Sixnet DC modem

Perfect for Rugged Environments

SIXNET DC powered industrial modems are the perfect communication link to the most remote devices or off-site PLCs. These modems operate between -30C and 70C and can stand up to the worst conditions while still reliably bridging your communications gap.

SIXNET industrial modems are powered by a 10-30 VDC source in any industrial enclosure, it is no longer is it necessary to take up valuable space with a cumbersome AC adapter in the control cabinet. The modem can either be panel or DIN rail mounted as required.

  • Remote access to PLC or field instrument

  • Replace an existing 300, 1200, 2400 or 9600 baud modem

  • Industrially hardened modem. Rated for -30 to 70C operation and Class I, Div 2 hazardous locations

  • Powered directly from any 10-30 VDC source

  • DIN rail or flat panel mounting. Convenient installation in any enclosure

  • Five year ISO 9001 certified support policy

Load VT manual compressed EXE file

Telephone Line Specifications

Max Data Rate

33.6 kbps (V.34)


V.34, V.32 bis, V.32, V.22, V.22A/B, V.23, V.21, Bell 212A and 103

Data Compression

V.42 bis MNP 5

Error Correction

V.42 MNP 2-4

Max Fax-Modem Rate

14.4 kbps

Fax-Modem Capabilities

Group 3 (V.33, V.17, V.29, V.27 ter, V.21 channel 2)

Ringer Equivalent


Line Jack


Phone Jack


RS232 Specifications

Max RS232 Rate

115.2 kbps

RS232 Signal Support


RS232 Connector

DB9 female

Command Set

All standard AT and S register commands, including Class 1 and Class 2 Fax commands

General Characteristics

Input Power

10-30 VDC

Input Current

65 ma @ 24 VDC (typical)

Flammability (module plastic)

UL 94V-0 materials


FCC part 68 (Reg. #5KNUSA-32535-MM-E), Industry Canada (Cert. #29918926A), Contact SIXNET for other countries

Electrical Safety

UL 508, CSA C22.2/14; EN61010-1 (IEC1010),CE

EMI Emissions

FCC part 15, ICES-003, Class A; EN55022, CE

EMC immunity

EN50082-1 (IEC801-2, 3, 4), CE

Surge withstand

IEEE-472 (ANSI C37.90)


IEC68-2-6 and IEC68-2-34

Hazardous locations

UL 1604, CSA C22.2/213-M1987, (Class 1, Div 2, Groups A, B, C, D)

Operating Temperature

-30 to 70C

Storage Temperature

-40 to 85C


5% to 95% RH (non-condensing)


DIN rail or panel mount


3.23W x 4.75L x 1.35H inches (8.2W x 12.1L x 3.4H cm)

DIN rail mounting

The VT-MODEM  will snap onto standard DIN rail (DIN EN 50022) or may be attached to a flat panel using #6 or #8 screws. For DIN rail mounting, hook the top, rear of the modem onto the top edge of the DIN rail. Using a small flat head screwdriver, pull down on the spring-loaded tab on the bottom of the modem and push the modem back against the rail. Release the spring-loaded tab locking the modem to the bottom edge of the DIN rail. Reverse these steps to remove the modem.

If the telephone company requests information on what equipment is connected to their lines, inform them of:

A) The telephone number that it is connected to,
B) The Ringer Equivalence Number 0.3
C) The USOC jack required RJ11, and

D) The FCC Registration Number 5KNUSA-32535-MM-E

Items (b) and (d) are indicated on the label. The ringer equivalence number (REN) is used to determine how many devices can be connected to your telephone line. In most areas, the sum of the RENs of all devices on any one line should not exceed five (5.0). If too many devices are attached, they may not ring properly.

see PDF specs page

see other Sixnet VT-modem pages



301-924-7400 EXT 25

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