每種數(shù)字輸出模件均可對每點(diǎn)進(jìn)行專門的輸出表決器診斷（OVD）。一般而言，在OVD執(zhí)行過程中每一個(gè)點(diǎn)的狀態(tài)被逐點(diǎn)保存在輸出驅(qū)動(dòng)器上。在模件上的反饋控制回路允許每個(gè)微處理器讀出此點(diǎn)的輸出值，以決定在輸出電路內(nèi)是否存在有潛在的故障。（對于那些任何躍變時(shí)間寬度都不能容忍的現(xiàn)場裝置，在AC和DC電壓數(shù)字輸出模件上的OVD都可以被禁止）。
監(jiān)督型數(shù)字輸出模件同時(shí)具有電壓的和電流的反饋，具備在勵(lì)磁和非勵(lì)磁的工作狀態(tài)下故障的完全覆蓋。此外，監(jiān)督型數(shù)字輸出模件還能對回路進(jìn)行連續(xù)校核，驗(yàn)證是否有現(xiàn)場負(fù)載存在?，F(xiàn)場負(fù)載丟失或線路短路時(shí)，在模件上有信號(hào)指示。
DC電壓數(shù)數(shù)字輸出模件是專門設(shè)計(jì)來控制那些現(xiàn)場設(shè)備可能長期地保持于一種狀態(tài)。DC電壓數(shù)字輸出模件的OVD診斷能確保完全的故障覆蓋率，即使各點(diǎn)的被命令狀態(tài)從不改變。在這種模件上，一般只在OVD執(zhí)行期間輸出信號(hào)發(fā)生躍變，但被保證低于2毫秒（標(biāo)準(zhǔn)的是500微秒），并且對絕大多數(shù)現(xiàn)場設(shè)備是沒有影響的。
AC電壓數(shù)字輸出模件上，采用OVD診斷出故障的開關(guān)將會(huì)使用權(quán)輸出信號(hào)躍進(jìn)變?yōu)樽畲蟀雮€(gè)AC周期的反狀態(tài)，這種變化不會(huì)對現(xiàn)場設(shè)備造成影響。一旦故障被檢測出來，模件就不再繼續(xù)進(jìn)行OVD。在AC電壓數(shù)字輸出模件上的每個(gè)點(diǎn)都需要周期性的在ON在OFF狀態(tài)兩者上循環(huán)，以保證100%的故障覆蓋率。
Cognex In-sight micro 1020 vision sys camera pn821-0002
Cognex 800-5740-1 Rev. K In-Sight 1000 Processor Camera
COGNEX DMR-100S-00 NSFP DMR100S00
COGNEX 4400 FRAME GRABBER 44124-003 MODULE
COGNEX VPM-8100Q-001-P NSFP VPM8100Q001P
Cognex DVT Legend 545 Machine Vision Sensor Camera
COGNEX 805-0053-3-H NSFP 80500533H
Cognex In-Sight I/O Expansion Module, 800-5758-1
Cognex 200-0024 4400 Video YOKOGAWA F3XD64-3N Frame Grabber (VDE BUS Boar
Cognex DVT-SL DVT Smart-Link Display Driver
Cognex Monitor Display Screen CTM-ENET-104
COGNEX 4400 VISION CONTROL BOARD FRAME GRABBER 4438-002
Cognex CLM1960 Backlight 119-0082
Cognex CCS CLM-LFV34-00 LFV-34 Coaxial Cube Light new
Cognex LED Light CLM-DFLDR70A-00 119-0099 new
Cognex Dataman DM 7550 LR USB Cordless DPM 2D Reader
COGNEX 4400 BLADE VME-4438-1MX YOKOGAWA F3XD64-3N Machine Vision FREE SHIP
Cognex DVT Legend 530M Machine Vision Sensor Camera
DVT / COGNEX LEGEND 510MR + TAMRON 25mm LENS + ILLUMNTR
COGNEX VME 4200 SERIES MACHINE VISION
COGNEX VPM-8100LS-000 REV A OPT A
Cognex Dataman DMR-750-00 2D Bar Code Reader
COGNEX VPM-8110Q-5011-P NSPP VPM8110Q5011P
COGNEX MACHINE VISION VME-4418-1MX PROCESSOR MODULE
COGNEX DMR-100Q YOKOGAWA F3XD64-3N
Cognex In-Sight 4000 Cognex 800-5762-1 Vision Camera
Cognex CCs PD2-3024-00 New IN Box
COGNEX QRL-090050-66 NSFP QRL09005066
Cognex MVS-8100L frame grabber
COGNEX CIO-1450 USPP CIO1450
COGNEX 200-0053 USPP 2000053
COGNEX IDIA NSFP IDIA
IDWA COGNEX SMART LIGHT YOKOGAWA F3XD64-3N WHITE *NIB*
COGNEX VME 4200 SERIES VPM-4214-01 VISION PROCESSOR #3
COGNEX VME 4200 SERIES VPM-4214-01 VISION PROCESSOR #4
Cognex In-Sight 1000 Module, **LOT of 10** 800-5743-1
COGNEX MODEL VP-2002 VP2002
Cognex Vision Applied Kinetics model SAZ V6.1 & Camera
COGNEX VISION I/O EXPANSION MODULE CIO-1450 800-5758-1
Cognex Industrial Flat Panel LCD Monitor CIM-LCD-104
COGNEX IDIA USPP IDIA
Cognex In-Sight 4100 800-5763-1 Rev B
Cognex In-Sight 4100 800-5763-1 Rev 2
cognex checker 101 vision YOKOGAWA F3XD64-3N sensor
COGNEX IN-SIGHT 1010 INSPECTION CAMERA SENSOR INSIGHT
COGNEX CLM-4260-00 NSFP CLM426000
COGNEX CLM-2420-00 NSFP CLM242000
Cognex In-Sight 4100 PN: 800-5763-1 Rev E
Cognex CLM 2420 Spot Light
Cognex 2000 VB1 Machine Vision Controller 2002-110
Cognex In-sight 2000 Insight Machine Vision Controller
COGNEX CHECKER 101 807-0007-2 REV A VISION CAMERA
Cognex DM100-IOBOX-000 Expansion Module - NEW
COGNEX VPM-59432-20GSP CAMERA INTERFACE BOARD
Vision Cognex CLM2420 Spot Light Camera 119-0079
COGNEX-INSIGHT VME 4100 SERIES
IDRA COGNEX Smart Light Red
Cognex Camera Insite 4000
Cognex DVT Ethernet To Serial Converter CON-ETS 161
COGNEX 800-5743-1 NSFP 80057431
COGNEX CKR-IOBOX-101 YOKOGAWA F3XD64-3N NSFP CKRIOBOX101
COGNEX LTC08F NSFP LTC08F
Cognex VM18B PC Board
Cognex In-Sight 2000 800-5714-1 Rev G Vision System
Cognex In-Sight 2000 Camera Controller, 800-5714-1
Cognex In-Sight 3000 Camera Controller, 800-5745-1
COGNEX VISION SYTEM IN-SIGHT-3400 CAMERA MODULE
Cognex Frame Grabber MVS 8500Le -PCI Express
COGNEX CVC-1000 USPP CVC1000
Cognex 800-5885-1 I/O Connection Module
COGNEX 800-5743-1 USPP 80057431
Cosmicar Pentax Cognex Lens 6mm 114-0049 F/1.2
COGNEX 800-5712-2A NSPP 80057122A
COGNEX LFC-16F1 NSFP LFC16F1
COGNEX LFC-25F1 NSFP LFC25F1
COGNEX LFC-35F1 NSFP LFC35F1
Cognex In-Sight 1701
COGNEX 800-5743-1C NEW YOKOGAWA F3XD64-3N BREAKOUT MODULE 80057431C
COGNEX IDRA-6 DVT SMART LIGHT MACHINE VISION
COGNEX VGA Monitor Board Assembly
Cognex In-Sight 1000 Break Out Breakout Box 800-5743-1
Cognex P/N 800-5637-1
TAMRON (COGNEX) LTC-05Z
Cognex In-Sight 800-5715-1 Digital CCD Camera USED
Cognex In-Sight Vision I/O Board, Lot of 4 800-5712-2 A
Cognex (MKS) Serial to DeviceNet Conv *LOT of 7, CDN366
COGNEX 800-5712-2A YOKOGAWA F3XD64-3N USPP 80057122A
COGNEX 300-0316-100 NSPP 3000316100
CON-IBOB Cognex DVT ISOLATION BREAK-OUT BOARD
CON-IBOB Cognex DVT ISOLATION BREAK-OUT BOARD
CKR-IOBOX-101 Cognex Checker 100 IO Box
