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It is single-canal, double-sided converter of RS232c serial interface to RS485(with galvanic separation). It uses simple double-wire line (half duplex), without need to shade transfer route. Maximum range is 1200 m. Galvanic separation provides protection from compensatory currents and induced voltage overload. Wired part RS485 is protected from puls voltage overload (software protection). Receiver may be turned on permanently or its control may be set inverse to the transmitter control. End and resting resistance may be realized by short-circuit connectors.
It is supplied from external +12V DC power supply (±10%, with positive pole on middle contact) and it has protection from mis-poling and pulse voltage overload.
| Technical specification | |
| Maximum transfer speed | 460kb/s |
| Maximum wire length | 1200m |
| Option of end resistance | 120W |
| Transmitter control RS485 | TxD signal |
| Galvanic separation | 1kV |
| Voltage overload control (software) - RS485 side | 600W/1ms |
| Voltage overload control (software) - power supply | 600W/1ms |
| Connector RS232c | D-SUB 9 pin F |
| Connector RS485 | terminal board |
| Power supply connector | plug 1.3mm |
| Number of canals | 1 |
| Supply voltage | 12V DC (±10%) |
| Diagnostic LED | supply voltage (red), reception (green) |
| Shield | IP 30 |
| Weight (without power supply) | 0.10kg |
| Input | max. 0.8W |
| Dimensions | 58x17x56mm |
| Standard module configuration | |||
| Receiver control RS485 | PR1 | OFF | permanently turned on |
| Wire holding - pull up | PR2 | ON | pull up set |
| Wire holding - pull down | PR3 | ON | pull down set |
| End resistance | PR4 | ON | 120W set |
