CP471-00 S1 is a Processor Module used in supported YOKOGAWA CENTUM VP Field Control Unit configurations. The CP471 functions as the processor component of the FCU and supports dual-redundant processor configurations in applicable CENTUM VP systems.Unlike a conventional PLC CPU or standalone industrial computer, CP471 operates as part of the CENTUM VP FCU architecture and works together with the Field Control Unit hardware, I/O modules, ESB bus components and Vnet/IP control network.
Yokogawa documentation identifies CP471 as a Processor Module for CENTUM Field Control Units and lists AFV30, AFV40, A2FV50 and A2FV70 series FCUs among the supported configurations.
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IMPORTANT NOTE ABOUT CP471-00 S1
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The product is listed commercially as YOKOGAWA CP471-00 S1.
For engineering verification, the actual product nameplate should be checked against the complete Yokogawa ordering information.
"S1" should not automatically be interpreted as an independent official Yokogawa CP471 suffix. Yokogawa documentation defines CP471 configurations through its model and suffix structure.
For replacement projects, customers are encouraged to provide a clear photograph of the existing CP471 or CP461 nameplate before ordering.
| Parameter | Specification |
|---|---|
| Manufacturer | YOKOGAWA |
| Model | CP471 |
| Ordering Configuration | CP471-00 |
| Product Type | Processor Module |
| System | CENTUM VP |
| Installation | Field Control Unit |
| Control Network | Vnet/IP |
| Network Configuration | Dual-redundant |
| Processor Redundancy | Supported |
| Applicable FCU Families | AFV30 / AFV40 / A2FV50 / A2FV70 |
| EC401 Compatibility | Style Code S3 or later where applicable |
| Origin | Singapore /Japan |
| Approximate Weight | 1.2 kg |
| Approximate Dimensions | 23*18*10 cm |
| Condition | New |
| Availability | In Stock |
| Listed Price | US$4,000 |
| Warranty | 12 Months |
| Shipping | Worldwide |
| HS code | 8471800000 |
FUNCTION OF THE CP471 PROCESSOR MODULE
The CP471-00 provides the processor function within the CENTUM VP Field Control Unit.
The module is responsible for processing configured control functions within the FCU and works with the associated field I/O and control-system hardware.
Depending on the CENTUM VP engineering configuration, the field control system may perform functions including regulatory control, PID control, sequence-related control, logic processing, interlocking, timing, calculations and field I/O processing.
The exact control functions available depend on the installed CENTUM VP software and engineering configuration.
--DUAL-REDUNDANT PROCESSOR CONFIGURATION
CP471 supports dual-redundant processor configurations in applicable CENTUM VP Field Control Units.
Two CP471 processor modules can be installed in a duplexed FCU to provide processor redundancy.
This configuration is particularly relevant to process-control systems where continued controller operation is required during processor maintenance or replacement.
The actual redundancy configuration depends on the Field Control Unit model and system engineering.
--CENTUM VP COMPATIBILITY
Yokogawa documentation identifies CP471 for supported CENTUM VP Field Control Unit configurations.
Compatible FCU families include:
AFV30
AFV40
A2FV50
A2FV70
The exact compatibility depends on the FCU suffix, CENTUM VP software version, CP471 suffix, EC401 configuration and applicable system requirements.
Customers replacing an existing processor should confirm the complete FCU model before ordering.
CP471-00 SOFTWARE COMPATIBILITY
Hardware compatibility alone is not sufficient when replacing a CP471 processor.
The installed CENTUM VP version and Control Function for Field Control Station software should be checked before installation.
Depending on the system generation, applicable software versions and patches may be required.
For replacement projects, confirm:
CENTUM VP version
Control Function for Field Control Station version
Applicable software patch
Existing processor model
Existing FCU model
EC401 style code
Processor redundancy configuration
Regional certification requirements
CP471-00 AND EC401 COMPATIBILITY
EC401 ESB Bus Coupler compatibility is an important consideration when CP471 is introduced into an existing CENTUM VP system.
Yokogawa documentation specifies EC401 with Style Code S3 or later for CP471 configurations covered by the relevant documentation.
If CP471 is being used to replace an existing CP461, customers should provide the EC401 identification whenever possible.
This allows the processor replacement configuration to be checked before shipment.
CP471-01 belongs to the same CP471 processor family but has a different configuration suffix.
It should not automatically be substituted for CP471-00.
The correct suffix must be confirmed according to the existing FCU, system configuration, certification requirements and applicable Yokogawa documentation.
YOKOGAWA CP471-01
CP471-10 is another CP471 configuration associated with explosion-protection requirements.
It should only be considered when the installed system and certification requirements support the corresponding configuration.
CP471-10 should not be presented as a universal replacement for CP471-00.
YOKOGAWA CP471-10
CP471-11 is another CP471 family configuration with its own suffix requirements.
The correct configuration should be verified against the existing system and certification requirements before ordering.
YOKOGAWA CP471-11
CP471-00 RELATED AND REPLACEMENT MODELS
YOKOGAWA CP461
CP461 is one of the most important related processor models for CP471.
Yokogawa documentation describes a defined replacement path from CP461 to CP471 under specified system conditions.
However, CP471 should not be treated as a universal plug-and-play replacement for CP461.
The replacement may involve software version, software patch, EC401 style code, FCU configuration and authorized service procedures.
CP461 and CP471 should also not be used together as a dual-redundant processor pair.
YOKOGAWA CP471-01
CP471-01 belongs to the same CP471 processor family but has a different configuration suffix.
It should not automatically be substituted for CP471-00.
The correct suffix must be confirmed according to the existing FCU, system configuration, certification requirements and applicable Yokogawa documentation.
If the existing system uses CP461 and the customer wants to replace it with CP471, the project should be treated as a system-level compatibility check.
Before ordering CP471, confirm:
Existing CP461 model
Existing FCU model
CENTUM VP software version
Control Function for Field Control Station version
Applicable software patch
EC401 style code
Processor redundancy configuration
Certification requirements
Yokogawa documentation also indicates that CP461 and CP471 cannot coexist in a dual-redundant processor configuration.
For actual CP461-to-CP471 repla
POWER-ON AND FUNCTIONAL TEST RECORD
The product page should clearly distinguish between visual inspection, power-on testing and system-level functional testing.
Recommended inspection record:
Product: YOKOGAWA CP471-00
Visual Inspection: Pass / Pending
Nameplate Verification: Pass / Pending
Housing Inspection: Pass / Pending
Connector Inspection: Pass / Pending
Power-On Test: Pass / Not Performed
LED / Status Inspection: Pass / Not Performed
Communication Test: Pass / Not Performed
System-Level Functional Test: Pass / Not Performed
Inspection Date: YYYY-MM-DD
QC Reference: Inspection Number
A power-on test should not be described as a complete functional test.
A full system-level functional test should only be claimed when the CP471 has actually been tested in an appropriate CENTUM VP environment.
Common Issues Regarding Product Usage
Q: Communication failure or data inconsistency
A: ✔ Verify that the configurations of protocols such as ProfiNet/Profibus are consistent;
✔ Use network analysis tools to monitor latency and packet loss;
✔ Ensure that the port settings of CP471-00 are correct (speed, duplex mode, etc.);
✔ Eliminate physical link issues (disconnection, poor contact, shielding problems).
Q: Module cannot be recognized, status indicator is abnormal
A: ✔ Reinsert and re-activate the module after power loss;
✔ Replace the backplane connectors;
✔ Check the battery and configuration saving mechanism;
✔ Conduct consistency checks on the primary and backup units.
Q: Control logic failure or operation not as expected
A: ✔ Recheck the I/O address mapping against the control strategy;
✔ Use simulation tools in the engineering software to verify the logic;
✔ Check if the latest program has been downloaded and enabled.
✔ Monitor whether the signal acquisition and output are consistent with the actual state of the on-site equipment.
Q: Redundant switching failure or switching delay
A: ✔Optimize the primary-standby synchronization mechanism to ensure data consistency.
✔Avoid excessive and frequent manual switching;
✔Carry out redundancy switching stress tests in the test environment.
ORIGINAL YOKOGAWA MANUAL AND PDF