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GE DS200SNPAH1A
Product Name: SNP Protocol Interface Daughter Board
Overview: The DS200SNPAH1A is an SNP Protocol Interface Daughter Board manufactured by General Electric as part of the LS2100 Series. It works in conjunction with the DS200DSPC Digital Signal Processor Control Motherboard, installed in the VMEbus rack alongside the SPC and the DS200ADMA Analog-to-Digital Module. Its primary function is to provide isolated RS-484 and RS-232C communication between the attached DSPC board and the Series 90-30 PLC.
Detailed content
Technical Specifications:
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Manufacturer: General Electric
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Series: LS2100 Series / Series 90-30 PLCs
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Product Type: Daughter Board (Protocol Interface)
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Communication: Isolated RS-484 and RS-232C
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Protocol Support: Series Ninety Protocol (SNP)
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LCI Support: Equipped with LCI (Local Control Interface) function for PLC-based Load Commutated Inverter applications
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Protocol Selection: SNPA parameter 0 disables the Series 90 Protocol; parameter 1 enables it
Functional Features:
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Flexible protocol configuration via SNPA parameter 0 or 1
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Provides isolated RS-484 and RS-232C communication interfaces, preventing ground loop potential differences and electromagnetic interference
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Acts as the communication hub for Mark V systems
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Specifically supports PLC-based Load Commutated Inverter (LCI) applications
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Not used with LCIs equipped with Innovation Series Controllers (that system design eliminates the need for this board)
Working Principle: The board sits as a daughter board on the DSPC motherboard and bridges DSPC to the Series 90-30 PLC via isolated serial communication using the SNP bus protocol.
Application Scenarios: Core communication in GE Mark V (MK5) systems; PLC-based LCI applications for turbine control.
Installation Requirements:
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Installed in the VMEbus rack with the DSPC motherboard, SPC, and ADMA module
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Configured within the control cabinet
Usage Notes:
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Set SNPA protocol parameter correctly (0 = disabled, 1 = Series 90 Protocol enabled) per application requirement
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This board is not compatible with Innovation Series Controller based LCIs
