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MM485REP

RS485 REPEATER

 

The MM485REP unit is a bi-direction serial repeater unit used to convert 2 or 4 wire RS485 (RS422) twisted pair data communications signals to another isolated 2 or 4 wire RS485 (RS422) twisted pair cable. Each port is fully configurable via DIP switches for baud rate, parity, data bits, stop bits and full or half duplex modes. The repeater can be used to extend a RS485 network up to a further 1000 metres. The isolation also prevents ground loops between different parts of the network. 

Standard features of the repeater are: 

·         2 (RS485) or 4 (RS422)  Wire Operation.

External wire links are required to select 2 wire (RS485) mode. 

·         Baud Rate, Data Bits, Stop Bits, Parity and Half or Full Duplex Mode.

Each port is configurable via an 8way dipswitch. 

·         Signal Isolation.

      The converter module isolates the RS485/RS422 and RS485/RS422 signals to prevent ground loops between remote devices. 

·         DIN Rail Mount.

      The converter module plugs directly on to a DIN rail. 

SPECIFICATIONS

POWER REQUIREMENT:                 200 - 260VAC 50/60Hz. – LED POWER indication

PORT TX/RX INDICATORS:            1 x TX led and 1 x RX led per port.

TRANSMISSION MEDIUM:              2 OR 4 Wire twisted pair cable.

TRANSMISSION DISTANCE:           Up to 1 Km.

BAUD RATE:                                   Selectable per port – 1200, 2400, 4800, 9600, 19200 and 38400.  

DATA BITS:                                    Selectable per port - 7 or 8 data bits

STOP BITS:                                    Selectable per port – 1 or 2 stop bits

PARITY BITS:                                 Selectable per port  - none, even or odd parity

ISOLATION:                                   Transformer/OptoCoupler  - 1500VACrms

OPERATING TEMPERATURE:         -20°C to + 80°C.

DIMENSIONS:                                 105mm (HIGH) X 70mm (WIDE) X 60mm (DEEP)
WIRING

 

***NOTE:  120ohm termination resistors must be placed at the ends of the RS422 / RS485 twisted pair cables for correct operation ****.

 

SWITCH SETTINGS

SWITCH SW1  -  RS422/RS485 PORT 1 SETUP

SWITCH SW2  -  RS422/RS485 PORT 2 SETUP

ORDER CODES

Order Code                          Description 

MM485REP                   RS485 (RS422) REPEATER

Other products available in this product range:

Order Code                          Description

MMINTCONV                 RS232 /  RS485(RS422) INTELLIGENT CONVERTER

MM232OPTO/SMA        RS232 / MULTI MODE FIBRE OPTIC CONVERTER WITH SMA CONNECTOR 850nm

MM485OPTO/SMA        RS485 / MULTI MODE FIBRE OPTIC CONVERTER WITH SMA CONNECTOR 850nm

 

 

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