主操作開關(guān)或總開關(guān)。它主要用于控制機(jī)器的啟動(dòng)、停止和故障診斷等功能，以確保設(shè)備的安全性和可靠性。
從機(jī)械結(jié)構(gòu)上來看，主令開關(guān)通常是一種大型的手柄，在緊急情況下可以快速切斷電源或油路，以保證機(jī)械操作的安全性。因此，主令開關(guān)的名稱中“主”和“令”的含義是非常重要的，它代表著這個(gè)開關(guān)對(duì)整個(gè)機(jī)械系統(tǒng)的掌控能力和指揮作用，說明了它在機(jī)械設(shè)備中的重要性和不可替代的地位。
主令開關(guān)的命名來源于計(jì)算機(jī)體系中的總線結(jié)構(gòu)。
1. "主令"指的是CPU發(fā)送的指令，意義重要，因此必須得以高速穩(wěn)定的傳輸。
主令開關(guān)可以連接到計(jì)算機(jī)的總線中，在保證消息高速傳輸和準(zhǔn)確性的基礎(chǔ)上，將主令分發(fā)到不同的設(shè)備中，實(shí)現(xiàn)計(jì)算機(jī)的整體操作。
2. 每一臺(tái)計(jì)算機(jī)硬件架構(gòu)的總線結(jié)構(gòu)是不同的，故不同計(jì)算機(jī)廠商的主令開關(guān)也存在差異。
一般來說，主令開關(guān)是實(shí)現(xiàn)計(jì)算機(jī)指令傳輸?shù)年P(guān)鍵設(shè)備，而其名稱來源于總線結(jié)構(gòu)中信號(hào)分配的特殊性質(zhì)。
GESSMANNVV51 VV5/CR2804 0114599/13250VAC/D 主令控制器
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GESSMANNVV61 KNK/01 6A 250VAC 1005arrangement like 0306550/2 KNK
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GESSMANNVV6 F.N0.011 3524/1 Q95 6A凸輪控制器
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GESSMANNVV5D-74211 0502033/30-2
GESSMANN4F 934 741 CODE 1
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GESSMANNOEC2-3-2-2 D-742110517251/11 絞車操作手柄
GESSMANNUGE1-30-8凸輪限位開關(guān)（檔板）
GESSMANNV62D F,NO:9911638/2a-16A 250V AC/DC
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GESSMANN3SJ3-002-2AY15-Z-Z-A08+002絞車操作手柄
GESSMANNW.Gessman-GMBH,250V AC/DC,F.No-0701208/30-09,type-V61
GESSMANND-74211 LEINGGARTEN 6AF.NO. 0507634/10-27 250VAC/VDC
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GESSMANND-74211 Kingarten16A 250VF.NO 0614282/10-01 起升手柄
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GESSMANNOEC4-2-1-2NO:050 8097/10V 04
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GESSMANN3SX4175底座
GESSMANND-74211 F.NO:0707986
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GESSMANNGESS:N6-00RP-E DG0000300154/I&S SO
GESSMANNSACH-NR EP/05-57 0503 WNR
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GESSMANNU62PD-02ZC+02ZC-X,060 9173/60A-126KNK/01(U61)
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GESSMANNVV61-06C含閉合表S.NO。2004 426A 250VAC/DC T130 Nr.4控制器
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GESSMANNVⅡ F,NO:04142631206A 250V
GESSMANBVV81T-03ZP MSP21-0 T301 2*5kohm 帶罩殼
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GESSMANNVV61LM-02EC-A050C151
GESSMANND-74211 U64 1 061 4043-48 6A250VAC/DC 操作手柄
GESSMANNV64-L-03Z(M)P-03Z(M)P 天車手柄Nr:0414892/30-27
GESSMANNVV5D-74211 S/N：1742/2-1
GESSMANNKNK/01 6A 250V VV 6000000-001主令手柄
GESSMANNVV6 D-74211 LEINGARTENF.NO.060 0233/20-08
GESSMANN主令手柄V8EB/37-22SER.NO:0314844 V-15
GESSMANNV8/MEB/37-18
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GESSMANNSACH-NR EP/05-35 1204 WNR
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GESSMANNV5 MS0133 0606 F.No:0607463/20-1
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GESSMANND-74211 F.NO.0103524/1-01V8/B3 EP/189-14另配5根連接線
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GESSMANNV64P-03Z-04ZMS24-0.6A/250V
GESSMANNEP/189-12622301
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GESSMANNW5/CR2804 FNO.0114599/1310A 250V AC/BC 主令控制器
GESSMANNV62-03Z002Z V62002Z(MS24+02Z)/W SPRING
GESSMANNVIOTL-01ZP-O1ZP-X
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