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 |
|---|---|---|---|---|---|---|---|
| 1 | 00-171-195 | Not stated | Not stated | Processes controller-side computing tasks for the KUKA KRC4 control system. | Individual research | PUBLISHED | Open reference |
| 2 | 00-188-483 | Not stated | Not stated | Routes documented interface signals within the KUKA controller safety path. | Individual research | PUBLISHED | Open reference |
| 3 | 00-193-973 | Not stated | Not stated | Processes controller-side computing for the KUKA KRC4 control system. | Individual research | PUBLISHED | Open reference |
| 4 | 00-284-170 | Not stated | Not stated | The industrial PC controls movement and I/O processing in the KUKA robot controller. | Individual research | PUBLISHED | Open reference |
| 5 | 01-051-810 | Not stated | Not stated | The controller rack controls the KUKA robot controller workload in a KRC1 cabinet. | Individual research | PUBLISHED | Open reference |
| 6 | 01-052-197 | Not stated | Not stated | The industrial computer controls controller workloads in the KUKA KC1 robot system. | Individual research | PUBLISHED | Open reference |
| 7 | 055-1CB00-0BA2 | Not stated | Not stated | The expansion module receives digital inputs and switches digital outputs in a Siemens LOGO! system. | Individual research | PUBLISHED | Open reference |
| 8 | 170ADO35000 | Not stated | Not stated | Receives and processes the documented signals or supply for this discrete output module. | Individual research | PUBLISHED | Open reference |
| 9 | 1734-IB8S | Not stated | Not stated | Receives and processes the documented signals or supply for this safety input module. | Individual research | PUBLISHED | Open reference |
| 10 | 1734-IE8C | Not stated | Not stated | Receives and processes the documented signals or supply for this analog input module. | Individual research | PUBLISHED | Open reference |
| 11 | 1746-HSCE | Not stated | Not stated | Receives and processes the documented signals or supply for this high-speed counter encoder module. | Individual research | PUBLISHED | Open reference |
| 12 | 1746-HSCE2 | Not stated | Not stated | Receives and processes the documented signals or supply for this multi-channel high-speed counter module. | Individual research | PUBLISHED | Open reference |
| 13 | 1746-NI16I | Not stated | Not stated | Receives and processes the documented signals or supply for this analog current input module. | Individual research | PUBLISHED | Open reference |
| 14 | 1746-NI4 | Not stated | Not stated | Converts four field voltage or current signals into SLC 500 input values. | Individual research | PUBLISHED | Open reference |
| 15 | 1747-L532 | Not stated | Not stated | Processes the SLC 500 control program as an SLC 5/03 CPU. | Individual research | PUBLISHED | Open reference |
| 16 | 1747-L542 | Not stated | Not stated | Processes an SLC 500 control program and provides Data Highway Plus communication. | Individual research | PUBLISHED | Open reference |
| 17 | 1756-DHRIO/E | Not stated | Not stated | Routes ControlLogix traffic to DH+ and Remote I/O networks through two documented channels. | Individual research | PUBLISHED | Open reference |
| 18 | 1756-EN2TR | Not stated | Not stated | Transmits ControlLogix data over EtherNet/IP through dual 10/100 Mbps copper ports. | Individual research | PUBLISHED | Open reference |
| 19 | 1756-L55M12 | Not stated | Not stated | Executes the ControlLogix control program as a LOGIX5555 processor. | Individual research | PUBLISHED | Open reference |
| 20 | 1756-L62 | Not stated | Not stated | Processes a ControlLogix project as a 4 MB memory controller. | Individual research | PUBLISHED | Open reference |
| 21 | 1756-L62/B | Not stated | Not stated | Processes the ControlLogix program as a Logix5562 4 MB processor. | Individual research | PUBLISHED | Open reference |
| 22 | 1756-OB32 | Not stated | Not stated | Switches 32 ControlLogix digital outputs toward 10-31 VDC field loads. | Individual research | PUBLISHED | Open reference |
| 23 | 1756-OF4 | Not stated | Not stated | Converts ControlLogix output commands into four current or voltage analog signals. | Individual research | PUBLISHED | Open reference |
| 24 | 1756-PB72 | Not stated | Not stated | Converts 19-32 VDC input into ControlLogix chassis power rails. | Individual research | PUBLISHED | Open reference |
| 25 | 1756-PB75/B | Not stated | Not stated | Converts 19-32 VDC input into a 75 W class ControlLogix chassis supply. | Individual research | PUBLISHED | Open reference |
| 26 | 1768-L43/D | Not stated | Not stated | The CompactLogix controller executes the control program and exchanges status and message data with connected I/O and controllers. | Individual research | PUBLISHED | Open reference |
| 27 | 1783-SFP1GLX/A | Not stated | Not stated | The Rockwell 1000LX SFP transceiver transmits Ethernet data over single-mode fiber. | Individual research | PUBLISHED | Open reference |
| 28 | 1785-L20BC | Not stated | Not stated | The PLC-5 processor executes control logic and exchanges data with connected I/O. | Individual research | PUBLISHED | Open reference |
| 29 | 1785-L40E/E | Not stated | Not stated | The PLC-5 controller executes control logic and exchanges data with connected I/O. | Individual research | PUBLISHED | Open reference |
| 30 | 1785-L40E/F | Not stated | Not stated | The PLC-5 controller executes control logic and exchanges data with connected I/O. | Individual research | PUBLISHED | Open reference |
| 31 | 1785-L60B/C | Not stated | Not stated | The PLC-5 processor executes control logic and exchanges data with connected I/O. | Individual research | PUBLISHED | Open reference |
| 32 | 212-1AE40-0XB0 | Not stated | Not stated | This PLC CPU executes the control program and processes onboard digital and analog I/O for an S7-1200 control system. | Individual research | PUBLISHED | Open reference |
| 33 | 214-1AG40-0XB0 | Not stated | Not stated | This PLC CPU executes the control program and processes onboard digital and analog I/O for an S7-1200 control system. | Individual research | PUBLISHED | Open reference |
| 34 | 221-3BD30-0XB0 | Not stated | Not stated | This signal board receives 24 VDC digital field signals and passes them into the S7-1200 CPU. | Individual research | PUBLISHED | Open reference |
| 35 | 222-1AD30-0XB0 | Not stated | Not stated | This signal board switches four 5 VDC digital output channels from the S7-1200 control system. | Individual research | PUBLISHED | Open reference |
| 36 | 222-1BD30-0XB0 | Not stated | Not stated | This signal board switches four 24 VDC digital output channels from the S7-1200 control system. | Individual research | PUBLISHED | Open reference |
| 37 | 223-0BD30-0XB0 | Not stated | Not stated | Processes two digital input channels and two digital output channels as an SB 1223 signal board in a SIMATIC S7-1200 station. | Individual research | PUBLISHED | Open reference |
| 38 | 223-3BD30-0XB0 | Not stated | Not stated | Processes two 24 V DC digital inputs and two 24 V DC digital outputs at up to 200 kHz in a SIMATIC S7-1200 station. | Individual research | PUBLISHED | Open reference |
| 39 | 231-4HA30-0XB0 | Not stated | Not stated | Measures one analog voltage or current input for a SIMATIC S7-1200 station with the documented SB 1231 resolution. | Individual research | PUBLISHED | Open reference |
| 40 | 231-5QA30-0XB0 | Not stated | Not stated | Measures one Type J or Type K thermocouple input in a SIMATIC S7-1200 station. | Individual research | PUBLISHED | Open reference |
| 41 | 232-4HA30-0XB0 | Not stated | Not stated | Supplies one analog output in the documented -10 V to +10 V or 0 to 20 mA ranges for a SIMATIC S7-1200 station. | Individual research | PUBLISHED | Open reference |
| 42 | 241-1CH32-0XB0 | Not stated | Not stated | Routes serial data through one RS-422/485 interface with Freeport support for a SIMATIC S7-1200 station. | Individual research | PUBLISHED | Open reference |
| 43 | 3BSE000860R1 | Not stated | Not stated | Supplies backup power for an Advant Master control system. | Individual research | PUBLISHED | Open reference |
| 44 | 3BSE025349R1 | Not stated | Not stated | Routes CI854 module connections through its mounting and termination interface. | Individual research | PUBLISHED | Open reference |
| 45 | 3BSE025961R1 | Not stated | Not stated | Routes AC 800M controller data to PROFIBUS DP or DP/V1 devices through the CI854 interface. | Individual research | PUBLISHED | Open reference |
| 46 | 3BSE028586R1 | Not stated | Not stated | Receives 24 V DC safety-related field signals for an S800 control path. | Individual research | PUBLISHED | Open reference |
| 47 | 3RK1322-1DS02-0AA0 | Not stated | Not stated | The Siemens compact starter switches and protects a direct-on-line motor branch under AS-Interface control. | Individual research | PUBLISHED | Open reference |
| 48 | 3UF5011-3AB00-1 | Not stated | Not stated | The SIMOCODE DP unit monitors and controls a motor feeder while exchanging status over PROFIBUS DP. | Individual research | PUBLISHED | Open reference |
| 49 | 3VA2463-5HL32-0AA0 | Not stated | Not stated | The SENTRON molded-case circuit breaker protects and switches a high-current feeder against documented overload and short-circuit conditions. | Individual research | PUBLISHED | Open reference |
| 50 | 3VA9467-0HA20 | Not stated | Not stated | The SENTRON motor operator drives a compatible circuit-breaker mechanism from an AC or DC control supply. | 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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