S2USB485 Interface
Overview
The S2USB485 (with 2 meter USB cable) is a USB to full-duplex RS-232 and half-duplex RS-485 serial converter integrated into a single device. In essence the S2USB485 is a single USB serial port that has two electrical interfaces available to it (RS-232 and RS-485). Either interface can be used without the need to set jumpers or change dip switch settings
The S2USB485 can be used as a replacement to the Johnson Controls MM-CVT101 (RS-232 to N2 Bus) / CVTPro100 converter for those computers or laptops that have a USB interface. In addition to direct support for Johnson Controls software (Metasys, HVAC Pro, etc), the S2USB485 provides the following improved features and functionality:
-
USB interface and so is supported by the latest laptops and operating systems
-
Does not require an external power supply. The device is entirely USB interface powered
-
Incorporates both a RS-232C and N2 (RS-485) bus interface so that multiple converters are not necessary.
-
N2 Bus communication is supported under Windows 2000 and Windows XP directly.
-
Transmit and Receive Indicators
-
N2 Bus flow control internally controlled (i.e. no jumpers or resistors to add/modify)
-
N2 Bus has end of line termination (EOL) enabled or disabled by an internal slide switch
- Designed and Manufactured in Canada using Industrial grade components
-
Note: ZoneBus support via the JCI CVTPro100 is not available at this time.
- ROHS Compliant
-
New Version (July 2008) now has enhanced overvoltage protection and internal auto reset-able thermal fuses in the event of high voltages present on the RS485 / N2 bus
- New Version (July 2008) includes enhanced mechanical rigidity of the RS485/N2 bus connector
-
New Version (July 2008) includes OBD (On-Board Diagnostics) of the RS485/N2 Bus. OBD allows our S2N2Scan software to electrically analyze (voltage measuring) the RS485/N2 bus and indicate electrical issues to the user.
- As of July 2008, the anchored cable version of the S2USB485 (part number S2USB485-JC-C) has been reluctantly discontinued do to the quality issues with our anchored cable manufacturer. Only the S2USB485-JC-B is now offered with or without the required USB cable (a Type A to Type B).
- New Version (July 2008) Pricing has been maintained for this enchanced S2USB485 version. The included cable version is priced the same as the old anchored cable version
- Vista Tested and Compatible
- Tested and compatible with JCI's HVACPro and JCI's FX CommPro
- Windows 7 Drivers will be available on 8/1/2010 at which time we will also be releasing a specific Windows 7 installation document, as Microsoft has changed its Driver installation procedure somewhat.
Specifications
Part Numbers:
S2USB485-JC-CB
A S2USB485-JC-B but includes the required USB cable
Cable: 2 Metre (6 feet) USB 2.0 Type A to Type B Cable
Power Requirements:
USB Powered, maximum of 225 mA
Environment:
Temperature 0 C to +60 C
Humidity: 10 - 95 % RH (non-condensing)
Dimensions:
2.6”L x 2.6”W x 1.1” H
6.6cm L x 6.6cm W x 2.8cm H
Operating Systems:
Windows 7 (8/1/2010)
Windows Vista
Windows XP
Windows 2000
Win 98 (upon request)
Data Rates:
RS-232 - 300 to 1 MBaud
RS-485 - 300 to 3 MBaud
Data Interfaces:
USB
USB 1.1/2.0 Compatible
RS-485
Half Duplex, 1 Unit Load
3-Pin Connector
RS-232C
DB-9 Male Connector
S2USB485-JC-B Technical Information: