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Serial Converters

Serial Converters

Extend Range and Utility of RS-232, RS-422, and RS-485 with Serial Converters

RS-232 transmission distance is limited by cable capacitance. Distances greater than 50' (15.2m) will reduce signal strength, leading to corrupt data and possibly complete signal loss. This makes it unsuitable for reliable long-distance communication. The low-cost solution is to convert RS-232 signals to an alternative format. RS-422 and RS-485 can handle 4,000' (1,200m). Fiber optic signals can be sent over much greater distances.

The declining availability of RS-232 ports on computing equipment is another reason for signal conversion. Converting RS-232 serial signals to USB lets a single PC receive connections from one or more serial devices. In some situations, electrical noise will disrupt serial signals and possibly damage sensitive equipment. The solution is an RS-232 repeater providing surge protection.

 

Typical Applications

Serial communication is built into equipment found in many different sectors. It's used in building access control and also in Intelligent Transportation Systems (ITS). In industrial sites, it's used for data acquisition, process control, and automation.

Users like sending data to a central location, often for logging on a PC or for decision-making. Lots of older equipment was built with only RS-232 outputs, so transmission requires conversion and possibly reconversion at the receiving end. It's not uncommon to have an RS-232 source converted into RS-422 or fiber optic signals for long-distance transmission. Then at the receiving end, it's converted back into RS-232 and finally to USB so multiple devices can communicate with a single PC.

Product Range

Westward has converters for serial (RS-232/422/485) to fiber, serial (RS-232) to serial (RS-422/485), and serial (RS-232 or RS-422/485) to USB. Manufactured by Antaira Technologies, these are all warrantied for 5 years.

Serial-to-Fiber Converters

Resistant to EMI, fiber can send signals many miles. The Antaira STF-300C-CM02 is an inexpensive means of converting RS-232/422/485 signals for fiber transmission. For a more robust solution, consider the STF-401C compact industrial serial-to-fiber media converter. DIN-rail mountable, it's a good solution for ITS, process control, and industrial automation. Where isolation is required the STF-501C and STF-502C provide superior equipment protection.

Serial-to-Serial Converters

Converting the output from RS-232 to RS-422 or RS-485 increases the maximum transmission distance significantly. The STS-1915S performs this conversion and can work as either a client or server, providing RS-422/485 serial communication through the standard RS-232 port.

Serial-to-USB Converters

These let a PC or laptop with no serial port send and receive data. At their simplest, they comprise a cable with a male USB connector at one end and a block incorporating a DB9 connector and conversion electronics at the other. The UTS-1110A handles RS-232 to USB conversion while the UTS-1458B does the same for RS-422/485. When isolation is needed, the UTS-1461A-SI and UTS-401BK-SI perform the same one-to-one conversion but with additional protection.

Similar converters are available for when it's useful to put multiple RS-232 cables into a single USB port. The UTS-402CK has two male DB9 connectors, the UTS-404A has four, UTS-408A has eight and the UTS-416AK accepts 16 RS-232 inputs.

Whether you need an industrial serial or USB conversion, Westward Sales is ready to configure a communication solution that works. Contact us today. We promise a quick and informed response from our team.

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3onedata CAN485 1-port CAN Bus to RS-485 ConverterThe CAN485 from 3onedata Company is an interfa..
$134.00
3onedata FL485 1-Port RS-485 Signal Surge ProtectorThe FL485 from 3onedata Company offers 4500 V..
$19.00
3onedata GW1101 1-port RS-232/422/485 to Fast Ethernet Modbus GatewayThe GW1101 from 3onedata Co..
$199.00
3onedata INP314T-4DI(3IN1) 4-port RS-232/422/485 to 2-port Ethernet Serial Device ServerINP314T-..
$367.00
3onedata Model485P Industrial RS-232 to RS-422/485 Interface Serial ConverterThe Model485P from ..
$29.00
NP301 1-Port RS-232/422/485 to Fast Ethernet Serial Device ServerOlder industrial OEM and automa..
$82.00
3onedata NP3016T 16-port RS-232/485/422 Rackmount Serial Device ServerNP3016T series a..
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3onedata NP302T 2-port RS-232/422/485 to Fast Ethernet (10/100TX) Device ServerThe NP302T series..
$129.00
3onedata NP308T 8-port RS-232/422/485 Serial Device Server, 10/100TXNP308T series are ..
$285.00
3onedata SW4485I 4-port RS-485 HUB with Isolation ProtectionSW4485I is an RS..
$146.00
Antaira SED-1010S High-Speed RS-232 over CAT-5 Extender, 1.2 km Distance with Surge ProtectionTh..
$120.00
Antaira STE-501C RS-232/422/485 Serial to Fast Ethernet ConverterThe STE-501C is a gateway between..
$100.00
Antaira STE-502C 2-Port RS-232/422/485 Serial to Ethernet GatewayThe STE-502C from Antaira Technol..
$157.00
Antaira STE-6104C-T-V2 Industrial 4-port RS-232/422/485 to 2-port Fast Ethernet Device ServerThe..
$503.00
Antaira STF-300C RS-232/422/485 to Fiber Media Converter, Multi or Single-Mode or WDMThe STF-300C ..
$167.00
Antaira STF-401C Serial to Fiber Media Converter, Multi or Single-Mode, SC or ST ConnectorThe ST..
$262.00
Antaira STF-501C Serial to Fiber Media Converter, 2.5 kV Isolation, Multi or Single-Mode, SC or ST ..
$346.00
Antaira STF-502C Media Converter with RS-232/422/485 to 2 Fiber Ports, Multi or Single-ModeThe A..
$482.00
Antaira STM-501C 1-Port Modbus TCP to Serial RTU/ASCII GatewayThe STM-501C, MODBUS gateway allows ..
$184.00
Antaira STM-601C Modbus TCP to Serial Industrial RTU/ASCII Gateway with 2 Ethernet PortsThe STM-..
$260.00
Antaira STM-602C 2-Port Modbus TCP to Serial RTU/ASCII Gateway, Class 1 Div 2 RatedThe STM-602C ..
$330.00
Antaira STM-604C Modbus TCP to 4-Port Serial RTU/ASCII Gateway, Class 1 Div 2 RatedAntaira Techn..
$499.00
RS-232 to RS-422/RS-485 Converter with Surge Protection, Port Powered or Optional Power AdapterA..
$52.00
Antaira STS-1920SI RS-232 to RS-232 Repeater with Surge and Isolation ProtectionVoltage spikes and..
$84.00
Antaira STW-602C Industrial 2-Port RS-232/422/485 Serial to Wi-Fi GatewayThe STW-602C from Antai..
$237.00
Antaira STW-611C Industrial 1-port Serial to Wi-Fi Device Server with Bridge ModeThe STW-611C is..
$293.00
Antaira STW-612C Industrial 2-port Serial to Wi-Fi Device Server with Bridge ModeThe STW-612C ma..
$367.00
Antaira UTS-401BK-SI Industrial RS-422 / RS-485 to USB Converter with Surge & Isolation Protecti..
$157.00
Use the DIN-Rail kit to secure the DIN-RAIL to an equipment enclosure or control cabinet.  The ..
$5.00
Patton FOI-2890 6-Channel Serial to Fiber Isolator and Extender with 4 Control/Relay SignalsThe ..
$959.70
Patton FiberPlex FOI-2990 Extends Relay and Control Signal over Fiber OpticsThe FOI-2990 series ..
$733.95
Patton Electronics TD-1280 and TD-1281 RS-232 Isolator and Extender over Fiber OpticsThe FiberPl..
$918.75
Patton FiberPlex TD-1580 and TD-1581 RS-422 and EIA-530 Isolator and Extender over Fiber OpticsT..
$918.75
Patton Electronics TD-7280 Line Level Stereo Audio, Serial, and Control Extender over FiberThe f..
$866.25
CB-RJ45-DB9F-90 RJ45 to DB9 Female Serial Cable, 90 cmThe CB-RJ45-DB9F-90 is a serial ..
$13.00
Patton 1009 RS-232 Self-Powered Short-Range Modem up to 17 Miles over Twisted PairsThe Mode..
$84.53
Patton 1040 RS-232 Self-Powered Line Driver, Short Range, Modem with Surge ProtectionThe Model 1..
$381.57
Patton 2089 RS-232 to RS-485 Serial Converter with Handshaking, Interface PoweredPatton Electron..
$125.58
Patton 222N RS-232 to RS-422 Serial Converter, Interface Powered, Choice of ConnectorPatton Elec..
$84.53
Patton 222N9 RS-232 (DB-9) to RS-422 Serial Converter, Interface Powered, Choice of ConnectorPat..
$84.53
Antaira UTS-402CK 2-Port RS-232/422/485 to USB 2.0 Converter, Optional IsolationThe UTS-402CK fr..
$136.00
CB-RJ45-DB9M RJ45 to DB9 Male Serial Cable, 30/90 cmThe CB-RJ45-DB9M is a serial strai..
$11.00
Antaira UTS-404A 4-Port RS-232 to USB Converter, Optional Isolation and Locking ConnectorsThe UT..
$136.00
The AD-DB9F-TB5P35 is an RS-422 or RS-485 adapter that converts a DB-9 female connector to a 5-pin 3..
$16.00
Antaira UTS-408A 8-Port RS-232 to USB Converter with Optional Isolation and Locking ConnectorsTh..
$241.00
The AD-DB9F-TB5P38 is an RS-422/485 adapter that converts a DB9 female connector to a 5-pin 3.8 mm t..
$16.00
Antaira UTS-1110A RS-232 to USB Converter with TX / RX LED Indicators and 2.6-foot (80 cm) CordThe..
$31.00
Antaira UTS-416AK 16-Port RS-232 to USB 2.0 High Speed Converter with Locking ConnectorsThe indu..
$419.00
Antaira UTS-1458A RS-422 / RS-485 to USB Converter with 6-foot (1.8 m) CordMulti-drop RS-422 / RS-..
$62.00
Antaira UTS-1458A-SI RS-232 to USB Converter with 8-foot (2.5 m) Cord and Surge ProtectionRS-232 h..
$94.00
The ADP-RJ45DB9F-C is an RJ45 to DB9 male cable adapter with crossover pinouts. One pack of fou..
$32.00
The ADP-RJ45DB9F-S is an RJ45 to DB9 female cable adapter.  Straight-through pinouts. Pack..
$32.00
The ADP-RJ45DB9M-S is an RJ45 to DB9 male cable adapter.  Straight-through pinouts. Pack o..
$32.00
SENA Technologies BTS-1000A Bluetooth to RS-232 Serial Converter with 2dBi AntennaSENA Technolog..
$76.00
SENA BTS-1000A-2 Bluetooth to RS-232 Serial Converter Pair, PreconfiguredSENA Technologies' BTS-..
$138.00
SENA Technologies BTS-1000A-UD100 Bluetooth to RS-232 and Bluetooth to USB ConvertersThe BTS-100..
$101.00
SENA PARANI-SD1000 Bluetooth to RS-232 ConverterThe Parani-SD1000 from SENA Technologies is an R..
$94.00
PARANI-SD1000U Bluetooth to USB AdapterThe Parani-SD1000U from SENA Technologies is a Bluet..
$94.00
PARANI-SD1100 Bluetooth to RS-422 / RS-485 ConverterThe SENA Technologies’ Parani-SD1100 is a Bl..
$94.00
GC-F09F09-N Miniature Null Modem Gender Changer with Dual DB-9 Female ConnectorsA Null Mode..
$6.00
The compact GC-F09F09-S with female DB-9 connectors on both sides will connect two cables with m..
$5.00
GC-F09M09-N Miniature Null Modem Gender Changer with Male and Female DB-9 Connectors..
$6.00
GC-M09M09-N Miniature Null Modem Gender Changer with Dual DB-9 Male ConnectorsA Null Modem ..
$6.00
The Parani-FM9GD from SENA technologies is a miniature gender changer that converts a 9-pin female D..
$4.00
PA-STE502-US Power Adapter For the STE-502CRecommended AC/DC power adapter for the STE-502C..
$16.00
Antaira Technologies PA-STS-US AC/DC Power Adapter for the STS Family of Serial-to-Serial Devices ..
$13.00
Use the DIN-RACK-2U adapter to secure DIN rail mountable electronics into a standard 19" rack mount ..
$73.00
Manufactured from sturdy zinc-plated steel, the DIN-RAIL track fits into all standard DIN rail compa..
$6.00
15W AC/DC Power Adapter to Power STE Devices, LNX Switches and IMP Media Converters, 12V OutputU..
$16.00
ATAC BT232 RS-232 Serial over Bluetooth 2.1 Converter, 3 dBi AntennaThe BTS232 from ATAC is a se..
$78.00
ATAC BT432 RS-232/RS485/RS422 Serial over Bluetooth 2.1 Converter, 3 dBi AntennaThe ATAC BT432 i..
$78.00
Sena PARANI UD100-G03 USB to Bluetooth Adapter, 300 m to 1000 m Working DistanceConvert a USB po..
$37.00
Serial, Converters, Connectivity