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1785-KE | Allen-Bradley PLC-5 DH+/RS-232-C Communication Interface Module
- Regular price
- $1,034.00
- Sale price
- $1,034.00
- Regular price
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Product Description P/N: 1785-KE
Description
The Allen-Bradley 1785-KE is a communication interface module designed to bridge asynchronous RS-232-C devices with a Data Highway Plus (DH+) network. It enables industrial controllers and intelligent serial equipment to exchange data across distributed automation systems. This module is commonly used in PLC-5 installations where legacy devices must communicate reliably through a DH+ network infrastructure. Its robust design ensures dependable operation in demanding industrial communication environments.
Technical Specifications
| Condition | New / Never Used Surplus |
| Brand | Allen-Bradley |
| Category | Industrial Communication Modules |
| Part Number | 1785-KE |
| Subcategory | DH+ to RS-232-C Communication Interface |
| Supported Networks | Data Highway Plus (DH+), Asynchronous RS-232-C |
| DH+ Data Rate | 57.6 kbps |
| RS-232-C Baud Rates | Selectable from 110 to 19,200 baud |
| Serial Mode | Full-duplex or half-duplex |
| RS-232 Connector | 15-pin female D-shell |
| DH+ Connector | 3-terminal block for trunkline/drop-line |
| Switch Assemblies | SW1 (serial link options), SW2 (node address), SW3 (communication rate), SW4 (reserved) |
| Mounting Style | 1771 I/O rack single-slot installation |
| Backplane Current Draw | ~1.2 A |
| Max RS-232-C Cable Length | Up to approx. 50 ft (device-dependent) |
| Typical Applications | Serial device integration, operator terminals, printers, data collection devices |
| Function | Communication bridging, protocol conversion, network integration |
Information About 1785-KE
The 1785-KE belongs to the Allen-Bradley PLC-5 communication module family and provides a dedicated interface between a DH+ network and an RS-232-C device. The module supports both full-duplex and half-duplex serial modes, allowing flexibility for various protocols and equipment types. It incorporates a 15-pin asynchronous serial connector for RS-232-C communication and a 3-terminal DH+ connection for network linking. On the DH+ network, the module operates at 57.6 kbps, while the serial port supports multiple baud rates selectable via onboard DIP switches. The 1785-KE includes four configurable switch assemblies for link mode, baud rate, node addressing, and communication behaviors. Designed to mount in a single slot of a 1771 I/O chassis, it draws power directly from the backplane and integrates seamlessly with PLC-5 controllers. This module is often used to connect operator terminals, printers, barcode readers, modem-equipped devices, and other intelligent serial peripherals into a DH+ environment.
Key Features:
- DH+ to RS-232-C Interface: Links intelligent asynchronous serial devices to DH+ networks.
- Full/Half-Duplex Support: Accommodates a wide range of serial communication requirements.
- Baud Rate Selection: RS-232-C port supports multiple selectable data rates from 110 to 19,200 baud.
- DH+ Network Speed: Operates on the DH+ network at 57.6 kbps.
- RS-232-C Connector: 15-pin female D-shell port for serial communication.
- DH+ Terminals: 3-screw terminal block for trunkline or drop-line network connections.
- Switch Assemblies: Four DIP switch banks for link configuration, node address, and baud rate selection.
- Mounting: Installs in a single slot of the 1771 I/O chassis.
- Backplane Power: Draws approximately 1.2 A from the I/O rack backplane.
- Device Compatibility: Supports printers, terminals, modems, operator interfaces, and intelligent serial devices.
- Distance Capability: Supports direct RS-232-C cable distances up to about 50 ft, depending on configuration.
The 1785-KE provides reliable and flexible communication bridging essential for PLC-5 networked automation systems.
Description
The Allen-Bradley 1785-KE is a communication interface module designed to bridge asynchronous RS-232-C devices with a Data Highway Plus (DH+) network. It enables industrial controllers and intelligent serial equipment to exchange data across distributed automation systems. This module is commonly used in PLC-5 installations where legacy devices must communicate reliably through a DH+ network infrastructure. Its robust design ensures dependable operation in demanding industrial communication environments.
Technical Specifications
| Condition | New / Never Used Surplus |
| Brand | Allen-Bradley |
| Category | Industrial Communication Modules |
| Part Number | 1785-KE |
| Subcategory | DH+ to RS-232-C Communication Interface |
| Supported Networks | Data Highway Plus (DH+), Asynchronous RS-232-C |
| DH+ Data Rate | 57.6 kbps |
| RS-232-C Baud Rates | Selectable from 110 to 19,200 baud |
| Serial Mode | Full-duplex or half-duplex |
| RS-232 Connector | 15-pin female D-shell |
| DH+ Connector | 3-terminal block for trunkline/drop-line |
| Switch Assemblies | SW1 (serial link options), SW2 (node address), SW3 (communication rate), SW4 (reserved) |
| Mounting Style | 1771 I/O rack single-slot installation |
| Backplane Current Draw | ~1.2 A |
| Max RS-232-C Cable Length | Up to approx. 50 ft (device-dependent) |
| Typical Applications | Serial device integration, operator terminals, printers, data collection devices |
| Function | Communication bridging, protocol conversion, network integration |
Information About 1785-KE
The 1785-KE belongs to the Allen-Bradley PLC-5 communication module family and provides a dedicated interface between a DH+ network and an RS-232-C device. The module supports both full-duplex and half-duplex serial modes, allowing flexibility for various protocols and equipment types. It incorporates a 15-pin asynchronous serial connector for RS-232-C communication and a 3-terminal DH+ connection for network linking. On the DH+ network, the module operates at 57.6 kbps, while the serial port supports multiple baud rates selectable via onboard DIP switches. The 1785-KE includes four configurable switch assemblies for link mode, baud rate, node addressing, and communication behaviors. Designed to mount in a single slot of a 1771 I/O chassis, it draws power directly from the backplane and integrates seamlessly with PLC-5 controllers. This module is often used to connect operator terminals, printers, barcode readers, modem-equipped devices, and other intelligent serial peripherals into a DH+ environment.
Key Features:
- DH+ to RS-232-C Interface: Links intelligent asynchronous serial devices to DH+ networks.
- Full/Half-Duplex Support: Accommodates a wide range of serial communication requirements.
- Baud Rate Selection: RS-232-C port supports multiple selectable data rates from 110 to 19,200 baud.
- DH+ Network Speed: Operates on the DH+ network at 57.6 kbps.
- RS-232-C Connector: 15-pin female D-shell port for serial communication.
- DH+ Terminals: 3-screw terminal block for trunkline or drop-line network connections.
- Switch Assemblies: Four DIP switch banks for link configuration, node address, and baud rate selection.
- Mounting: Installs in a single slot of the 1771 I/O chassis.
- Backplane Power: Draws approximately 1.2 A from the I/O rack backplane.
- Device Compatibility: Supports printers, terminals, modems, operator interfaces, and intelligent serial devices.
- Distance Capability: Supports direct RS-232-C cable distances up to about 50 ft, depending on configuration.
The 1785-KE provides reliable and flexible communication bridging essential for PLC-5 networked automation systems.