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Key Technical Specifications
This GE DS200LDCCH1A DS200LDCCH1AKA board operates from a 24V DC power supply. It provides two serial communication ports for system networking. The unit measures 20 cm in length, 14 cm in width, and 3.5 cm in height. Its total weight equals 0.5 kg without any packaging materials.
The GE DS200LDCCH1A DS200LDCCH1AKA includes one RS-232 port and one RS-485 port. Additionally, it features one Ethernet port for high-speed data transfer. A single 6-pin terminal block connects the DC power input. The board contains 1 processor, 2 UARTs, 1 Ethernet controller, 4 optocouplers, and 16 resistors.
| Parameter | Value |
|---|---|
| Power Supply | 24V DC ±10%, 200mA |
| RS-232 Port | 1 (DB9, up to 115.2 kbps) |
| RS-485 Port | 1 (terminal block, up to 115.2 kbps) |
| Ethernet Port | 1 (RJ45, 10/100 Mbps) |
| Dimensions (L x W x H) | 20 cm x 14 cm x 3.5 cm |
| Weight | 0.5 kg |
| RS-485 Termination | Jumper selectable (120 ohm) |
| Protocol Support | Modbus RTU, Modbus TCP |
| Power Connector | 6-pin terminal block |
| Processor | 1 unit (32-bit, 100 MHz) |
| UARTs | 2 units (16550 compatible) |
| Ethernet Controller | 1 unit |
| Optocouplers | 4 units (RS-485 isolation) |
| Resistors | 16 units |
| Capacitors | 12 units |
| Energy Storage | 100 µF at 35V |
GE DS200LDCCH1A DS200LDCCH1AKA stores energy using one electrolytic capacitor. This capacitor provides 100 µF at 35V rating for transient filtering. Consequently, the board maintains communication during 20 millisecond power interruptions. Therefore, data packets remain intact through brief voltage sags.
Design and Integration
Both the GE DS200LDCCH1A and DS200LDCCH1AKA versions share identical communication circuitry. These boards use four-layer PCB construction with isolated RS-485 lines for noise immunity. Consequently, the GE DS200LDCCH1A DS200LDCCH1AKA operates reliably from -10°C to +55°C ambient temperature.
For installation, you need M3 screws for the four mounting holes. The board draws 150 mA typical current from the 24V DC supply. The RS-485 port supports 32 nodes on a single network segment. We recommend using shielded twisted-pair cables for all serial connections.
Practical Application
This communications board connects turbine controls to plant DCS systems and HMIs. It translates Modbus RTU requests from legacy equipment to Modbus TCP. The GE DS200LDCCH1A DS200LDCCH1AKA also logs communication errors for diagnostics. Therefore, it bridges modern Ethernet networks with older serial field devices.