●
1kV= or 3kV= (dependent on version) galvanic isolation in power supply channel between USB and RS485/RS422,
●
RS-485/RS-422 interface connection via screw terminal block (section 1mm²),
●
USB interface connection via USB-AA cable,
●
Casing dimensions (W x D x H) 91mm x 21mm x 57mm,
2.2. DESCRIPTION
ADA-I91402 converts
USB to RS-485/RS-422 standard without interference of data format and it is automatically detected by the
computer system after connecting to USB socked (Plug&Play device).
The converter transmits
RX
,
TX signals and two additional RTS, CTS or DTR, DSR set by SW2 microswitch.
For communication with other devices ADA-I91402 uses data transmission line like:
●
RX+,RX-,TX+/DATA+,TX-/DATA-
(RS-485/422),
●
CTS+/DSR+,CTS-/DSR-,RTS+/DTR+,RTS-/DTR-
(RS-422)
There is also the possibilities of looping the
DTR with DSR signal or RTS with CTS signals
.
This converter doesn't require external power supply (it is powered from USB bus) and it uses asynchronous baud rate up to 921,3
kbps (drivers for STANDARD baud rate) / 1500000 bps (drivers for PROFIBUS baud rate). USB cable with A-type plugs enables
simple connection to a computer and on other side simple connection the RS485/422 bus provide plug-in screw terminal block.
The converter has implemented overvoltage protection RS485/RS422 interface, 2,7kV= optoisolation in signal channel between USB
and RS-485/422 interface and 1kV= or 3kV= galvanic isolation (dependent on version).
Together with ADA-I91402 we provide the drivers, which after installation, create in operating system additional COM port on the next
free number e.g. COM3. Can be use as standard COM port, it isn't hardware port but virtual, created in Windows system and some
applications running in DOS (use this port), can operate improperly.
Support ended for Windows 98, ME, NT systems.
2.3. SUPPORTED OPERATING SYSTEMS
For ADA-I91402 converter, are available serial virtual ports drivers for operation systems:
-Windows: 98, ME, NT, 2000, XP, Vista, 7, 2008, 8, 8.1, 10; Windows CE,
-Windows Server: 2003, 2008 R2, 2012 R2, 2016,
-Linux: from Ubuntu 11.10, kernel 3.0.0-19 drivers implemented in system kernel,
-Raspbian - Raspberry Pi,
-Mac: OS X 10.3 to 10.8, OS X 10.9 and other.
3. CONFIGURATION
For configuration of ADA-I91402 are used two microswitch SW1 and SW2.
Fig. 1. ADA-I9140 view in version v.-2-x
3.1. ADDITIONAL SIGNAL CONFIGURATION
For configuration of additional signals is used 6-position microswitch SW2. A table below shows typical configuration of additional
signals RTS, CTS, DTR, DSR. Other configuration possibilities should be agreed with Technical Support – +48 41 362-12-46.
The 6-position microswitch SW2 is located on one side of the converter.
4
ADA-I91402
2
1
m
m
91mm
RS-485
2-WIRE
RS-485 4-WIRE
or
RS-422
ADDITIONAL
SIGNALS IN
RS422 STANDARD
5
7
m
m
102 mm
ADA-I91402
PWR
U
S
B
Tx+/DATA+
Tx-/DATA-
Rx+
Rx-
RTS+/DTR+
RTS-/DTR-
CTS+/DSR+
CTS-/DSR-
GND
100R
(SW1)
USB to RS-485/422 ISOLATED CONVERTER
Tx
Rx
RTS/DTR
CTS/DSR
(SW2)
