DS200SIOBG1AAA | GE DS200 Serial Communication Module In Stock

Description

Product Core Brief

• Model: DS200SIOBG1AAA
• Brand: General Electric (GE)
• Series: Mark V DS200
• Core Function: Serial communication board with multi-protocol support
• Product Type: Serial I/O Board (4 ports)
• Key Specs: 4 x RS-232/485 | 115.2 kbps | Isolated | DIP switch config
• Condition: New Original.

Product Introduction

The DS200SIOBG1AAA is a high-performance serial communication board for GE’s Mark V DS200 series, used in Speedtronic turbine control systems. It provides four independently configurable RS-232 or RS-485 serial ports for connecting external devices such as operator interfaces, PLCs, printers, and data loggers.

The “AAA” suffix represents the highest-spec revision of the SIOB family. Each port supports baud rates up to 115.2 kbps with 16-byte hardware FIFOs for reliable data transfer at high speeds. Ports are optically isolated (2500 VAC) to prevent ground loops. Configuration is via DIP switches—no software setup required. Use it to add serial communication capacity to a Mark V system beyond the two ports on the SBC CPU board.

Key Technical Specifications

Key Selling Points & Differentiators

• 4 independent serial ports – Expand communication capacity beyond the SBC’s two ports. Connect HMI, printer, data logger, and PLC simultaneously.
• Software-free configuration – DIP switches set baud rate, protocol, termination, and bias. No special software or drivers. Configure before installation or in the field with a small screwdriver.
• RS-232 or RS-485 per port – Mix and match. Port 1 = RS-232 to HMI, Port 2 = RS-485 to PLC, Ports 3 & 4 = RS-232 to printers. DIP switches select mode per port.
• Optically isolated (2500 VAC) – Prevents ground loops between connected devices. Critical when connecting to equipment in different cabinets or with different power grounds.
• 16-byte FIFO per port – Reduces CPU interrupt load. Handles high baud rates (115.2 kbps) without dropping characters.
• Switchable RS-485 termination and bias – Built-in 120Ω termination resistor and 560Ω pull-up/pull-down resistors. Enable via DIP switch. No external terminator needed.
• Extended temperature range (−40°C to +70°C) – Operates in unheated enclosures and outdoor cabinets.
• QC includes 48-hour burn-in with all ports looped at 115.2 kbps – 10 million bytes per port, zero errors.
• 2-year warranty

Frequently Asked Questions (FAQ)

Q: What is the difference between the SIOB and the serial ports on the SBC (CPU) board?

Q: How do I configure a port for RS-485?
A: Set DIP switch section for that port: Switch 1 = ON (RS-485 mode). Enable termination (Switch 2) if the board is at the physical end of the bus. Enable bias (Switch 3) if no other device provides bias. See configuration guide for examples.

Q: What is the maximum cable length for RS-485?
A: 4000 ft (1200 m) at 9600 baud. At 115.2 kbps, reduce to 1000 ft (300 m). Use shielded twisted pair (Belden 9842). Enable termination at both ends of the bus.

Q: Can I use RS-232 flow control (RTS/CTS)?
A: Yes. The board supports RTS/CTS hardware flow control on RS-232 ports. Enable via DIP switch. Note: The RS-232 ports are 3-wire only (TX, RX, GND) plus RTS/CTS when enabled (5-wire total). DB9 connector pinout provided in manual.

Q: The board has 4 ports but only one DB9 connector on the front panel?
A: The board uses a 26-pin high-density female connector. A breakout cable (included) splits to 4 DB9 connectors (male). Cable length is 1 meter (3.3 ft). Keep the breakout cable away from AC power lines.

Q: How do I know if the board is working?
A: Each port has TX and yellow LEDs. TX flashes when transmitting, RX flashes when receiving. If both are dark, check: power LED (green), DIP switch settings (especially port enable switch), and cable connections.

Q: What QC tests are specific to the SIOBG1AAA?
A: Ten tests:

1. RS-232 loopback: all 4 ports at 115.2 kbps, 10 million bytes, zero errors
2. RS-485 loopback: all 4 ports at 115.2 kbps, 10 million bytes, zero errors (external loopback connector)
3. Isolation: port to backplane at 3000 VAC, leakage <0.1 mA; port to port at 1500 VAC
4. Baud rate accuracy: all rates within ±1%
5. FIFO test: full 16-byte transmit/receive at 115.2 kbps
6. Flow control: RTS/CTS and XON/XOFF verified
7. RS-485 termination: 120Ω ±5% when enabled
8. RS-485 bias: 560Ω ±5% pull-up to 5 V, 560Ω pull-down to ground
9. LED test: all TX/RX LEDs flash under software control
10. Burn-in: 72 hours at +65°C, all ports at 115.2 kbps continuous loopback

Q: What shipping protection?
A: Anti-static bag, ESD foam cradle, double-wall box with “ESD SENSITIVE,” “FRAGILE” labels. Breakout cable (26-pin to 4 x DB9) in separate bag. DIP switch configuration guide laminated. Spare termination resistors included. Each board ships individually.

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