CI840
PROFIBUS DP-V1 Communication Interface · 3BSE022457R1 · S800 I/O
Lifecycle note: Preserve the primary/backup configuration, station address, output hold time and OSP settings. Distinguish CI840 from CI840A and exchange-coded supply versions.
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+86-18020776786PROFIBUS DP-V1 Communication Interface · S800 I/O
ABB CI840 is an ABB S800 I/O fieldbus communication interface for PROFIBUS DP-V1. The selected order number is 3BSE022457R1. CI840 supports 1+1 redundant operation and connects the controller-side fieldbus to the S800 ModuleBus.
The CI840 manual describes TU846 or TU847 termination units, input power at 24 V DC and supervisory functions for the I/O station. Its configuration includes redundant operation, HART handling, Hot Configuration In Run and output hold time. These settings must match the installed controller engineering method and firmware.
During maintenance, record the station identity and the A/B unit roles before exchange. Check both PROFIBUS paths and supply-supervision indications, then validate output recovery and OSP behavior under the approved process procedure. Procurement must retain the requested ordinary order number separately from an EXC exchange identifier.
| Manufacturer | ABB |
|---|---|
| Model / selected order number | CI840 / 3BSE022457R1 |
| Product function | S800 I/O fieldbus communication interface |
| Fieldbus protocol | PROFIBUS DP-V1 |
| Redundant operation | 1+1 primary / backup |
| Termination units | TU846 or TU847 |
| Electrical ModuleBus interfaces | 2; TU847 connects one electrical ModuleBus |
| Power input | 24 V DC; 19.2–30 V range |
| Communication speed | Up to 12000 kbit/s |
| HART function | HART pass-through; normal or extended mode configuration |
| Configuration during operation | Hot Configuration In Run (HCIR) |
| Output timeout action | Predefined OSP value when the applicable hold-time condition expires |
| AC800M configuration method | Control Builder Professional |
| Station diagnostics | A/B unit role, redundant power, redundant cable and station-address warnings |
Preserve the primary/backup configuration, station address, output hold time and OSP settings. Distinguish CI840 from CI840A and exchange-coded supply versions.
EXC identifies an exchange ordering context. This listing is for the user-selected ordinary order 3BSE022457R1; confirm any core-return or exchange conditions separately.
The ABB DTM manual notes that incorrect configuration for single mode can raise the warning. Check the configured operating mode before concluding that a backup unit has failed.
The CI840 documentation describes two electrical ModuleBus interfaces, with TU847 connecting one. Match the termination unit to the installed single or redundant I/O arrangement.
If the new primary does not receive the required configuration and data in time, output channels go to their predefined OSP values. Review those values with the process requirements.
ABB states that configuration is set in Control Builder Professional for AC800M. The corresponding DTM configuration control is not the editing route for that controller.
Yes. ABB warns that extended HART mode permits fewer I/O modules. Use the applicable CI840 memory map and actual HART data requirement when sizing the station.
The DTM identifies cable A and cable B failures separately, associated with the CI840 in each position. Compare that indication with the physical route before replacing hardware.
Confirm which unit is primary and that station communication and output behavior have recovered as intended. The DTM service status exposes the primary role; process validation remains part of the commissioning procedure.
Send the model, complete part number, quantity, destination and nameplate photo. We will verify identification details before confirming availability and lead time.
Official PDF extract: CI840 / 3BSE022457R1 — Sales PLC Cover & ABB Documentation. File size is below 1 MB; verify the exact installed hardware and configuration before use.
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