Corel Ventura - KD485LFT.CHP
Contents
1. KD485 232 422 l RS485 RS485 RS485 RS232 PORT 1 PORT 2 device device device full duplex TX host system m i ADE PROG OPTION P2 GND 6 Cable shield ON KD485 STD 2 RX THE DATA PASSES ae 5 STRAIGHT THROUGH gt 3 4 H P ie y_TX 2 3 4 3 RX 3 2 RTS IN TXB be eaor 5 gt gt 2 GND 7 5 BERND TxA i coe Pa pa control SWITCH Extemal wire 5 2 wire RS485 port power surety F 1 7 35V DC R g POWER INPUT SWI ON p sion If no chassis terminal is provided use cable shield as the GND wire RTS Control is required on KD485 STD we can be RTS connection abo omitted on KD485 ADE PROG The standard KD485 is RS232 RS422 485 therefore it is not necessary to specify the 232 422 suffix when ordering Another application is a multi drop connection of non addressable RS232 422 20mA devices to enable them to be conveniently polled from a single RS485 Master device The KD485 ADE can act as an addressable adapter Many projects involve the interconnection of equipment which is mutually incompatible The KD485 PROG can be programmed in ANSI C to convert virtually any async industrial automation protocol into any other Three Standard Versions The KD485 is available in three stock versions which share the following common features DIN rail e2. 0 support Part of the extended runtime library is in ROM keeps user programs compact and fast Easy tri state driver control for RS485 multi drop apps Eight 1ms resolution timers 0 65535ms A hardware watchdog timer for additional ruggedness Any part of the 32k EEPROM is also user writeable A high quality optimising cross compiler is available Documentation and usage examples for every function Optional real time clock Assembler programming and direct hardware access are rarely if ever required Programming the KD485 is far easier than trying to achieve reliable comms on a PC based system For value added resellers program security is ensured by the program upload being one way only Each unit also has a unique program readable serial number The KD485 PROG has a 16 position user program readable front panel rotary hex switch A MODBUS RTU Slave library is available for rapid MODBUS protocol converter development The KD485 STD requires no configuration The ADE and PROG use a front panel switch to set port 1 into a configuration mode where various configuration and test functions are accessible via a command line user interface These include a Test Slave Device command which interrogates any RS485 Slave and returns response in ASCII or hex Alternatively a supplied Windows based configuration program with pull down menus can be used Eln Pert fon Ekip Pori 1 GZ Put 2 ARAZLA ATE Plead Piagam Biad amta
3. PROG MODE 2 ADE PROG MODE 2 ADE PROG MODE 2 oooo PORT 1 RS 232 SIDE PORT 1 RS 232 SIDE PORT 1 RS 232 SIDE oo000 afr o pip la ain la a LHH gt L gt L enenenEn eenEnET Srereners POWER RS485 Master System SUPPLY UNIT In the 4 wire RS485 system shown the Master does not need ki E tri state capability For example a normal RS232 PC with a K422 PAAA interface converter can be used In a 2 wire RS485 system the configuration is the same as shown butthe Master must have tri state capability and must enable its driver only when transmitting You should also set SW1 to ON n Dies ke 22202000 Each KD485 must be ADE or PROG and be running the Mode 2 f ooo0o0oo0 built in program Each KD485 must be configured with a different ANTAAAAAT AA 7 DADE Seabe Se address and the Master must emit the correct addresses RS232 devices with no built in addressing or multi drop support This configuration is equally applicable to RS422 devices which do not support multi drop operation using KD485 ADE 422 422 KD485 PROG Applications The KD485 PROG does everything the ADE does In addition it is user programmable in ANSI C The user program up to 32k code 16k data is uploaded in Intel hex using any terminal emulator capable of ASCII upload Features include Fast 16 bit microcontroller H8 300 running at 14 75MHz Fully queued 1 0 2k RX and 1k TX queues per port with selectable xon xoff handshakes easy to use C 1
4. KK SYSTEMS LID NEW 20mA version KD485 STD KD485 ADE KD485 PROG KD485 Universal Isolated Interface Converter VY Two RS232 422 485 20mA ports The KD485 is a multi purpose isolated VY 7 V to 35V DC powered RS232 422 485 20mA interface converter with vite teas ass eae ci v Automatic D lal Enable on RS485 industrial interface and protocol conversion WY Data flow indicator LEDs applications Y 30 115200 baud low emissions drivers A MODBUS RTU comms library W Removable screw terminals is available for rapid MODBUS protocol VY User programmable model ANSI C converter development Overview The KD485 is a multi purpose interface converter designed to satisfy a wide range of industrial datacomms requirements One common application is the connection of multi dropped RS485 devices to an RS232 system Most currently available converters require the RS232 device to control its RTS signal to enable disable the RS485 driver but some RS232 systems do not have this capability The KD485 ADE avoids RTS control KD485 STD This entry level product has no CPU It is an interface converter isolator only and is baud rate and character format independent Its main application is RS232 422 485 20mA isolated interface conversion It can also drive a 2 wire RS485 bus if the RS232 host provides RTS control RTS HIGH when sending LOW when receiving RS232 to 2 wire RS485 half duplex multidrop conversion
5. ion Organiser PC based configuration programs for DOS and Windows are included KD485 PROG This fully programmable version has all KD485 ADE features plus a large EEPROM and a means of uploading user written programs into it Programs can be written in ANSI C assembler and other languages and are uploaded to the KD485 PROG with a supplied PC based terminal emulator program KD485 STD Applications RS232 RS485 2 wire conversion where RS232 host RS232 RS422 full duplex interface conversion driver is always enabled RS232 RS485 4 wire conversion driver may be left permanently enabled on Master see diagram supplies RTS control Full duplex RS232 RS422 20mA isolation available in any combination of these port types RS232 to 4 wire RS485 half duplex multidrop conversion KD485 232 422 RS232 PORT 1 PORT 2 full duplex TX host system 1 OE PROG OPTION Peano 6 ON KO485 STD 2 RX THE DATA PASSES AXB 5 j STRAIGHT THROUGH O Hfi RXA _TX 2 3 4 3 lt RX 3 2 ATS IN TXB m eram 5 gt 2 gt TF GND 7 5 e 6 P1 GND TXA 1 m E DB25 connector gt DB9 connector new Cable shield powersuprty F 1 O SWITCH 7 35V DC 8 ie POWER INPUT Ino chassis terminal is provided use cable shield as the GND wi For Master use SW OFF and no RTS co
6. mbe Brighton BN45 7ED Great Britain 2 SYSTEMS 44 0 1273 857185 fax 44 0 1273 857186 e mail info kksystems com www__ http www kksystems com 95 98 KK Systems Ltd All rights reserved Patents applied for All specifications are subject to change without notice E amp OE Edition 6 20 JUL 98
7. nclosure with removable screw terminals fits 35mm symmetric rails DC power input in the range 7V to 35V uses a high efficiency switching power supply Two serial ports Port 1 and Port 2 isolated from each other and from the power supply Port 1 is RS232 Port 2 is RS422 485 as standard Either port can be supplied as RS232 RS422 485 or 20mA loop Controlled slew rate drivers on RS422 485 ports no terminators needed for cables shorter than 300m Internal pull up pull down resistors on RS422 485 ports ensure that RS485 bus floats to a valid state when not driven KD485 ADE As the KD485 STD also inserts a CPU with two serial ports into the data path Several standard application programs Modes are provided in a built in ROM Mode 0 emulates KD485 STD also offers baud rate and character format conversion Mode 1 as above plus Auto Driver Enable The Port 2 RS485 driver is auto controlled according to Port 1 RX data a similar function can also be enabled on Port 1 to form a bidirectional ADE converter Mode 2 RS485 Addressable Adapter This makes possible to connect non addressable devices to a 2 4 wire RS485 bus through which they can be polled by a single Master Devices which emit data continuously are also supported The RS485 address and an optional lead in byte are fully configurable The KD485 ADE can be configured with any dumb terminal a PC or a hand held terminal such as a Ps
8. ntrol needed SW3 ON permanently enables Port 2 driver TS connection is not required on a 4 wire RS485 Master Use SW3 ON For Slave use SW1 ON prevents Master receiving back its own transmission The standard KD485 is RS232 RS422 485 therefore it is not necessary to specify the 232 422 suffx when ordering KD485 ADE Applications RS232 422 20mA full duplex baud rate and character RS232 422 20mA to RS485 2 wire where host cannot supply RTS control see also diagram on previous page RS485 Addressable Adapter for multi dropping non addressable RS232 422 20mA devices see diagram format conversion with data buffering KD485 ADE 422 422 connects 2 4 wire devices to a 2 4 wire 485 bus both ports can tri state KD485 ADE PROG as an Addressable Adapter Mode 2 program liel fse el lt lielfslel el lt e _ e Renee Teele ENeeler ie gs 2 8 Each KD485 PORT 2 RS 455 sibe PORT 2 RS 485 SIDE PORT 2 RS 485 SIDE is a Slave KD485 KD485 KD485 01000 ADE
9. on of RS232 RS422 485 or 20mA loop can be supplied Receiver threshold 1 5V typ Receiver Rin 5kQ typ TX o p 8V typ 3k load Receiver threshold 200mV typ differential Receiver Rin 12kQ min TX 0 p 0 to 5V no DC load 2 to 3V 120Q ohm load Input LED nominal drop 2V Output o coll transistor Vce sat lt 2V 20mA current source accuracy 20 no load voltage approximately equal to KD485 supply voltage 4V 7V to 35V DC 12V DC suggested 7V to 26V DC if two 20mA Loop ports are fitted Input power approx constant at 1 2 watts startup current 300 600mA depending on model At startup the supply voltage must reach 7V in lt 1 sec 64V PK tested at gt 1000V AC RMS 1 second Operating temperature 0 to 50C Storage temperature 25C to 70C Relative humidity operating and storage 0 to 90 non condensing Rail mounted KD485 must have a 50mm gap above and below Emissions EN50081 2 94 immunity EN50082 2 95 29mm W x 113mm H x 100mm L approx in rail mounted position including screw terminals Port parameters Interface Options RS232 RS422 485 20mA loop Power supply Isolation Environmental Ventilation EMC compliance Dimensions Other Products A wide range of interface converters and protocol converters is available with customisation options Designed and Manufactured by Address correction KK Systems Ltd Tates London Road Pyeco
10. stun a o Bardis aan z Mee 1 Bhinword A 2 biyel p Drip Paiiy ek Pady aoe A PADD User Progi k iia f i hanti aed i F Mangia diabri Ti Hentai tabled E ipla RITA teenie ize Theat diced f POPs Gil 7m T ype ADE Ordering Information Standard products RS232 to RS422 485 KD485 STD KD485 ADE KD485 PROG User manual included KD485 ADE and KD485 PROG include a 3 5 diskette Specials RS232 RS422 485 20mA As above plus a suffix denoting port types for Port 1 and 2 The two ports can be populated in any combination of RS232 RS422 485 or 20mA Preferred versions use Port 1 for RS232 and Port 2 for RS422 485 20mA for example KD485 ADE 232 20MA KD485 ADE 422 20MA KD485 ADE 422 422 KD485 ADE 232 232 etc KD485 ADE 20MA 232 is not preferred and is functionally identical to KD485 ADE 232 20MA Accessories KD485 ANSI C Compiler H8 300 MODBUS RTU SLAVE Library for KD485 PROG RJ 11 RS232 RS422 Configuration Cable RS232 RS422 converter for configuring units with RS422 485 on Port 1 various converters available or use KD485 STD vema v1 Ports Two asynchronous ports TX amp RX signals only XON XOFF selectable KD485 STD 0 to 115200 baud all character formats KD485 ADE PROG 30 115200 baud n e o parity 7 8 data bits 1 2 stop bits 20mA Loop ports 30 19200 baud preliminary information Standard product port 1 is RS232 port 2 is RS422 485 Any combinati
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