Skip to main content

Data Sheet

Passive RS232 RS485 Converters (C14)

C14

pol_pm_C14-Pasywny-mini-konwerter-RS232-na-RS485-83_1.png

Features

  • Interface feature: RS232C/RS485 standard interface compatible with EIA TIA
  • Electric interface: RS232 end DB9 hole connector RS485 end terminal with connection pole
  • Passive, anti-static
  • Economical type
  • Working mode: asynchronous half-duplex differential transmission
  • Transmission media: twisted - pair
  • Transmission rate: 300-115.2 kbps
  • External discharge dimension: 56.3 mm x 33.5 mm x 15.8 mm
  • Working circumstances: -25°C to 70°C
  • Relative humidity: 5% to 95%
  • Transmission distance: 1,200 m (RS485 end); 5 m (RS232 end)
  • 2 years warranty
  • Customization of OEM is welcomed

Introduction

In remote data communication between a computer and peripheral equipment, it is often required to make an interconversion between standard serial interfaces. Compatible with RS232C / RS485 standards, the Passive Serial Converter can convert mono-end RS232 signal to differential RS485 signal and extend the communication distance up to 1.2 km.

No external power is needed as it adopts a RS232 charge pump to drive the system and gain electricity without initializing the RS232 serial interface. An internal zero delay auto transceiver and particular I/O circuits automatically control the data stream direction without any handshake signal (for example RTS, DTR, etc.). Thereby it guarantees to function under RS485 standard without changing the program compiled under RS232 half-duplex mode and assures the adaptation to a current operation software and interface hardware.

It implements multi-machine response communication and is commonly used in industrial automation control systems, all-one-card, access control systems, consumption systems, time and attendance systems, parking systems, self-service banking systems, bus charging systems, highway toll station systems and many more.

Specifications

Redisage PN
 C14
Converter ports
 1 x RS232 & 1 x RS485
Power
 Voltage passive
Power < 1 W
Frame ground protection
 yes
Serial interface
 RS232 TxD, RxD, GND
RS485 A, B
Baud rate
 up to 115200 bps
LED indicators
 N/A
RS485 termination
 N/A
Connector
 RS232 DB9 male connector
RS485 3-pin terminal block max. 2.5 mm2 wire
Power N/A
Transmission distance
 RS485 max. 1,200 m at 9.6 kbps; max. 400 m at 115.2 kbps
(Belden 9841 2P twisted-pair cable, if different cables are used,
the transmission distance may change)
RS232 max. 15 m at 115.2 kbps
Mounting and enclosure
 compact
Temperatures -40°C to +75°C operating and storage
Humidity 10 - 90% RH, non-condensing

ESD protection

±4 kV contact discharge / ±8 kV air discharge

Certification

CE, RoHS

Connector and signal

31d80de2-46e1-4e8a-bebf-3ff2badd41c6.png

RS232C pin distribution

DB9 Female (PIN)

RS-232C Interface Signal

1

Protective

2

RXD SIN

3

TXD SOUT

4

DTR

5

GND

6

DSR

7

RTS

8

CTS

9

RI

RS485 data output & connector and pin distribution

DB9 Male (PIN)

Data Output

RS-485 Half Duplex

1

T/R+

RS485 (A+)

2

T/R-

RS485 (B-)

3

GND

Ground wire

4

VCC

9 VDC

Applications

C14 - Non-isolated (Passive)

Product dimensions

1c961d11-16a2-4831-a737-f164c01a6a38.png

Troubleshooting

Data communication failure

  • Check if the RS232 interface connection is correct.
  • Check if the RS232 output connection is correct.
  • Check if the connection ends are well-connected.

Data loss or mistake

  • Check if the data rate and format are consistent on both communication ends.

Additional notes

Related information and links
Ordering information Accessories Similar products

Products family sample photo

https://redisage.com

DISCLAMER NOTES
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR OTHERWISE.

Datasheet-ID: 

SR-D

Back to top