FC-DCOM-485 V1.1

The Honeywell FC-DCOM-485 V1.1 is a communication interface module that provides RS485/422 signal output with transmission levels specified according to EIA/TIA-485-A. It supports baud rates from 0 to 2 MBaud and multiple transmission formats, including transparent, Manchester, FM0, and FM1. The module receives 5 V DC power from the control processor(s) and mounts on TS32 or TS35 x 7.5 DIN EN rails.

Technical Specifications

Parameter	Specification
Model	FC-DCOM-485 V1.1
Brand	Honeywell
Module Type	RS485/422 Communication Interface Module
Output Signal Standard	EIA/TIA-485-A levels
Baud Rate	0-2 MBaud
Transmission Formats	Transparent, Manchester, FM0, FM1
Input Voltage	5 V DC +/-5%
Input Current	Max. 500 mA
Power Source	Control Processor(s)
Dimensions	110 x 70 x 61 mm
DIN EN Rail Types	TS32 / TS35 x 7.5
Required Rail Length	117 mm (4.6 in)
Weight	0.30 lbs
Approvals	CE; TUV and UL pending, according to the supplied data

Communication and Signal Characteristics

The FC-DCOM-485 provides an RS485/422 output interface with electrical levels specified by EIA/TIA-485-A. Its supported transmission formats include transparent transmission and the Manchester, FM0, and FM1 encoding methods. The selected format and baud rate must match the connected equipment and the intended communication configuration.

The specified baud-rate range extends to 2 MBaud. The actual achievable communication rate depends on the connected devices, transmission medium, wiring topology, and protocol or encoding requirements.

Power Supply and Mounting

The module requires a 5 V DC supply within a +/-5% tolerance, with a maximum input current of 500 mA. The supplied documentation identifies the control processor(s) as the power source; a separate external power input is not specified.

The module occupies 117 mm of DIN rail length and supports TS32 and TS35 x 7.5 rail types. The earth terminal has separate dimensions from the main module body and should be accounted for when checking the physical installation arrangement.

Frequently Asked Questions

Q: What communication formats does the Honeywell FC-DCOM-485 support?

A: The module supports transparent transmission, Manchester, FM0, and FM1 formats, with a specified baud-rate range of 0 to 2 MBaud. The required format and rate must match the connected equipment.

Q: What power supply does the FC-DCOM-485 require?

A: It operates on 5 V DC +/-5% and draws a maximum of 500 mA. The specified supply comes from the control processor(s).

Q: Which DIN rails are compatible with this module?

A: The supplied specifications list TS32 and TS35 x 7.5 DIN EN rails, with a required rail length of 117 mm.

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