Description

Honeywell FS-DCOM-232/485 Communication Interface Module

Configured for serial communication interface conversion in the Honeywell Safety Manager system, the Honeywell FS-DCOM-232/485 (FS-DCOM-232/485 Communication Interface Module) provides direct electrical connection between Safety Manager control processors and RS232, RS485, or RS422 field communication networks.

Hardware Specifications

Parameter	Specification
Model	FS-DCOM-232/485
Brand	Honeywell
Product Type	Communication Interface Module
Origin	USA
Weight	0.14 kg
Dimensions	11 x 7 x 6 cm (estimated shipping size)
Power Consumption	Supplied by connected Control Processor(s), input 5 V DC +/-5%, max 500 mA
System Compatibility	Honeywell Safety Manager
Communication Ports	1 x RS232 output, 2 x RS485/422 output
RS232 Output Level	According to EIA/TIA-232 levels
RS232 Baud Rate	0-250 kBaud
RS485/422 Output Level	According to EIA/TIA-485-A levels
RS485/422 Baud Rate	0-2 MBaud
Input Voltage	5 V DC +/-5%
Input Current	Maximum 500 mA
DIN Rail Compatibility	TS32 / TS35 x 7.5
Used Rail Length	117 mm (4.6 in)
Mounting Type	Universal snap-in DIN EN rail mounting
Approvals	CE, TUV, UL, FM

Safety Manager Serial Communication Interface

The FS-DCOM-232/485 provides serial communication access for Honeywell Safety Manager controllers through RS232, RS485, and RS422 physical interfaces. The module receives power directly from one or two redundant Control Processor units, therefore separate supply wiring is not required.

Furthermore, the communication interface supports EIA/TIA electrical signaling standards and enables connection to external communication devices through shielded field cables. The module uses a 2-pin earth connector to connect internal cable shields and field connector housings to cabinet earth.

For process control networks using Honeywell safety architectures, communication modules must maintain correct grounding and shielding practices. The FS-DCOM-232/485 installation method supports DIN EN rail mounting and controlled cabinet wiring environments.

Process Communication and Isolation Characteristics

The Honeywell FS-DCOM-232/485 is designed for Safety Manager communication networks where serial protocol transmission requires defined electrical interface levels. Unlike analog process modules, this unit performs digital serial signal handling and does not provide 4-20 mA HART loop processing, FOUNDATION Fieldbus, or Profibus PA field interface functions.

However, the module follows Honeywell control system communication requirements by providing defined RS232 and RS485/422 signal interfaces. Proper cable shielding and earth connection reduce communication disturbances caused by cabinet noise coupling and external electromagnetic interference.

Frequently Asked Questions

Q: Does the FS-DCOM-232/485 require an independent power supply connection?
A: No. The module receives power from the connected Safety Manager Control Processor(s). Separate field power wiring is not required.

Q: Which communication standards are supported by the FS-DCOM-232/485?
A: The module supports RS232 according to EIA/TIA-232 levels and RS485/422 according to EIA/TIA-485-A levels.

Q: How should the communication interface be grounded during installation?
A: The supplied 2-pin earth connector must connect the module earth point to cabinet earth. This connection bonds cable shields and field connector housings to the grounding system.

Field Installation Guidelines

• Install the FS-DCOM-232/485 on compatible TS32 or TS35 x 7.5 DIN EN rails using the integrated snap-in mounting mechanism.
• Connect the earth terminal before communication cable installation to provide proper shield bonding.
• Use communication cables specified for the Safety Manager system and maintain shield continuity through cabinet wiring.
• Separate serial communication cables from high-current power conductors to reduce electromagnetic interference.
• Verify RS232, RS485, or RS422 wiring polarity before applying system power.
• Confirm that connected Control Processor units provide the required 5 V DC module supply through the system connection.
• Check communication parameters, including baud rate settings, before commissioning the serial network.

Specifications

• Brand: Honeywell

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems