Downloads
1. Alstom ALSPA SNP Master Driver – Information Sheet
alstom-alspa-snp-g3.docx
Compatible Devices
Alstom ALSPA device
Accessible Data
| Prefix | Description | Element Size | Access |
|---|---|---|---|
| R | Data Registers | Word | Read / Write |
| AI | Analog Inputs | Word | Read / Write |
| AQ | Analog Outputs | Word | Read / Write |
| I | Digital Inputs | Bit | Read / Write |
| M | Temporary Non‑Retentive Coils | Bit | Read / Write |
| Q | Digital Outputs | Bit | Read / Write |
| T | Temporary Coils | Bit | Read / Write |
| SA | SA Discretes | Bit | Read / Write |
| SB | SB Discretes | Bit | Read / Write |
| SC | SC Discretes | Bit | Read / Write |
| S | S Discretes | Bit | Read Only |
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