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TERMINAL CONTROL
Structure of the ATV-45 2 data

TM-5-3895-374-24-1 Paving Machine Bituminous Material: Crawler Mounted Diesel Engine Driven Manual
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TM 5-3895-374-24-1 Serial link Presentation Incorporated in the ALTIVAR ATV-45 2 Is a point to point serial link operating either via 20 mA current loop, or RS232C link This function enables connection of the ATV-45 2 to a programmable controller or a microcomputer with a single link The data exchanges are programmed according to the very simple protocol, described below and enable: - adjustment of speed controller setting parameters, - control of the speed controller, - access to all control and signaling data More sophisticated applications can also be carried out by connecting the ATV-45 2 to a multidrop bus given the addition of an optional board, which ensures, in addition, control of the industrial protocols UNI-TELWAYS and MODBUS / J BUS! Link characteristics - Asynchronous serial link - Isolated transmission interfaces 20 mA current loop, RS232C -Speed 9600 bauds - Character format  1 start bit, 8 data bits, 1 odd parity bit, 1 stop bit All these parameters are fixed - The link Is of the master-slave type, the speed controller being the slave, and operating in half-duplex (a single station transmits at any given moment) - Speed controller response time 10 ms < Tr < 50 ms Connection -Use of the 20 mA current loop Is strongly recommended In industrial applications In environments with high levels of interference, or long distances Use a screened cable with 2 twisted pairs, with conductor cross sections of more than 0,5 mm2, maximum length = 500 metres - While isolated from the controller, the RS232C link, because of its electrical characteristics, is much more sensitive to interference and should not be used over distances longer than ten metres Transmission interfaces - These are available on the J4 connector of the ATV-45 2 a SUB D, 9 pin type, female connector, located In the lower part of the device - One of these interfaces only should be used for any given application - There is no links or switches needing to be set to a position Connector pins 6 REC+ NOTE 2 RX (RS232C) To use with a current loop, 3 TX (RS232C) connect terminals 6 and 2 1 REC- 4 Reserved 7 Reserved 8 Reserved 9 EMI+ 5 GND (RS232C) et EMI - (page 3-264)







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