Central CPUs, fail-safe CPUs, racks, and distributed-I/O control roles
Category hub / PLC / CPU
PLC and CPU references - identify, recover, replace
A PLC or CPU reference is only useful when it stays connected to its rack, firmware, safety role, and machine context. This hub starts with the reference itself, then records what is known before a source, repair, exchange, or replacement decision is made.
Catalogue references
537 catalogue references
537 catalogue references.
| Rank | Reference | Manufacturer | Type | System role | Evidence | Status | Action |
|---|---|---|---|---|---|---|---|
| 51 | 3VL3725-1AA46-0AA0 | Not stated | Not stated | The VL molded-case circuit breaker protects and switches a three-phase feeder against documented overload and short-circuit conditions. | Individual research | PUBLISHED | Open reference |
| 52 | 3VL5750-1DC36 | Not stated | Not stated | The VL630N molded-case circuit breaker protects and switches a three-phase feeder against documented overload and short-circuit conditions. | Individual research | PUBLISHED | Open reference |
| 53 | 3VL5763-1DC36-0AA0 | Not stated | Not stated | The VL630N molded-case circuit breaker protects and switches a three-phase feeder against documented overload and short-circuit conditions. | Individual research | PUBLISHED | Open reference |
| 54 | 3VL9800-3MQ00 | Not stated | Not stated | The VL load disconnector isolates and switches a low-voltage feeder between an upstream source and a protected circuit. | Individual research | PUBLISHED | Open reference |
| 55 | 3VT9200-3MN00 | Not stated | Not stated | The SENTRON motorized operating mechanism drives a compatible circuit-breaker mechanism from its control supply. | Individual research | PUBLISHED | Open reference |
| 56 | 3WL1110-3EB37-5FA4-ZR10 | Not stated | Not stated | The 3WL air circuit breaker protects and switches a high-current incoming or feeder circuit. | Individual research | PUBLISHED | Open reference |
| 57 | 3WL1116-3FB37-5FA4-Z | Not stated | Not stated | The 3WL air circuit breaker protects and switches a high-current incoming or feeder circuit. | Individual research | PUBLISHED | Open reference |
| 58 | 3WL1350-4FB36-5FR4 | Not stated | Not stated | The SENTRON air circuit breaker protects and switches a high-current plant or motor feeder. | Individual research | PUBLISHED | Open reference |
| 59 | 440R-H23176 | Not stated | Not stated | The MSR210 safety relay monitors dual-channel safety inputs and switches safety outputs for a machine control circuit. | Individual research | PUBLISHED | Open reference |
| 60 | 499-NOH-00510 | Not stated | Not stated | The Schneider Automation hub routes Ethernet frames between copper and fiber network segments. | Individual research | PUBLISHED | Open reference |
| 61 | 4AM3242-5CT10-0FA0 | Not stated | Not stated | The SITAS control transformer converts a 440 V control supply to an isolated 230 V single-phase control supply. | Individual research | PUBLISHED | Open reference |
| 62 | 4AM3442-8DD40-0FA0 | Not stated | Not stated | The SITAS control transformer converts a selectable primary supply to an isolated single-phase control supply. | Individual research | PUBLISHED | Open reference |
| 63 | 505-6660B | Not stated | Not stated | The power supply supplies rack power for a Series 505 PLC chassis. | Individual research | PUBLISHED | Open reference |
| 64 | 505-7012A | Not stated | Not stated | The analog I/O module routes analog field signals between a TI 505 PLC and connected devices. | Individual research | PUBLISHED | Open reference |
| 65 | 5069-L320ER | Not stated | Not stated | The controller executes CompactLogix control logic for connected I/O and EtherNet/IP devices. | Individual research | PUBLISHED | Open reference |
| 66 | 5069-L340ER | Not stated | Not stated | The controller executes CompactLogix control logic for connected I/O and EtherNet/IP devices. | Individual research | PUBLISHED | Open reference |
| 67 | 6AG1123-2GB03-2AX0 | Not stated | Not stated | The HMI displays machine information and provides the operator-facing control surface in the PROFINET automation system. | Individual research | PUBLISHED | Open reference |
| 68 | 6AG1132-4HB01-2AB0 | Not stated | Not stated | The module switches relay-controlled loads from a distributed I/O station. | Individual research | PUBLISHED | Open reference |
| 69 | 6AG1138-4FA04-2AB0 | Not stated | Not stated | The module receives safety-related digital input signals from field devices in a distributed safety I/O station. | Individual research | PUBLISHED | Open reference |
| 70 | 6AG1138-4FB04-2AB0 | Not stated | Not stated | The module switches safety-related output loads from a distributed safety I/O station. | Individual research | PUBLISHED | Open reference |
| 71 | 6AG1243-1BX30-2AX0 | Not stated | Not stated | The communications processor routes an additional Ethernet connection from a SIMATIC S7-1200 to control centers using documented telecontrol protocols. | Individual research | PUBLISHED | Open reference |
| 72 | 6AG1332-5HB01-2AB0 | Not stated | Not stated | The module converts S7-300 output commands into isolated analog voltage or current signals for field equipment. | Individual research | PUBLISHED | Open reference |
| 73 | 6AG1503-2CA01-2AA0 | Not stated | Not stated | The optical link module routes PROFIBUS communication across optical and electrical network segments. | Individual research | PUBLISHED | Open reference |
| 74 | 6AG1521-1BH00-7AB0 | Not stated | Not stated | The module receives 24 V DC digital field signals for processing by an S7-1500 control system. | Individual research | PUBLISHED | Open reference |
| 75 | 6AG1521-1BL00-7AB0 | Not stated | Not stated | The module receives 24 V DC digital field signals for processing by an S7-1500 control system. | Individual research | PUBLISHED | Open reference |
| 76 | 6AG1522-1BH01-7AB0 | Not stated | Not stated | The module switches 24 V DC digital actuator signals from an S7-1500 control system. | Individual research | PUBLISHED | Open reference |
| 77 | 6AG1647-0AD11-2AX0 | Not stated | Not stated | The HMI displays machine information and provides the operator-facing control surface for the connected automation system. | Individual research | PUBLISHED | Open reference |
| 78 | 6AG1972-0DA00-2AA0 | Not stated | Not stated | Supplies the termination point for the RS485 PROFIBUS segment. | Individual research | PUBLISHED | Open reference |
| 79 | 6AU1400-1PA22-0AA0 | Not stated | Not stated | The CF card supplies the listed removable storage medium for the SIMOTION D410-2 motion controller. | Individual research | PUBLISHED | Open reference |
| 80 | 6AU1400-2KA00-0CA0 | Not stated | Not stated | The CF card supplies the listed removable storage medium for the SIMOTION D4x5 motion controller. | Individual research | PUBLISHED | Open reference |
| 81 | 6AU1400-2PA00-0AA0 | Not stated | Not stated | The CF card supplies the listed removable storage medium for the SIMOTION D4xx motion controller. | Individual research | PUBLISHED | Open reference |
| 82 | 6AU1400-2PA02-0AA0 | Not stated | Not stated | Stores the documented SIMOTION kernel and SINAMICS drive software on a D4xx CompactFlash card. | Individual research | PUBLISHED | Open reference |
| 83 | 6AU1400-2PA22-0AA0 | Not stated | Not stated | Controls firmware storage by carrying the D4x5-2 kernel, SINAMICS firmware and controller data on the SIMOTION CompactFlash card. | Individual research | PUBLISHED | Open reference |
| 84 | 6AU1425-2AD00-0AA0 | Not stated | Not stated | Executes programmable motion-control tasks and exchanges machine signals with connected drives and field devices. | Individual research | PUBLISHED | Open reference |
| 85 | 6AU1435-2AA00-0AA0 | Not stated | Not stated | Executes programmable motion control and coordinates connected drives through the SIMOTION D435-2 controller interfaces. | Individual research | PUBLISHED | Open reference |
| 86 | 6DD1607-0EA2 | Not stated | Not stated | Routes SIMOLINK communication through two integrated SLB interfaces for an FM458 application module. | Individual research | PUBLISHED | Open reference |
| 87 | 6DD1660-0AH1 | Not stated | Not stated | Routes communication for compatible SIMOVERT P 6SE12 and SIMOREG K 6RA24 systems. | Individual research | PUBLISHED | Open reference |
| 88 | 6DD1660-0BF0 | Not stated | Not stated | Stores and buffers global data in a SIMATIC TDC distributed-control system using 2 MB SRAM. | Individual research | PUBLISHED | Open reference |
| 89 | 6DD1660-0BH0 | Not stated | Not stated | Routes GDM communication through one 640 Mbps fiber-optic interface. | Individual research | PUBLISHED | Open reference |
| 90 | 6DD1661-0AB1 | Not stated | Not stated | Routes SINEC H1 network communication and exchanges data with SIMADYN D CPU modules through dual-port RAM. | Individual research | PUBLISHED | Open reference |
| 91 | 6DD1661-0AE1 | Not stated | Not stated | Routes TCP/IP or UDP communication through an RJ45 Industrial Ethernet interface and the TDC L/C bus. | Individual research | PUBLISHED | Open reference |
| 92 | 6DD1662-0AB0 | Not stated | Not stated | Routes serial communication for supported SS4, SS5 and SS52 modules using DUST, USS or PROFIBUS protocols. | Individual research | PUBLISHED | Open reference |
| 93 | 6DD1662-0AC0 | Not stated | Not stated | Routes CAN, DeviceNet or PROFIBUS communication for supported communication modules through two module slots and the L bus. | Individual research | PUBLISHED | Open reference |
| 94 | 6DD1681-0BF1 | Not stated | Not stated | Protects the SIMADYN D interface layer with a passive surge-suppression circuit. | Individual research | PUBLISHED | Open reference |
| 95 | 6DD1681-0EB3 | Not stated | Not stated | Isolates and converts eight binary 24 or 48 V DC signals to SIMADYN D, SIMATIC TDC or FM458 signal levels. | Individual research | PUBLISHED | Open reference |
| 96 | 6DD1682-0AJ1 | Not stated | Not stated | Protects an unused slot opening by covering one blank position in a SIMADYN D digital-control SR6 subrack. | Individual research | PUBLISHED | Open reference |
| 97 | 6DD1682-0BC4 | Not stated | Not stated | Supplies and hosts SIMADYN D modules through a 12-slot subrack with an integrated 115 or 230 V AC power supply and L/C buses. | Individual research | PUBLISHED | Open reference |
| 98 | 6DD1682-0CF0 | Not stated | Not stated | Supplies and houses SIMADYN D PT10 and CS51 PC boards in a fanless 115 or 230 V switchable technology box. | Individual research | PUBLISHED | Open reference |
| 99 | 6DD1682-0CG0 | Not stated | Not stated | Supplies and hosts up to two T400 boards or one T400 board with a MASTERDRIVES communication board for drive control. | Individual research | PUBLISHED | Open reference |
| 100 | 6DD1682-0CH2 | Not stated | Not stated | Supplies and hosts SIMATIC TDC modules in a 21-slot rack boundary with an integrated fan for GDM use. | Individual research | PUBLISHED | Open reference |
What this category covers
Reference identity, successor checks, firmware and network context
Evidence needed before repair, exchange, or a compatible replacement
Integration status: 16 catalogue identities integrated; identity pages are indexable and optional evidence is omitted when unavailable
Choose a recovery path
Editorial queue
9 draft / 1 published
Published guides passed the shared evidence evaluator. Draft entries remain noindex until their body, sources, review window, provenance, and category path pass the same gates.
| Intent | Question | Summary | Source notes | Integration | Preview |
|---|---|---|---|---|---|
| How to identify a PLC CPU from its nameplate | Which nameplate fields prove a PLC CPU identity? | A practical intake sequence for the reference, revision, family, and visible condition. | docs/data/v1-guide-publication-review.md; Siemens SIMATIC S7-1200 system manual V4.5: https://cache.industry.siemens.com/dl/files/241/109797241/att_1066673/v1/s71200_system_manual_en-US_en-US.pdf; Siemens 6ES7214-1AG40-0XB0 product data: https://mall.industry.siemens.com/goos/catalog/Pages/mmpdata.ashx?MLFB1=6ES7214-1AG40-0XB0&lang=en; Siemens 6ES7214-1BG40-0XB0 product data: https://mall.industry.siemens.com/goos/catalog/Pages/mmpdata.ashx?MLFB1=6ES7214-1BG40-0XB0&lang=en | PUBLISHED - INDEXABLE | Open published guide |
| PLC CPU or I/O module: what is the difference? | How can a technician tell the controller from an I/O module? | Explain the control role and the evidence that separates a CPU from its connected modules. | docs/data/data-model.md; Manufacturer documentation required before publication | DRAFT - NOT INDEXABLE | Open draft |
| What to record before recovering a fail-safe PLC CPU | What safety and configuration evidence is needed before recovery? | Define a safe intake boundary for a fail-safe controller without promising compatibility. | docs/product/comparison-and-recovery-model.md; Qualified technical evidence required | DRAFT - NOT INDEXABLE | Open draft |
| How to check a PLC CPU successor reference | What must be compared before accepting a successor? | A comparison checklist for hardware, firmware, safety, wiring, and project constraints. | docs/data/data-model.md; Manufacturer documentation required before publication | DRAFT - NOT INDEXABLE | Open draft |
| Why network context matters for a PLC CPU | Which network details affect a CPU replacement? | Show why a part number alone cannot confirm a drop-in replacement in a control network. | docs/product/comparison-and-recovery-model.md; Qualified technical evidence required | DRAFT - NOT INDEXABLE | Open draft |
| Planning around an obsolete PLC CPU | What should be documented when a PLC CPU is obsolete? | Separate evidence gathering, machine risk, sourcing, and migration decisions. | docs/data/data-management.md; Current manufacturer status required | DRAFT - NOT INDEXABLE | Open draft |
| PLC repair or replacement: which evidence helps? | When is repair evidence more useful than a replacement quote? | Frame the recovery decision around symptoms, downtime, configuration, and available evidence. | docs/product/comparison-and-recovery-model.md; Repair capability evidence required | DRAFT - NOT INDEXABLE | Open draft |
| A control-cabinet checklist for PLC identification | What should be photographed during a PLC cabinet audit? | List the cabinet and machine context that makes a reference request actionable. | /how-it-works/#request-checklist; Technical evidence required | DRAFT - NOT INDEXABLE | Open draft |
| PLC reference aliases and formatting | Why do the same PLC references appear in different formats? | Document normalization without treating an alias as proof of product identity. | docs/data/data-model.md; Source evidence required | DRAFT - NOT INDEXABLE | Open draft |
| What evidence to send with a PLC request | Which files and photos make a PLC request useful? | A short evidence pack for reference, symptom, machine, and desired recovery route. | /how-it-works/#request-checklist; Ardkor intake policy | DRAFT - NOT INDEXABLE | Open draft |
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