Rail-mount TTL To RS422 Galvanic isolated Converter, Anti-surge, Multiple Isolation Protection
Rail-Mount TTL To RS422 (B)
Galvanic isolated Serial Port Converter
Features At A Glance
- Compatible with TTL/RS422 standard, converting the TTL signal into differential RS422 signal, support full duplex communication
- Compatible with 3.3V ~ 5V TTL signal level, provides anti-reverse and over-voltage protection for power supply interface
- Onboard unibody power supply isolation, provides stable isolated voltage and needs no extra power supply for the isolated terminal
- Onboard unibody digital isolation, allows signal isolation, high reliability, strong anti-interference, low power consumption
- Onboard TVS (Transient Voltage Suppressor), effectively suppresses surge voltage and transient spike voltage in the circuit, anti-electrostatic
- Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provide over-current/over-voltage protection, improve shock resistance
- Onboard RS422 input and output terminal 120R resistor, enabled/disabled via jumper
- Industrial rail-mount ABS case design, small in size, easy to install, and cost-effective
Specifications
| PRODUCT TYPE | Galvanic isolated TTL to RS422 converter | |
|---|---|---|
| POWER SUPPLY INTERFACE | Power supply | 3.3V ~ 5V |
| Protection | over-voltage, reverse-proof | |
| DEVICE PORT | TTL/RS422 standard compatible | |
| TTL | Connector | screw terminal |
| Transmission distance | about 10m | |
| Transmission mode | point-to-point | |
| RS422 | Connector | screw terminal |
| Protection | surge-suppress and 15KV ESD protection | |
| Terminal resistor | 120R, enabled/disabled via jumper (inside the case) | |
| Transmission Distance | About 1.2km | |
| Transmission Mode | full duplex mode, point-to-multipoint (up to 256 nodes, it is recommended to use repeaters for 16 nodes or more) | |
| APPEARANCE | Case | Rail-mount ABS case, suitable for 35mm DIN rail |
| Dimensions | 106.0 × 58.6 × 36.0mm | |
Primary Function
Converting The TTL Signal Into Balanced Differential RS422 Signal
For Interface Converting, Expanding Nodes And Long-Distance Communication
Rail-Mount Support
Easy To Combine Multi Rail-Mounted Serial Server Together, More Freely
Multiple Protection, Safe And Stable
Onboard power and signal isolation, provide stable isolated voltage, high reliability and strong anti-interference. Onboard TVS (Transient Voltage Suppressor), effectively suppress surge voltage and transient spike voltage in the circuit, anti-electrostatic. Onboard resettable fuse and protection diodes, ensures the current/voltage stable outputs, provides over-current/over-voltage protection, improves shock resistance
Interface Introduction
| TOP SIDE SCREW TERMINAL | BOTTOM SIDE SCREW TERMINAL | ||
|---|---|---|---|
| VCC | Power Input DC 3.3V~5V power supply |
R+ | RS422 differential signal receive positive |
| GND | Ground | R- | RS422 differential signal receive negative |
| TXD | TTL transmit data pin | T- | RS422 differential signal transmit negative RS485 differential signal negative (B-)* |
| RXD | TTL receive data pin | T+ | RS422 differential signal transmit positive RS485 differential signal positive (A+)* |
| GND | TTL signal ground | GND | RS485/422 signal ground |
* Note: the TTL TO RS422 (B) is designed to be used with RS422 devices, however, it is also possible to be used with RS485 devices (yet only sending is available). It is recommended to use TTL TO RS485 (B) for RS485 device.
Communication Connection Diagram
TTL convert to RS422, point to point, full duplex communication, suitable for interface conversion
TTL convert to RS422, point-to-multipoint, full duplex communication, suitable for expanding nodes
Two groups TTL to RS422 conversion, point-to-point, full duplex communication, suitable for extending the communication distance of TTL
Application Examples
The TTL TO RS422 (B) can be widely used for point-to-point, point-to-multipoint, long distance cascaded communication network between two hosts, or between host and MCU/Peripheral. It also can be used in the application scenarios that require TTL to RS422 conversion such as Industrial Automation and IoT.
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