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©

W

estermo 

Teleindustri 

AB

MDW-45

www.westermo.com

User Guide

6617-2203

Converter 

RS-232 – RS-422/485

Содержание MDW-45

Страница 1: ...Westermo Teleindustri AB MDW 45 www westermo com User Guide 6617 2203 Converter RS 232 RS 422 485...

Страница 2: ...of this document Westermo reserves the right to revise this document or withdraw it at any time without prior notice Under no circumstances shall Westermo be responsible for any loss of data or incom...

Страница 3: ...it uses convection cooling To avoid obstructing the airflow around the unit follow the spacing recommendations see Installation section Care recommendations Follow the care recommendations below to ma...

Страница 4: ...be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increas...

Страница 5: ...CTS 9 Not connected RS 422 485 Position Direction description Input Output values 1 In R line RS 422 Umax 5 Vpk Imax 250 mA Data rate 1 2 115 2 kbit s 2 In R line RS 422 3 In Out T line RS 422 485 4 I...

Страница 6: ...n electrical and electronic equipment RoHS References of standards applied for this EC declaration of conformity No Title Issue EN 61000 6 1 Electromagnetic compatibility Immunity for residential envi...

Страница 7: ...S References of standards applied for this EC declaration of conformity No Title Issue EN 61000 6 1 Electromagnetic compatibility Immunity for residential environments 2007 EN 61000 6 2 Electromagneti...

Страница 8: ...00 ms 30 reduction 100 200 1 000 ms 60 reduction Mains freq 50 Hz EN 61000 4 16 Signal ports 100V 50 Hz Mains freq 50 Hz SS 436 15 03 Signal ports 250V 50 Hz Voltage dips and interruption EN 61000 4 2...

Страница 9: ...an automatically control the state of the data bus based just on the data it receives This allows the unit to be used with equipment that has no handshaking signal The maximum transmission rate possib...

Страница 10: ...5 mm AWG 24 12 RS 422 485 Electrical specification RS 485 Data rate 1 200 bit s 115 2 kbit s Data format 7 or 8 data bit Odd even or none parity 1 or 2 stop bit Connection Detachable screw terminal C...

Страница 11: ...m from this port This earth ing point should have a low impedance con nection to the conductive enclosure of the apparatus cabinet or similar where the unit is built in This conductive enclosure shoul...

Страница 12: ...e TD ON Transmitted Data Displays data received from the local RS 232 port OFF No data RD ON Received Data Displays data leaving the modem on the RS 232 port OFF No data RTS ON Status of RTS from the...

Страница 13: ...control ON 1 2 3 4 5 6 7 8 Data control S1 ON 1 2 3 4 5 6 7 8 RTS control S1 ON 1 2 3 4 5 6 7 8 Transmitter always active S1 Selection of bus format ON 1 2 3 4 5 6 7 8 2 wire RS 485 S1 ON 1 2 3 4 5 6...

Страница 14: ...s data format 10 bit Bus format 2 wire No termination and fail safe Note Switch 1 8 is not used No termination and fail safe ON 1 2 3 4 Termination with fail safe 2 wire ON 1 2 3 4 Termination with fa...

Страница 15: ...ts when there is no data on the RS 485 bus Full duplex is only possible if 4 wires are used Field of application RS 422 and RS 485 were both designed for multidrop applications When a system is instal...

Страница 16: ...and prevent proper operation Do not expose the unit to any kind of liquids rain beverages etc The unit is not waterproof Keep the unit within the specified humidity levels Do not use or store the uni...

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Страница 20: ...infos westermo fr www westermo fr Germany info westermo de www westermo de North America info westermo com www westermo com Singapore sales westermo com sg www westermo com Sweden info sverige wester...

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