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  • 15 марта 2011 г.
  • 1014 Слова
MicroLink

TM

HART Protocol Modem - RS-232 Interface

101-0005

Installation Operation & Specifications Manual

General Description
The MicroLink 101-0005 is an RS-232 serial port to HART® device interface. It provides the hardware interface between Highway Addressable Remote Transducer devices (HART) and a computer with an RS-232 serial port, such as a Windows® PC. The rugged designmakes MicroLink an ideal choice for field engineers and technicians who service HART devices in an industrial environment. MicroLink is compatible with all registered HART devices and all leading HART configuration and monitoring software that us an RS-232 serial port for the interface. For a HART modem with a USB interface, Microflex offers the 101-0007.

620-0001 R4 © Microflex LLC 2003-2010 Connecting to the HART Device
Connect the two mini-clips to the HART device or HART loop. MicroLink provides electrical isolation between the HART loop and the PC. It is safe to ignore grounding and polarity issues when making the HART connections. The HART protocol requires a loop resistance between 230 and 600 ohms, typically 250 ohms. Refer to your equipment installation instructions fordetails on connecting a HART master or configuration device to the loop.

Software Setup
Make sure your HART software is set to use the same COM port that the MicroLink modem is connected to. There are no hardware settings required by the MicroLink modem and modem power is provided by the RS-232 port handshake lines. All other settings, such as BAUD rate, are taken care of by your HART software.Safety Considerations
Conformity in accordance with Part 2, and Part 15, Subparts A and B of the Federal Communications Rules and Regulations, and ICES-003 of the Industry Canada standards. This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interferencereceived, including interference that may cause undesired operation. Changes or modifications not expressly approved by Microflex could void the user’s authority to operate this equipment. Emissions EN55022: 1998 Electrostatic Discharge EN61000-4-2: 1995, A1: 1998, A2: 2001 Radiated Immunity EN 61000-4-3: 2002 Safety Compliance EN 60950-1: 2002

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This device does not have protection fromover-voltages which may exist on RS-232 ports of computers and relies on the protection existing in a host computer. This device is not intended for connection to the phone line through the appropriate converters and shall not be connected to telecommunication lines because it has no protection against over-voltages which may exist in these lines. The user shall ensure the protection of the operatorfrom access to areas with hazardous voltages or hazardous energy in their equipment. The user shall ensure that the connection port of the field device and the modem is separated at least by basic insulation from any primary circuit existing in the field device.

MicroLink Specifications
Enclosure
Molded Buna-N 90 Durometer Rubber with Stainless Steel Cover Weight..............................................................................5 ounces Modem Dimensions ................................... 1.75” x 2.375” x 0.625”

RS-232 Serial Port
Connector .................................................... 9-Pin Female D-Shell Cable Length ........................................................6 feet (3 Meters) (Can be extended up to 25 feet) Receive Data......................................................................... Pin 2 Transmit Data......................................................................... Pin 3 Data Terminal Ready (DTR) ................................................... Pin 4 Ground ................................................................................... Pin 5 Request To Send (RTS), Selects Transmit/Receive .............. Pin 7...
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