Overview
Configured for serial data communication between RS232 and RS485/422 interfaces, the Honeywell FS-DCOM-232/485 (FS-DCOM-232/485 Communication Interface Module) provides physical interface conversion and signal transmission within a Honeywell control system. It operates from a 5 V DC supply and provides one RS232 output port plus two RS485/422 output ports.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | FS-DCOM-232/485 |
| Brand | Honeywell |
| Product Type | Communication Interface Module |
| Origin | USA |
| Weight | 0.14 kg |
| Dimensions | Estimated shipping size: 11 x 7 x 6 cm |
| Power Consumption | Max. 2.5 W at 5 V DC and 500 mA |
| Input Voltage | 5 V DC +/-5% |
| Input Current | Max. 500 mA |
| RS232 Output | 1 x port, EIA/TIA-232 signal levels |
| RS232 Baudrate | 0-250 kBaud |
| RS485/422 Output | 2 x ports, EIA/TIA-485-A signal levels |
| RS485/422 Baudrate | 0-2 MBaud |
| DIN EN Rail | TS32 / TS35 x 7.5 |
| Used Rail Length | 117 mm (4.6 in) |
| Approvals | CE, TUV, UL, FM |
| Tariff Code | 8537101190 |
| Place of Shipment | Xiamen, China |
Serial Communication Characteristics
The FS-DCOM-232/485 separates serial communication interfaces by electrical signaling standard. The RS232 port follows EIA/TIA-232 levels, while the two RS485/422 outputs follow EIA/TIA-485-A levels.
The RS232 interface supports baud rates from 0 to 250 kBaud. In comparison, each RS485/422 interface supports up to 2 MBaud. Therefore, the selected interface determines the applicable electrical signaling range and communication speed.
The module requires a 5 V DC supply with a +/-5% tolerance. Its maximum specified input current is 500 mA, corresponding to a maximum calculated supply demand of 2.5 W.
Frequently Asked Questions
Q: How many serial output ports does the FS-DCOM-232/485 provide?
A: It provides one RS232 output port and two RS485/422 output ports.
Q: What signaling standards does the module use?
A: The RS232 port uses EIA/TIA-232 levels. The RS485/422 ports use EIA/TIA-485-A levels.
Q: What power supply does the module require?
A: The module requires 5 V DC +/-5% and specifies a maximum input current of 500 mA.
Field Installation Guidelines
Mount the module on a compatible TS32 or TS35 x 7.5 DIN EN rail and observe the specified used rail length of 117 mm.
Connect the 5 V DC supply with correct polarity and verify that the supply remains within the specified +/-5% tolerance. Keep serial communication wiring separated from high-voltage and high-current conductors to reduce electrical interference.
For RS485/422 wiring, maintain consistent signal-pair routing and follow the control system’s applicable termination and grounding practices. For RS232 wiring, use the interface pinout and cable configuration specified by the associated system documentation.
Before commissioning, verify the selected communication interface, baud rate, cable connections, and signal reference. Do not exceed the specified communication baud-rate ranges.
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