每种数字输出模件均可对每点进行专门的输出表决器诊断（OVD）。一般而言，在OVD执行过程中每一个点的状态被逐点保存在输出驱动器上。在模件上的反馈控制回路允许每个微处理器读出此点的输出值，以决定在输出电路内是否存在有潜在的故障。（对于那些任何跃变时间宽度都不能容忍的现场装置，在AC和DC电压数字输出模件上的OVD都可以被禁止）。
监督型数字输出模件同时具有电压的和电流的反馈，具备在励磁和非励磁的工作状态下故障的完全覆盖。此外，监督型数字输出模件还能对回路进行连续校核，验证是否有现场负载存在。现场负载丢失或线路短路时，在模件上有信号指示。
DC电压数数字输出模件是专门设计来控制那些现场设备可能长期地保持于一种状态。DC电压数字输出模件的OVD诊断能确保完全的故障覆盖率，即使各点的被命令状态从不改变。在这种模件上，一般只在OVD执行期间输出信号发生跃变，但被保证低于2毫秒（标准的是500微秒），并且对绝大多数现场设备是没有影响的。
AC电压数字输出模件上，采用OVD诊断出故障的开关将会使用权输出信号跃进变为最大半个AC周期的反状态，这种变化不会对现场设备造成影响。一旦故障被检测出来，模件就不再继续进行OVD。在AC电压数字输出模件上的每个点都需要周期性的在ON在OFF状态两者上循环，以保证100%的故障覆盖率。
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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
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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
