Description
The Seika RS232 / RS485 interface converter for connection of SEIKA sensors with RS485 interface to RS232 port of a computer.
The interface converter consists of an aluminium housing with a PCB, a 9-channel SubD port for the RS232 bus, a 4-channel clamp for the RS485 bus, a plug for the external 12V supply voltage, two LEDs for monitoring system operation, the bus voltage level and termination resistances and the interface electronics with voltage level converters and transmission line drivers and receivers.
MAIN FEATURES OF SC485B INTERFACE CONVERTER:
- Robust, pressure die cast aluminium housing (IP65) with saltwater proof coating
- 9 to 15V supply voltage
- Either connection polarity
- Internal 5V stabilising and internal generation of the ± RS232 voltage levels
- Half duplex RS232 / RS485 bus
- Up to 128 participants on RS485 bus
- 9 Channel Sub D RS232 port
- LED indicating bus activity
TECHNICAL SPECIFICATIONS:
- Supply voltage: 12Volt ±3Volt
- Current drawn: approx. 30mA + current drawn by sensors
- RS485 terminals: 4 x 1.5mm²
- RS232 port: Dsub9 socket
- RS485 Bus: half duplex
- Terminator resistance: 100 Ohm, can be disengaged by solder bridge
- ESD protection on RS485 bus: ±15kV (Human Body Model)
- Participants on single bus: Maximum 128
- Data transfer rate: Maximum 250kbps
View all SEIKA products here.
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