【 Weak current College 】 485FO RS232 to RS485 converter-install connection 】

Simple introduction-RS232 to RS485 485FO Converter: sends data TD and receive data converts differential RD-duplex RS232 RS485 signal, the signal transmission distance is significantly longer, is a distance point to multipoint communications. Need external + 5V power supply, completely photoelectric isolation; it does not need RTS signal-controlled, ensuring broad adaptability of software.
RS232 to RS485 485FO type converter's details 485FO-RS232 to RS485 Converter:
First, the introduction
485FO interface converter RS232-RS485 converter is, you can send data to TD and receive the data converts differential RD-duplex RS232 RS485 signal, the signal transmission distance is significantly longer, is a distance point to multipoint communications. Need external + 5V power supply, completely photoelectric isolation; it does not need RTS signal-controlled, ensuring broad adaptability of software.

2. main characteristics
U add + 5V power supply, completely photoelectric isolation.
U-duplex, half-duplex universal. Full-duplex job, the application can be as RS422.
U receive send automatic conversion, no need RTS control, software compatible with a wide range.
U built-in protection against lightning strike 600w and ± 15KV ESD.
U auto sleep technology (shutdown), extend product life.
U intelligent load technology, can transfer over 1200m (1200bps).
U high speed conversion technology, ensuring that transmission DC-115.2kbps.

Third, performance parameters
Interface compatible with EIA/TIA RS232 standard and RS485 standard full duplex or half duplex communication, transparent interface
Transfer rate: DC-115.2kbps
Transmission distance: 1200m (1200bps)
Size: 66mm×33mm×17mm
Use environment:-25 ° c to 70 ° c, relative humidity 5%-95%

4 converter dimensions


5. connect the connector and wiring definition
485FO interface converter RS232 DB9 pass and use mouth connected, 7 and 8, 1, 4 and 6 pin shortedis internal, the other end as RS422 terminals:, + A,-B, a + Y,-Z, V + and V-.

VI. installation and connection
485FO interface converters can be plugged directly into a DB9 RS232C port pin type, and lock screws, it can pose to other RS485 devices point-to-point, point-to-multipoint communication network, full-duplex (jumper 2 and 3 shorted, jumper at the terminal back) connection principle is: "fat" by the other side of the "debt" and "your" meet each other's "fat", "+ A + received the" other side "Y", "B"-each other-the "-Z", "and" next "and". Jumper 1 and 2 shorted time to half-duplex, connection principle is: "+ A" to add A "+" and "-B" received "-B".
V + next + 5V, V-power. Note for + 5V power supply.

1 RS232 device through 485FO interface converter and RS422 full duplex connection between devices

2 RS232 device through 485FO interface converter and RS485 (2-half-duplex) device is connected

7. malfunctions and exclude
1. data communication failed
A, check whether the correct line RS232 interface.
B, RS232 wiring is correct whether grounding, + A and B are received anti-, the connector is not short circuit, circuit breakers, etc.
C, RS232 interface is standard, TD, DTR, RTS level is within ± 5V.
2. data error missing
A, check traffic data format, rate for consistency.
B, distance is too long, the node is too much, the rate is too high.
C, wired network presence strong interference.