The HONEYWELL 05701-A-0282 is a MODBUS Interface Module for the Honeywell/SIEGER System 57 gas detection platform. Honeywell’s System 57 documentation specifically identifies this part as the RS485/RS422 MODBUS Interface Module, used to provide serial MODBUS communication between a System 57 rack and external supervisory or control equipment.

The module is installed as part of the System 57 MODBUS interface upgrade and works with the System 57 Engineering Card. The original Honeywell documentation lists EPROM 05701-A-0385 and an HN6264ALP RAM expansion as associated components of the interface kit.

Product Parameters

The 05701-A-0282 is the RS485/RS422 version; Honeywell identifies 05701-A-0287 separately as the RS232 version, so the two should not be treated as interchangeable without checking the existing system interface.

Recommended Models

1. HONEYWELL 05701-A-0287 — System 57 MODBUS Interface Module, RS232
2. HONEYWELL 05701-A-0385 — System 57 Engineering Card MODBUS upgrade EPROM
3. HONEYWELL 05701-A-0284 — System 57 Catalytic Sensor Drive Module
4. HONEYWELL 05701-A-0288 — System 57 Family PCB Card
5. HONEYWELL 05701-A-0301 — System 57 Single Channel Control Card
6. HONEYWELL 05701-A-0302 — System 57 Control / Interface Module
7. HONEYWELL 05701-A-0325 — System 57 DC Input Card
8. HONEYWELL 05701-A-0326 — System 57 Field Interface Card
9. HONEYWELL 05701-A-0327 — System 57 Relay Card, Double SPCO
10. HONEYWELL 05701-A-0328 — System 57 Relay Card
11. HONEYWELL 05701-A-0283 — System 57 Control Card
12. HONEYWELL System 57 Engineering Card — System controller and MODBUS interface host
13. HONEYWELL System 57 Rack — Gas detection and alarm monitoring rack
14. HONEYWELL System 57 Input Module — Gas detector signal interface module
15. HONEYWELL System 57 Relay Interface Module — Alarm and control output module