Transcript
6. co n n e c t i on
3.Pinout definition： RS-232
1、RS-485 po i n t t o poi n t
RS-232 to RS-485 converter UT-2217 manual
T/R+ T/RGND GND
1. Brief:
UT-2217
Comply to RS-232C and RS-485, UT-2217 convert RS-232
RS-485
2、RS-485 p o int to m u l ti-point
into RS-485.With built-in TVS and protection for 600W on voltage possibly caused up by various reasons. Rs232 side in
T/R+ T/RGND GND
DB9 female, Rs485 in binding post. Plug-and-play and reliable
UT-2217
each line for lightning surge and surge voltage or transient over
RS-485
RS-485
and stable point-to-point and point-to-multipoint communication. For point-to-multipoint communication, as many as 32 interface facilities of RS-485 standard can be connected to each converter, and a high data transmission rate of 300-115.2KBPS can be achieved. Power indicator light and data traffic indicator light are also available with the converter for malfunction indication.
IV. Hardware installment and application Read the user manual carefully before installing the UT2217 photoelectric isolation interface converter. Connect the attached communication cable to RS-232 interface, and insert the power supply converter to power socket.
2. Specification:
UT-2217 working mode
1. Interface: RS-232C and RS485
1、Point to point
2. Rs232 side in DB9 female; Rs485 in binding post.
2、Point to multi-point
RS-485
3、UT-2217 t o UT-2 2 1 7
3.Protection: 600W surge protection each line RS-485.
For Rs485 bus, a terminal resister perhaps should be used
4. Operation mode: asynchronous half duplex.
Spec: 120 ohm; 1/4W
6.Indicator: Power (PWR), Send (TXD) and Receive (RXD).
5 . Appearence
7.Media: twisted pair cable or shielded cable. 8. Baud rate: 115.2K BPS to 300M,
9,600 BPS to 5KM.
RS-232
RS-485
CONVERTER PWR
9. Dimensions: 94mm*73mm*22mm.
RXD
MODEL：UT-2217 TXD
10. Working circumstance: -25℃to 70℃, Humidity 5%-95%. 11. Transmission distance: 0-1,200meters (115,200bps-9,600bps). 1
21mm
79mm 2
RS-485
4 3 2 1
GND GND T/RT/R+
51mm
RS-232
38.4K BPS to 2.4KM
RS-485
T/R+ T/RGND GND
T/R+ T/RGND GND
UT-2217
UT-2217
VI. Problems and resolutions 1. Data communication failure A. Make sure RS-232 interface connection is correct. B. Make sure RS-485/RS-422 output interface connection is correct. C. Make sure power supply is OK. D. Make sure the wire terminal connection is OK. E. Make sure the pilot lamp flashes when receiving. F. Make sure the pilot lamp flashes when sending. 2. Data missing or incorrect A. Check to see whether if the data rate and format at both ends of the communication equipment are consistent. 3
