USB RS232 RS485 Converters

C37, C38 & P03 USB RS232 RS485 Converters documentation

Data Sheets

USB FTDI Converters Data Sheet
USB FTDI ESP32 Programmer Data Sheet

Data Sheets

USB FTDI Converters Data Sheet

USB RS232 RS485 Converters (C37 & C38)

C37(EX) C38(EX)

Features

USB to UART or RS232/RS485 converter
ESD protection for the RS485 data line
Transmission speed up to 115200 bps
Tx, Rx and power LED indicators
Operating temperatures: -40°C to +75°C
Compact size
Dimensions: 55.4x20.3x11.85 mm
3 years warranty
Customization of OEM is welcomed

Specifications

Redisage PN		C37	C38
Ports		UART	RS232/RS485
Expanders		C37EX USB-A adapter for UART	C38EX DSUB-A adapter for RS232
Power		< 1 W
Frame ground protection		no
Baud rate		up to 115200 bps
LED indicators		communication Tx, Rx and power
RS485 termination		120 ohm Manually Enabled
Connector	RS232/UART	3-pin terminal block max. 2.5 mm² wire
Connector	RS485	N/A	2-pin terminal block max. 2.5 mm² wire
Transmission distance	RS232/UART	max. 15 m at 115.2 kbps
Transmission distance	RS485	N/A	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)
Mounting and enclosure		DIN rail, plastic PA - UL 94 V0, black/green
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

Variants

C37 - UART 3V3 USB FTDI Converter

C38 - RS232/RS485 USB FTDI Converter

Jumpers

Jumper name	C38 jumpers
E	Echo Disable
A	Pull Up 523 ohm - A Line (RS485)
B	Pull Down 523 ohm - B Line (RS485)
T	120 ohm Termination

Pin assignments

Pin No.	C37	C38
1	NC	Tx RS232
2	VCC 3V3	Rx RS232
3	GND	GND
4	Tx UART 3V3	A RS485
5	Rx UART 3V3	B RS485

Accessories

C37(EX)	C38(EX)

Enclosure dimensions

Compact USB Enclosure
55.4 x 20.3 x 11.85
Units: mm

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

Data Sheets

USB FTDI ESP32 Programmer Data Sheet

USB RS232 RS485 Converters (P03)

ESP32 USB Programmer for P01 and P02 Open IoT and IIoT Gateways. It can be used to connect a gateway to a PC via a microUSB and a TAG-Connect cable.

eng_pl_P03-USB-Programmer-for-ESP32-P01-P02-Open-Gateways-FTDI-39_3.jpg