Product Core Brief
- Model: ICP232 029.359325
- Brand: Alstom
- Series: Industrial Control Platform (ICP)
- Core Function: Embedded serial communication interface board providing RS-232 protocol bridging and local logic control.
- Product Type: Serial Communication Control Board
- Key Specs: RS-232 Standard | Embedded Logic | DC Industrial Supply
- Condition: New Surplus / OEM Original

Alstom ICP232 029.359325
Key Technical Specifications
- Part Number: 029.359325
- Communication Standard: (RS-232 Serial)
- Function: Protocol Bridging & Data Acquisition
- Form Factor: Single-Board Embedded Controller
- Power Supply: Industrial DC with Overvoltage/Short-Circuit Protection
- Data Role: Command Reception & Sensor Signal Processing
- Integration: PLC, HMI, and Master Controller Compatible
- Application Tier: Local Control Node / Interface Module
Product Introduction
Serving as the communication backbone for legacy automation, this Alstom 029.359325 bridges older RS-232 equipment with modern control architectures. It handles serial data acquisition, command routing, and local logic execution for packaging, conveyance, and utility monitoring systems.
Retrofitting obsolete serial hardware usually means replacing entire panels. This dedicated interface board eliminates that capital expense by acting as a direct protocol translator. You get reliable serial handshaking and embedded processing without ripping out your existing backplane or upgrading your entire DCS.
QA & Testing SOP
Serial boards are notorious for failing silently. We don’t just check for continuity; we verify data integrity under load.
- Visual & Anti-Counterfeit Audit: We inspect the PCB for trace corrosion, verify component date codes, and check the Alstom silkscreen to ensure it isn’t a field-hacked clone.
- Power Rail Validation: Using a Fluke multimeter, we apply DC power and verify the onboard voltage regulators are stepping down correctly without excessive ripple or thermal runaway.
- Loopback Data Test: We tie TX to RX on the RS-232 port and push a known hex string through the board to verify the UART logic is intact and passing data without bit errors.
- Protection Circuit Check: We verify the overvoltage and short-circuit protection diodes on the serial lines are functional, ensuring the board won’t fry if a tech accidentally shorts the DB9 connector.
- ESD Safe Packaging: These boards are highly susceptible to static damage during transit. We bag them in anti-static shielding with moisture barriers.

Alstom ICP232 029.359325
Installation Pitfalls & Guide
❗ RS-232 Ground Loops: Connecting this board to a remote HMI or PLC over long serial runs is a grounding nightmare. If the two devices are on different power circuits, ground potential differences will fry the RS-232 transceiver. Always use an isolated serial converter or ensure a single-point ground bond.
❗ Pinout Assumptions: Never assume standard DB9 pinouts. Industrial RS-232 implementations frequently swap RTS/CTS or use non-standard handshaking. Pull the original wiring diagram before terminating.
❗ Baud Rate & Parity Mismatches: This board lacks auto-negotiation. If the new board is configured for 9600-N-8-1 and your legacy PLC is set to 19200-E-7-1, communication will fail silently. Document the exact serial parameters before powering up.
Replacement SOP:
- Pre-Install: Photograph existing wiring; verify new board DIP switches/jumpers match the old unit.
- Removal: Disconnect DC power first, then serial cables; label every wire.
- Install: Seat the board firmly; reconnect serial lines last to prevent hot-plug transients.
- Power-On Test: Apply DC power, verify LED status, then initiate a serial ping/handshake test from the master controller.
Technical FAQ
Can I use this board for Modbus RTU over RS-232?
Yes, but only if your master controller is handling the Modbus framing. This board acts as the physical RS-232 interface and local logic processor. It doesn’t inherently run a Modbus stack unless pre-programmed for it. Verify your application’s protocol requirements before ordering.
Is this a drop-in replacement for the older 029.359.324?
Generally, yes. Alstom typically maintains backward compatibility within the same family, but minor firmware or jumper differences can exist. Send us your exact legacy part number, and we will cross-reference the revision history to confirm direct compatibility.
What happens if I exceed the DC voltage rating?
The board has onboard overvoltage protection, but it’s designed for transient spikes, not sustained over-voltage. Pushing higher voltage will eventually blow the protection diodes and take out the UART IC. Stick to the rated DC supply.
Do you have the technical manual for this specific part?
We provide the wiring diagram and basic configuration guide with every shipment. Full OEM service manuals for legacy Alstom gear are scarce, but our engineering team can usually answer specific integration questions over the phone.
Why is this considered new surplus instead of refurbished?
This unit was pulled from sealed OEM overstock before ever being installed. We test it to verify functionality, but we aren’t replacing capacitors or reflowing solder joints. You’re getting unused silicon at a fraction of the obsolete OEM price.
Need the mating connector and cable specs for this RS-232 board? I can pull those up for you.






