Description
The GE General Electric DS200SNPAH1A, full assembly number DS200SNPAH1ABB, is an SNP Protocol Interface Daughterboard designed for GE LS2100 and compatible Mark V control applications. The SNPA board provides serial communication between the DS200DSPC Digital Signal Processor Control board and a Series 90-30 PLC using the Series Ninety Protocol (SNP). It supports isolated RS-485 and RS-232C serial communication and is installed in the VMEbus rack alongside the DSPC and related control hardware. The board is specifically associated with PLC-based LCI applications; LCI systems using Innovation Series Controllers do not require this SNPA daughterboard.
Product Datasheet
| Specification | Details |
|---|---|
| Brand | GE General Electric |
| Model | DS200SNPAH1A |
| Full Part Number | DS200SNPAH1ABB |
| Series | Mark V DS200 / LS2100 |
| Product Name | SNP Protocol Interface Board |
| Functional Acronym | SNPA |
| Board Type | Protocol Interface Daughterboard |
| Main Function | Series Ninety Protocol communication |
| Primary Interface | Isolated RS-485 / RS-232C serial communication |
| Connected Controller | DS200DSPC Digital Signal Processor Control Board |
| PLC Compatibility | GE Series 90-30 PLC |
| Protocol | Series Ninety Protocol (SNP) |
| Communication Mode | Half-duplex serial communication |
| Mounting | VMEbus rack |
| PCB Coating | Conformal coating |
| Manual | GEI-100226 |
| Product Status | Legacy / Obsolete |
| Condition | As supplied / verify actual condition |
Key Features
- GE SNP Protocol Interface Daughterboard
- Full assembly number DS200SNPAH1ABB
- Designed for GE LS2100 and related legacy control applications
- Provides communication between DSPC and Series 90-30 PLC equipment
- Supports Series Ninety Protocol (SNP)
- Isolated RS-485 serial communication
- RS-232C serial communication
- Half-duplex serial protocol operation
- VMEbus rack installation
- Designed to work with the DS200DSPC control board
- Conformal-coated PCB construction
- Used primarily in PLC-based LCI configurations
- GE part-specific documentation: GEI-100226
Common Questions & Answers
Q: What is the DS200SNPAH1A?
A: It is a GE SNP Protocol Interface Daughterboard used to provide serial communication between the DSPC control board and compatible Series 90-30 PLC equipment.
Q: What is the full part number?
A: The supplied assembly number is DS200SNPAH1ABB.
Q: What protocol does the SNPA board use?
A: The board uses GE’s Series Ninety Protocol, commonly referred to as SNP.
Q: What communication interfaces are supported?
A: Documentation identifies RS-232C and isolated RS-485 serial communication for the SNPA interface.
Q: What board works with the DS200SNPAH1A?
A: The SNPA is used with the DS200DSPC Digital Signal Processor Control board and related LS2100 control hardware.
Q: Is the SNPA required for every LCI system?
A: No. The SNPA daughterboard is associated with PLC-based LCI configurations. LCI systems using an Innovation Series Controller eliminate the need for this daughterboard.
Troubleshooting & Safety
Before installation, completely isolate the associated control cabinet and VMEbus rack from applicable power sources. Follow site lockout/tagout and ESD procedures when handling the PCB.
Verify the complete DS200SNPAH1A / DS200SNPAH1ABB identification and compare the replacement with the existing assembly. Inspect the serial connectors, daughterboard connections, VMEbus interface, PCB coating, and mounting hardware for damage or contamination.
If communication problems occur, check the RS-232C/RS-485 wiring, connector seating, SNPA protocol configuration, and the connection to the DS200DSPC board. The documented SNPA configuration includes protocol selection in which the Series 90 Protocol can be enabled or disabled.
Do not install this board in an Innovation Series Controller-based LCI application simply because the base DS200 number appears compatible. Confirm the system architecture and complete part number before replacement.
Recommended GE Models
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- GE DS200SNPAH1ABB – SNP Protocol Interface Daughterboard Assembly
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