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SAIA PCD2.M5540｜Controls Division｜
System Properties
Communication Interfaces: Up to 15 interfaces (RS-232, RS-485, etc.)
I/O Expansion: 8 onboard I/O slots, expandable with module holders to a maximum of 64 slots (up to 1023 central data points)
Remote I/O Expansion: Supported via RIO PCD3.T66x over Ethernet
Program Memory: 1 MB
Automation Server: Integrated
Onboard Interfaces – Saia PCD2.M5540
| Interface Type | Connection Port | Transmission Rate | Notes / Use |
|---|---|---|---|
| RS-232 (serial) | X2 (D-Sub) | ≤115.2 kbit/s | Standard serial communication |
| RS-485 (serial) | X5 (terminal) | ≤115.2 kbit/s | Standard serial communication |
| RS-485 (serial) (free protocols) | X1 (D-Sub) | ≤115.2 kbit/s | Custom/free protocol |
| Profibus DP Slave / Profi S-Net | X1 (D-Sub) | ≤1.5 Mbit/s | Profibus DP slave operation |
| Ethernet (2-port switch) (PCD2.M5540 only) | Ethernet | 10/100 Mbit/s | Integrated 2-port switch |
| USB 1.1 (PGU) | USB | ≤12 Mbit/s | Programming/PGU interface |
SAIA PCD2.M5540｜Controls Division｜
By structuring the information in this manner, the article provides a clear and organized understanding of input channels, transducer supply, and communication implementations in distributed control systems.
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