Description
Product Overview
The ALSTOM 42011-106-00 A01 ITC_VIOM_VIOC VER.A01 is a legacy ALSTOM control-system board associated with the ITC/VIOM/VIOC architecture. The complete identification includes 42011-106-00, A01, and ITC_VIOM_VIOC VER.A01. Available records describe the unit as an industrial control/interface board, while a spare-parts document more specifically identifies part number 42011-106-00 A01 as a VIOC onboard I/O processor.
Functionally, the ALSTOM 42011-106-00 A01 is better understood as an I/O processing and interface element than as a conventional standalone PLC CPU. It operates within the host ALSTOM architecture, where the controller, VIOC/VIOM hardware, backplane, and field-interface circuitry work together. The board therefore depends heavily on its installed system, slot, associated I/O hardware, and software revision. The A01 revision is worth matching during replacement—particularly on an older installation where a later board revision may have different software or configuration requirements.
The ALSTOM ITC_VIOM_VIOC VER.A01 identification also appears repeatedly in ALSTOM product indexes, supporting the association between the 42011-106-00 number and the VIOC/VIOM architecture. One secondary listing claims a 6U Eurocard form factor, backplane 5 VDC logic power, 24 VDC field I/O, and 0–55 °C operation. Those values are plausible for this type of rack hardware, but they are not sufficiently corroborated to present them as confirmed specifications.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | ALSTOM |
| Part Number | 42011-106-00 |
| Hardware Revision | A01 |
| Board Marking | ITC_VIOM_VIOC VER.A01 |
| Product Type | VIOC I/O Controller / Interface Board |
| System Family | ITC / VIOM / VIOC |
| Primary Function | I/O processing and system interface |
| Architecture | Rack-based ALSTOM control system |
| Backplane Interface | System-specific |
| Field I/O Interface | Via associated VIOM/VIOC hardware |
| Logic Power | Backplane supplied; exact voltage requires verification |
| Field Power | System dependent |
| Communication | Proprietary/system backplane interface; verify installed configuration |
| Software Association | VIOC_FCT_J1 / VIOC_FCT_J2 references reported with the board |
| Hardware Revision | VER.A01 |
| Operating Temperature | Verify against original ALSTOM documentation |
| Mounting | Rack-mounted plug-in board |
| Firmware/Software | System and revision dependent |
| Condition | New Surplus, subject to inspection and functional testing |
The associated spare-parts record explicitly lists VIOC_FCT_J1_V1.1.0 and VIOC_FCT_J2_V1.1.0 with the 42011-106-00 A01 VIOC board.
Engineering caution: Some secondary descriptions call this a “power supply circuit” or assign generic 24 VDC/5 VDC specifications, while other sources identify it as an I/O controller. The VIOC identification and spare-parts record provide stronger evidence for an I/O-processing role. Exact electrical ratings should be taken from the installed board documentation, not from generic reseller specifications.
42011-106-00
Related Products
- ALSTOM I/OBUS2 12004-103-01 — I/O bus interface module used in the broader legacy ALSTOM control architecture. It handles bus-level interfacing rather than serving as the VIOC processing board.
- ALSTOM I/OBE2 12004-104-00 — I/O bus extension/interface hardware. It can complement a VIOC installation where additional I/O expansion is required, but it is not a direct replacement.
- ALSTOM VIIB16-C 12011-105-00 — Digital interface module associated with ALSTOM control hardware. Its function is oriented toward discrete I/O rather than VIOC processing.
- ALSTOM 12004-102-01 VPS BOARD VER.C — VPS power/interface board from the same legacy ALSTOM ecosystem. It supports a different portion of the rack architecture and should not be substituted for the VIOC controller.
- ALSTOM 12004-106-04 VOOB8-B — Digital output/interface board. Useful as a complementary I/O module when the system requires discrete output handling.
- ALSTOM SDK-C0148 / 12003-101-01 / SBS05M09B — Legacy ALSTOM control module. It belongs to the same broad control ecosystem but has a different hardware designation and application.
- ALSTOM SDK-C0167-1 / 12004-08-01 / SBS07M076B — Related legacy control board. Similar rack architecture does not establish direct interchangeability.
- ALSTOM N895600512D / N895600051C / ECPU_1 — Central processor hardware from the broader ALSTOM platform. This is more closely associated with central control processing than the VIOC I/O-processing role.
Frequently Asked Questions
1. What is ALSTOM 42011-106-00 A01 ITC_VIOM_VIOC VER.A01 used for?
The strongest available evidence identifies it as a VIOC onboard I/O processor/controller board used within the ALSTOM ITC/VIOM/VIOC architecture.
It manages system-level I/O processing and interfaces with associated VIOC/VIOM hardware rather than functioning as a generic standalone PLC CPU.
2. Is 42011-106-00 A01 a VIOC controller board or a power-supply board?
The identification is somewhat muddied by secondary listings.
One source categorizes it as a “power supply circuit,” while another explicitly describes it as an I/O Controller Module, and a spare-parts document identifies it as a VIOC onboard I/O processor.
For engineering purposes, the VIOC/I/O-controller identification is better supported than the generic power-supply description.
3. Does 42011-106-00 A01 require specific VIOC software?
There is evidence linking the board to:
- VIOC_FCT_J1_V1.1.0
- VIOC_FCT_J2_V1.1.0
in a spare-parts record.
That does not establish that every A01 board requires exactly those software versions. Before replacement, record the software/configuration version running in the existing VIOC system.
4. Can I hot-swap the VIOC board?
Do not assume hot-swap capability.
The board is designed for rack installation, but physical plug-in construction does not prove that energized insertion or removal is permitted by the ALSTOM system.
For replacement, place the affected equipment in its approved maintenance state, isolate power as required, use ESD protection, and verify the VIOC rack after restart.
5. Will replacing 42011-106-00 A01 erase my control logic?
The board is primarily associated with I/O processing, not necessarily the main application-logic storage location.
Still, configuration matters. I/O assignments, VIOC software, board revision, and system parameters must be compatible. Preserve the existing configuration before removing the original card.
6. Does the A01 revision matter?
Yes.
The complete identification is 42011-106-00 A01 / ITC_VIOM_VIOC VER.A01. The revision should be treated as part of the procurement specification rather than an optional suffix.
For a legacy system, match:
- 42011-106-00
- A01 revision
- VIOC/VIOM architecture
- Software revision
- Rack/slot
- Associated I/O boards
A different hardware revision should only be used after compatibility has been established.
7. How should I verify a New Surplus 42011-106-00 A01?
For a critical spare, inspect and test:
- 42011-106-00 part number
- A01 revision
- ITC_VIOM_VIOC VER.A01 board marking
- PCB revision
- Backplane connector condition
- Front-panel condition
- Component condition
- Rack/slot compatibility
- VIOC software/configuration compatibility
- Power-up diagnostics
- I/O communication and scan behavior
Procurement judgment: This is a part where revision matching is important. The available evidence supports its identity as an ALSTOM VIOC/I/O processing board, but several public listings contain conflicting generic specifications. For a plant-critical replacement, the complete part number, A01 revision, installed VIOC software, and original cabinet documentation should control the purchase decision.
