檢查I/O，俗稱“打點”。檢查I/O的方法很多，但是一定要根據(jù)說明書提供的地址依次進行檢查，在絕對安全的情況下來檢查。
在檢查輸入點時，一般輸入信號無非是各種傳感器，如電容、電感、光電、壓阻、超聲波、磁感式和行程開關(guān)等傳感器。檢查這些元件比較簡單，根據(jù)元件說明將工件放在工位上，或是移動執(zhí)行機構(gòu)檢查傳感器是否有信號即可。當(dāng)然，不同的設(shè)備檢測的方式可能不同，這要看具體情況而定了。
但是在檢查輸出信號時就要格外小心了。如果是電驅(qū)動產(chǎn)品，必須在安全情況下，尤其是保證設(shè)備不會發(fā)生撞擊前提下，讓執(zhí)行機構(gòu)的驅(qū)動器得電，檢查執(zhí)行機構(gòu)是否能夠運動。如果是液壓或氣動執(zhí)行機構(gòu)，同樣在安全情況下手動使換向閥得電，從而控制執(zhí)行機構(gòu)。在檢查輸出信號時，不論執(zhí)行機構(gòu)的驅(qū)動方式是什么，一定要根據(jù)元件說明書，首先要保證設(shè)備和人身安全，要注意并不是所有設(shè)備的執(zhí)行機構(gòu)都可以通電測試的，所以有時個別的輸出信號可能無法手動測試。無論是輸入還是輸出裝置，當(dāng)傳感器有信號或執(zhí)行機構(gòu)的驅(qū)動裝置得電后，必須同時檢查PLC上的I/O模塊指示燈是否也點亮。很多設(shè)備中，輸入輸出信號是通過接線端子與PLC連接，有時接線端子的指示燈有信號，但不能保證由于連接導(dǎo)線內(nèi)部斷路，而PLC上相應(yīng)的地址沒有信號接通。這一點要特別注意。
在測量輸入輸出信號后，要同時將測量的地址記錄下來，保證信號地址和說明書中一致。如有不同，再次測量設(shè)備地址，多次測量仍然不一致，先聯(lián)系設(shè)備廠家，因為此時不能保證廠家提供的地址沒有錯誤。

Reliance Servo Motor 1326AB-B720E-21?K7 Used

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Oilgear Servo Valve VCS4-R03-005-N-?210-V-130 Rebuilt

Toshiba VT130G2+4035 Inverter Drive~Rebuilt

CEI Control Enterprises Inc/SLI VS8640VBE31B Rebuilt

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Parker Amplifier Card EZ00595 Rebuilt- 6 Mo Warranty

Hagglunds Denison Servo Valve D1P013343101101?1 ~Rebuilt

New Rexroth VT5006 Amplifier Card VT-5006 NIB Warranty

Parker Servo Valve Model 234912 Rebuilt

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OilGear L404563-821 Servo Amplifier Module New

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Fincor DC Motor Control 2200P Regenerative +6M Warranty

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Dynamics Research Precision Slide LH1B-0012-BN-R2?5

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NEW! Rexroth Servo Amplifier Card VT3014S38 w/6M Warr.

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PMI 0088007001 Servo Amplifier~Rebui?lt
Type: SSA-40-07-20

Fanuc A06B-0533-B551 Servo Motor w/Warranty

New HCS DAC-44-01-270-X?LT Amp Card NIB H-C-S

Danfoss 3002 Variable Speed Drive~175H1729~?Rebuilt

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Bosch Amplifier Card 0 811 405 030 Rebuilt

Moog Controller Model 155-002

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Bosch Amplifier Card 0 811 405 097 -PV60- Rebuilt

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Whedco Servo Motor MTR-35005602 Used

Moog 303-030A Servo Motor 11,000 RPM Used – Warranty

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Rexroth Amplifier Card Model VT-2000K43/2 Rebuilt

NEW Bosch Proportional Valve 9810-231-481 13 Mo Warr.

Sanyo Denki Servo Motor Model 65BM040HBRSA

Moog Servo Motor Model G403-001 Used

Moog AC6717 Slip Ring Turck Encoder T8.5803.ZPTY.20?48

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Fanuc Spindle Motor A06B-1002-B100 Used

Siemens Servo Motor 1FT5076-0AC01-0?-Z Used

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Allen Bradley Servo Motor 1326AB-B2E-11 Used

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Gould Servo Motor M33Y-YMRY-Y00Y-?1T Used

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Sanyo Denki 27BM140SBTV0 Servo Motor

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Allen-Bradley ServoMtr 1326AB-A2E-11 + Bayside gearbox

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Moog Servo Motor Model G413-200 Used

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Okuma Servo Motor Model BL-MC50J-30T Used

Nachi-Fujikoshi Servo Motor MFA450FSCBS Used

NEW! Dowty Torque Motor NIB! ~ w/6 Month Warranty

Moog Torque Motor for 62 Series Valve~Rebuilt~N?R!

NEW! Omron Servo Motor R88M-M20020-B w/6 Month Warranty

Heidenhain Control # EXE600-5.V ~ 6 Month Warranty~Used

New Mitsubishi MR-J20MA-UL Servo Amplifier NIB

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Vickers Servo Amplifier Card EEA-PAM-535-A-2?2 Rebuilt

New Yuken AME-D2-H1-100-1?2 Power Amplifier NOS

OilGear L404563-506 Servo Amp Card New

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Parker VRD350 Servo Amplifier Card~Rebuilt~6M Warranty

Cincinnati Milacron Servo Drive #37200077A #12300534

專業(yè)銷售進口DCS? PLC系統(tǒng)備件模塊