Description
Key Technical Specifications
- Part Number: DS200SLCCG1AGH
- Manufacturer: GE
- Series: Mark V
- Product Type: LAN Communication Card
- Primary Function: Provides communication circuitry for GE drive and excitation systems
- Communication Type: LAN interface
- Signal Path: Non-isolated and isolated communication circuits
- Processor: Integrated LAN Control Processor
- Memory: Two removable EPROM memory boxes
- Application: GE Mark V turbine control and drive systems
Product Introduction
GE DS200SLCCG1AGH is a Mark V LAN communication card used in GE drive, exciter, and turbine control systems. It provides isolated and non-isolated communication paths through an integrated LAN control processor.
This board is bought as an exact replacement when the site needs the same Mark V communication behavior and memory layout. The removable EPROM boxes and network interface details make revision matching important during replacement.
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to This Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| No comms with host system | Failed LAN card or wrong firmware/data set | ✅ High | Check status LEDs and read the diagnostic buffer on the host | Verify EPROM content and board revision before replacement |
| Intermittent network dropouts | Loose connector or bad cable shielding | ✅ High | Inspect cable terminations and continuity end to end | Reseat connectors and verify grounding before condemning the card |
| System boots but cannot exchange data | EPROM mismatch or corrupted configuration | ✅ High | Compare installed memory boxes to the removed card | Transfer the correct EPROM set and document orientation |
| Card shows no activity | Loss of rack power or seating issue | ❌ Low | Measure rack supply voltage and reseat the card | Check backplane power and slot contact first |
| Communication error after swap | Revision mismatch with existing Mark V host | ✅ High | Match exact part suffix and check site record/photos | Use the same suffix and firmware set as the original board |
| Other cards work, only this node fails | Local card fault | ✅ Medium | Swap only after confirming cabling and host settings | Replace the card after wiring and configuration checks |
Contact technical support with photos, diagnostic logs, and the exact installed EPROM set if you are still stuck.
- DS200SLCCG1AGH
Frequently Asked Questions
Q: What does the GE DS200SLCCG1AGH do?
A: It is a LAN communication card for GE Mark V systems. It handles communication between the control system and related drive or excitation hardware.
Q: Is this the same as DS200SLCCG1A?
A: Not always. The suffix matters, and buyers should match the full part number on the old board. A suffix mismatch can mean different firmware, assembly, or hardware revision.
Q: Can I swap it without checking the EPROMs?
A: No. The removable EPROM memory boxes are part of the configuration, so you should verify that the replacement matches the original set before powering up.
Q: Is this hot-swappable?
A: Do not treat it as hot-swappable. Power down first, then remove and replace it. Live handling can damage the card or the rack.
Q: What usually causes failure on this board?
A: In many cases the issue is not the board itself. Loose connectors, bad cable shielding, bad EPROM data, or a revision mismatch can look like a failed communication card.
Q: Why is it often sold as surplus or tested used stock?
A: GE Mark V parts are legacy items, so new factory stock is limited. That is why the market depends on surplus, unused, or tested replacement units.
Q: What should I verify before ordering?
A: Confirm the exact suffix, the current EPROM set, and the Mark V host revision. I would also photograph the old card, its memory boxes, and the wiring before removal.


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