RS422/485<>RS422/485 programmable port isolator
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: Another application is a multi-drop connection of non-addressable RS232/422/20mA devices, to enable 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.
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.
|Ports:||• 2 Asynchronous ports, Tx and Rx signals only. XON/XOFF selectable|
• 30-115200 baud, n/e/o parity, 7/8 data bits, 1/2 stop bits.
• 20mA Loop ports: 30-19200 baud (preliminary information)
|Interface options:||• Standard product: port-1 is RS422/485; port-2 is RS422/485|
|Configuration:||• By software|
|Signaling:||• LED, port-1 Rx/Tx, port-2 Rx/Tx, power|
|Power supply:||• +7 to +35VDC|
|Consumption:||• 1-2 watts (startup current 300-600mA)|
|Isolation:||• 3 Way galvanic isolation, 64V PK at > 1000AC RMS, 1 second|
|EMI-RFI protection:||• Emession EN50081-2 (94), immunity EN50082-2 (95)|
|EMC & Security:||•|
|Environment:||• Operating temp. 0 to +50°C, RH 0 to 90% non condensing|
|Dimensions, weight:||• 29mm (W) x 113mm (H) x 100mm (L)|
|Ventilation:||• 50mm gap below and above the converter|
• KD485 ANSI C compiler (U8/300)
• MODBUS RTU SLAVE library for KD485-PROG
• RJ-11 RS232/422 configuration cable
• RS232<>RS422 converter for configuring units with a RS422/485 interface on Port 1
To connect devices with a different protocol to each other. Giving 3-way galvanic isolation between serial devices.