■ DIP switch for adjustment of the node address

■ Protection class IP20

■ 2 x end brackets BL20-WEW35/2-SW

■ 1 x end plate BL20-ABPL

■ LEDs for display of supply voltage, group

and bus errors

■ Gateway between the BL20 system and

Modbus RTU / ASCII

■ RS485 or RS232, configurable

■ 9.6 kbps … 115.2 kbps

■ Push-in terminals

■ Extended temperature range: -25 °C…+60

°C

■ Circuit boards with conformal coating

Functional principle

BL20 gateways are the head component of

a BL20 station. They are designed to interface the modular fieldbus nodes to the higher level fieldbus (PROFIBUS-DP, DeviceNet,

CANopen, Ethernet).

All BL20 electronic modules communicate

over the internal module bus, the data of

which is transferred to the fieldbus via the

gateway, so that all I/O modules can be configured independently of the bus system.