Features:
- Provides the Series Ninety Protocol path between the LCI control and a Series 90-30 PLC.
- Combines an RS-232C interface with a second isolated serial communication path.
- Uses configurable port enable values and a defined daughterboard slot assignment.
The PLC-based LCI architecture uses SNPA communication for application sequencing, reference exchange, and fault reporting.
A DSPC host carries the daughterboard and remains the VME bus master while the PLC handles job-specific control functions.
The alternative Innovation Series Controller architecture replaces the PLC with a UCVA processor and therefore omits the SNPA daughterboard.
The General Electric DS200SNPAH1A SNP Protocol Interface Daughterboard may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
General Electric DS200SNPAH1A SNP Protocol Interface Daughterboard Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
How the PLC communication path is divided
- Protocol path: DS200SNPAH1A carries the Series Ninety Protocol serial link used by the Series 90-30 PLC.
- PLC duties: The PLC handles application-dependent sequencing plus speed and torque reference selection.
- DSPC duties: The host processor retains the fast LCI control functions and supplies non-volatile tuneup values to the PLC.
- Returned information: Extensive DSPC fault reporting can pass through the PLC to the optional display or customer communications.
Setting the two SNP communication ports
- Port 1 variable: SNPA_P1_PROTOCOL controls the first DS200SNPAH1A serial channel independently.
- Port 2 variable: SNPA_P2_PROTOCOL provides a separate enable selection for the second serial channel.
- Disabled value: A setting of 0 leaves the selected port inactive and should be checked when a link remains silent.
- SNP value: A setting of 1 enables Series Ninety Protocol operation on the selected port.
Matching the daughterboard to its DSPC position
- Host assembly: DS200SNPAH1A installs on the DS200DSPC processor board rather than directly in the VME backplane.
- Slot range: SNPA_SLOT identifies daughterboard positions 1 through 4, with slot 1 at the bottom of the DSPC.
- Position check: The configured slot must agree with the physical daughterboard location after service work.
- Architecture limit: A UCVA-based Innovation Series Controller installation does not use this daughterboard position.
Separating configuration faults from hardware faults
- DETECT/CFG indication: This message means the SNPA communication board was not initialized or configured correctly.
- First comparison: Confirm that DS200SNPAH1A is expected in a PLC-based cabinet before changing any hardware.
- Configuration check: Compare both port enables and SNPA_SLOT with the intended serial path and daughterboard position.
- Hardware decision: If configuration and seating agree and no other indication explains the fault, the manual directs replacement of the SNPA daughterboard.