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The 6ES5535-3MA12 handles serial data exchange for SIMATIC S5 PLC systems. This communication processor offloads networking tasks from the main CPU. You can use it for connecting barcode readers or printers.
Key Technical Parameters
The table below lists all essential technical specifications for this communication processor.
| Specification | Details |
|---|---|
| Part Number | 6ES5535-3MA12 |
| Product Type | Communication Processor |
| Number of Ports | 2 serial interfaces |
| Interface Type 1 | RS-232C (V.24) |
| Interface Type 2 | 20 mA TTY (current loop) |
| Transmission Rate | 300 bps to 19.2 kbps |
| Buffer Memory | 4 KB dual-port RAM |
| Dimensions (W x H x D) | 250 mm x 25 mm x 210 mm |
| Weight | Approx. 0.55 kg |
| Interface to CPU | S5 backplane bus |
| Power Supply | 5V DC from backplane |
| Number of Components | Single-width module |
Physical Characteristics and Installation
This communication processor weighs approximately 0.55 kg for easy handling. Its dimensions measure 250 mm x 25 mm x 210 mm, occupying one single-width slot. First, slide the 6ES5535-3MA12 into a free rack slot. Then, connect your serial devices to the front ports. Finally, configure the communication parameters via your S5 program. The front panel includes LED indicators for port activity.
Port Configuration and Baud Rates
The 6ES5535-3MA12 provides two independent serial interfaces for flexible connectivity. One port uses RS-232C for standard modem or PC connections. The other port employs 20 mA TTL for older industrial peripherals. Each port supports baud rates from 300 bps up to 19.2 kbps. You can set parity, stop bits, and data length independently per channel.
Buffer Memory and Data Handling
This communication processor integrates 4 KB of dual-port RAM for data buffering. The buffer stores incoming messages before the CPU processes them. Consequently, this design prevents data loss during high-speed communication bursts. The module handles all low-level protocol tasks automatically. As a result, your main CPU can focus on core control functions.