RS-485 to RS-232 dispenser interface converter

PURPOSE


RS-485/RS-232 dispenser interface converter (RS-485 to RS-232 interface and backwards) is used for communication with fuel dispensers, which use RS-485 interface, through RS-232 interface, and also on the contrary: for communication with fuel dispensers, which use RS-232 interface, through RS-485 interface.

RS-485/RS-232 dispenser interface converter allows connection of up to 2 fuel dispensers.

RS485-2 (2-channel interface converter board):

RS-485/RS-232 dispenser interface converter RS-485 / RS-232
RS-485/RS-232 dispenser interface converter RS-485/RS-232
Click on image to enlarge

RS485-2 (2-channel interface converter board), mounted in plastic box:

RS-485/RS-232 interface converter
RS-485 / RS-232 pump interface converter RS-485/RS-232 interface converter Connect to RS-232 dispenser
Click on image to enlarge


Due to a reason that RS-232 interface in accordance with its standard is applied on distances not exceeding 15 m, RS-485/RS-232 dispensers interface converter can be applied in order to enlarge this distance by converting the interface to RS-485, which allows distance for communication up to 1200 m (in accordance with its standard) and thus provide remote control over dispensers with RS-232 interface from a bigger distances.

TECHNICAL CHARACTERISTICS


Specification:

Power supply voltage 12 V DC
Current consumption 75 mA max
Temperature range from -40°C to +80°C
Weight 45 g
Overall dimensions 85 x 58 x 25 mm


Communication ports:

PORT NAMEINTERFACEPURPOSE
DATA PORT RS-232 RS-232
(3 wires: TxD, RxD, Gnd)
Communication with a control system (POS terminal, cash register, OPT). Selection of interface is made using DIP-switch.
DATA PORT RS-485 RS-485
(2-wires: line A, line B)
PUMP PORTS Optically isolated RS-232 (3 wires: TxD, RxD, Gnd) Connection with fuel dispensers using RS-232 interface. Separate dispensers have to be connected to each of the pump ports.
PROGRAM PORT RS-232
(3 wires: TxD, RxD, Gnd)
Update of the interface converter firmware

CONNECTION SCHEME


2-channel converter:

RS-485/RS-232 dispenser interface converter
Click on image to enlarge

ORDER INFORMATION


RS-485/RS-232 dispenser interface converter   RS485-2 interface converter PCB board with terminal blocks
Order code: RS4852-PCB-001
RS-485/RS-232 interface converter   RS485-2 interface converter board, mounted in plastic box
Order code: RS4852-BOX-001