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SAIA PCD4.M125｜Universal Module ｜
Features & Capabilities
High Input/Output Capacity
Modular architecture allows flexible configuration.
Supports up to 510 central I/O points, expandable to 2048 local I/O points via Profibus DP and other expansion methods.
Generous Memory Options
Up to 1 MB of user memory for programs, text, and data blocks.
Optional 1 MB Flash memory for easy program modification, backup, upload, and download.
Flexible Communication Interfaces
Up to 6 serial data ports, with selectable interfaces: RS-232, S-422, RS-485, or TTY/current loop 20 mA.
Supports Profibus EMS, Profibus DP (master or slave), and Ethernet TCP/IP communication protocols.
Analog Input Capability
7 input channels, 0–20 mA signal range.
Resolution: 12 bits (0–4095), LSB = 5 μA.
Enhanced accuracy achievable through software algorithms such as moving averages—exceeding standard 12-bit performance.
SAIA PCD4.M125｜Universal Module ｜
Typical Technical Parameters
| Parameter | Value |
|---|---|
| Central I/O Capacity | Up to 510 points |
| Local I/O Capacity | Up to 2048 points (via Profibus DP) |
| User Memory | 1 MB |
| Optional Flash Memory | 1 MB |
| Serial Interfaces | Up to 6 (RS-232, S-422, RS-485, TTY 20 mA) |
| Supported Protocols | Profibus EMS, Profibus DP (Master/Slave), Ethernet TCP/IP |
| Analog Inputs | 7 channels, 0–20 mA |
| Resolution | 12 bits (0–4095), LSB = 5 μA |
| Accuracy Enhancement | Via moving average or filtering algorithms |
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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