RS485 Industrial Products

Table top type

a) Model LD-15U :

This is a universal converter which supports RS485 as well as RS422, 2 wire or 4 wire, Auto or DSR (+ or -) control. This converter supports Tx, Rx, DSR line. Switch setting is provided for 2 wire / 4 wire (differential) RS485 operation (i.e. half duplex or full duplex mode). Also switch setting for Auto, DSR +, DSR - control provided (for output enable on RS485 side - optional). It supports 32 units in multidrop environment. This unit has a built in optical isolator and surge protection for individual signal. (Normal unit works on 230V AC-option available for 10 to 40V DC voltage.)

b) Model LD-15 :

This is a converter, which supports only RS422 interface (full duplex) 4 wire on RS422 side and is with opto isolation, surge protection for individual signals.

Plug in type

Model LD- 15 PL :

This is a plug in RS232 to RS485 converter, very small, compact without opto isolation but with surge protection. This unit is self powered using DSR or CTS signals. External 5V required if DSR or CTS not provided. For selecting 2 wire or 4 wire on RS485 side 2 way selector switch is provided on the unit.

Din Rail Mounted type

Model LD-15 PN :

This is an industry standard Din rail panel mounted RS232 to RS485 / RS422 converter. Provision for 2 wire / 4 wire selection. The standard unit works on 230V AC (option 1OV DC- 40V DC).

Pin No.

Signal Name

In/Out

2

Tx OUT

Output

3

Rx IN

Input

5

GND

-

Pin No.

Signal Name

In/Out

2

Rx IN

Input

3

Tx OUT

Output

5

Signal Ground

-

ML LD-1C

RS232 to 0-20 mA Current Loop Convertor