TM 5-3895-374-24-1Serial linkPresentationIncorporated in the ALTIVAR ATV-45 2 Is a point to point serial link operating either via 20 mA currentloop, or RS232C link This function enables connection of the ATV-45 2 to a programmable controlleror a microcomputer with a single linkThe data exchanges are programmed according to the very simple protocol, described below andenable:- adjustment of speed controller setting parameters,- control of the speed controller,- access to all control and signaling dataMore sophisticated applications can also be carried out by connecting the ATV-45 2 to a multidrop busgiven the addition of an optional board, which ensures, in addition, control of the industrial protocolsUNI-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 bitAll 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 msConnection-Use of the 20 mA current loop Is strongly recommended In industrial applications In environmentswith high levels of interference, or long distancesUse 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 muchmore sensitive to interference and should not be used over distances longer than ten metresTransmission 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 positionConnector pins6REC+NOTE2RX (RS232C)To use with a current loop,3TX (RS232C)connect terminals 6 and 21REC-4Reserved7Reserved8Reserved9EMI+5GND (RS232C) et EMI -(page 3-264)
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
