Using the original SP3232, SP3485, stable performance, industrial-grade scenarios to achieve RS232 and RS485/RS422 inter-conversion, designed to automatically send and receive the conversion circuit, no need to “receive - send” control, so that the two ends of the interface communication more quickly and stably
Standard DB9 and 5.08mm plug-in terminals, the circuit adopts 5V power supply, the module needs to work in the 232 end access to the power supply voltage and reliability, signal isolation, so that the transmission of the signal is more stable.
On-board DC/DC power isolation, can provide a fixed isolation voltage and output short circuit protection, isolation without additional power supply.
The 232 end is equipped with overcurrent protection and surge protection. It can ensure stable output of current and voltage, and strong shock resistance.
RS485/422 terminal with over-protection, surge protection, lightning gas discharge protection circuit.
On-board TVS (transient voltage suppression), can effectively suppress the surge voltage and transient spike voltage in the circuit to protect the rear circuit and equipment.
On-board self-recovery fuse can ensure stable output of current and voltage, prevent over-current and over-voltage as well as electrostatic discharge, with strong anti-shock capability.
On-board GDT gas discharge tube can utilize the discharge tube to discharge the powerful lightning current into the ground, so that the subsequent circuits and equipments will not be damaged by the surge impact.
120R final resistor pad is reserved on the board, which can increase the stability of signal transmission and reduce interference.
Baud rate support range:
RS422: ≤ 2M bps; RS485: ≤ 2M bps (experimental environment)
On-board three LED indicators, used to indicate the sending and receiving status of the circuit signals
PWR light: red, power indicator
TXD light: green, 232 data sending indicator, data flow: RS422/485->232
RXD light: blue, 232 data receiving indicator, data flow: 232->RS422/485
DIN-rail ABS environmentally friendly housing, compact size, easy to install DIN-rail, using the original