Rs232, RS485, thiab RS422 yog peb hom kev sib txuas lus tshwj xeeb tsim qauv los ntawm kis cov ntaub ntawv ntawm cov khoom siv hluav taws xob. Txawm li cas los xij, lawv txawv nyob rau hauv cov nqe lus ntawm kev sib txuas lus hom, kis nrug, cov ntaub ntawv, thiab suab nrov tiv thaiv kev tiv thaiv. Cov hauv qab no muab cov ncauj lus kom ntxaws kev sib piv qhia lawv qhov tseem ceeb tshaj plaws:
| Yam zoo | Rs232 | RS485 | Rs422 |
| Kev Sib Kis | 15 Metres | 1200 Metres | 1200 Metres |
| Cov ntaub ntawv tus nqi | 115.2 Kbps | 10 MBPS | 10 MBPS |
| Suab nrov tiv thaiv
|
Qi | Siab | Siab |
|
Kev sib txuas lus hom
|
Ib-xaus | Sib txawv | Sib txawv |
|
Kev sib txuas lus nodes |
Taw tes-rau-taw tes |
Ntau-Point (txog 32 nodes) |
1-rau-ntau (txog 10 tus neeg tau txais) |
| Qhia kev |
Tag nrho Duplex |
Ib nrab Duplex (Tag nrho lub duplex tau) |
Tag nrho Duplex |
| Txoj |
TXAWV, RXD, gnd |
Cov ntaub ntawv A, cov ntaub ntawv B, GND | TX +, TX-, RX +, RX-, gnd |
Rs232 rau RS485 RS422 serial converter
