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Affirmed by
BS EN ISO 9001
Declaration of Conformity
Certificate No. FM 15094
Amplicon products are produced in the United Kingdom under a quality system
approved by the British Standards Institution
Magic 485F25 & F9
RS 232-485
AUTOMATIC
RS 485
TRANSMITTER
ENABLE
This Instruction Manual is supplied with the Magic 485F Adapter to provide the user with sufficient information to
utilise the purchased product in a proper and efficient manner. The information contained has been reviewed and is
believed to be accurate and reliable, however Amplicon Liveline Limited accepts no responsibility for any
problems caused by errors or omissions. Specifications and instructions are subject to change without notice.
Magic 485F Instruction Manual Part Nº 859 933 74 Issue A3
© Amplicon Liveline Limited
Prepared by James Chisholm
Approved for issue by A.S. Gorbold, Operations Director
Magic 485F Adapter
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Summary of Contents for Amplicon Magic 485F25
- Page 1 The information contained has been reviewed and is believed to be accurate and reliable, however Amplicon Liveline Limited accepts no responsibility for any problems caused by errors or omissions. Specifications and instructions are subject to change without notice.
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Page 2: Declaration Of Conformity
DECLARATION OF CONFORMITY AMPLICON LIVELINE LIMITED CENTENARY INDUSTRIAL ESTATE HOLLINGDEAN ROAD BRIGHTON BN2 4AW UK We declare that the product(s) described in this Instruction Manual perform in conformity with the following standards or standardisation documents: Electro Magnetic Compatibility (EMC): EN55022:1995... - Page 3 MAGIC 485F INTRODUCTION General Description The Magic 485F ‘MAGIC converter’ transfers data between RS232 & RS485 networks. The unit is ‘magic’ in that, unlike conventional converters, it does not require the RTS signal to control RS485 transmitter turnaround. Instead the RS485 transmitter is enabled whenever a valid start bit is detected on the RS232 input.
- Page 4 Before returning the goods, please request an individual RMA number by contacting Amplicon Technical Support by telephone or fax on the above numbers. Give the reason for the return and, if the goods are still under warranty, the original invoice number and date.
- Page 5 Please mark the RMA number on the outside of the packaging to ensure that the package is accepted by the Goods Inwards Department. Address repairs to: Customer Services Department AMPLICON LIVELINE LIMITED Centenary Industrial Estate Brighton, East Sussex BN2 4AW...
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Page 6: Installation Instructions
INSTALLATION INSTRUCTIONS Requirements of Host Equipment The Magic 485F25 Adapter can be plugged into any device with an RS232 port terminating in a 25 way 'D' type male connector (DB-25). If the host device is equipped with a 25 way connector, it is normally male, and the Magic 485F25 Adapter can be directly plugged into this port. - Page 7 Configuration of Magic 485F Adapter Options Configuration of the options is undertaken by the setting of links and switches on the baseboard. For convenience, the plastic case is supplied in two parts and should only be clipped together when any configuration changes have been made. Operational tests can be performed before the case is fitted.
- Page 8 Configurable Options Selection of DCE or DTE (485F25 only) The unit, as supplied from the factory, is configured to interface directly to a DTE i.e. a PC or dumb terminal . In the majority of applications this will be correct. This is set by the Jumpers J1 to J2.
- Page 9 Transmitter Turnaround Delay By the nature of the operation of the unit there will be a time delay in the switching of the unit from transmit to receive. This time can be fine tuned to the particular installation and the length of the cable run, resulting in quicker operation.
- Page 10 100 mA for each 485 Adapter that it supplies. Within this constraint, as many 485 Adapters as are required can be fed from a single supply. The Amplicon Mains adapter meets this requirement and the U.K. version is available under order code 919 135 69. See paragraph 2.4.1 for information on connecting this mains adapter to the Magic 485F terminals.
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Page 11: Technical Specification
TECHNICAL SPECIFICATION The technical characteristics of the Magic 485F Adapter are in accordance with the following electrical and physical specifications. Except where otherwise noted, all specifications are typical at 25º C Electrical Specification Supply Voltage +5.0 VDC to +12.0 VDC from external supply via terminal strip Supply Current 50 mA plus current drawn by output loads...
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