ATC ATC-105N User manual

RS-232 TO RS-422/RS-485
Electromagnetic Isolation Converter
ATC-105N
User’s Manual
1.0 General introduction:
ATC-105N Electromagnetic Isolation Interface Converter is
compatible with RS-232C, RS-422, RS-485 standards and
capable of converting single end RS-232 signal into RS-422
or RS-485 signal of balanced signal. ATC-105N
electromagnetic isolated interface converter, capable of
RS-232 signal converter RS-422 or RS-485 signals, very
suitable to work in harsh electrical environments, or frequent
plug RS-232 cable for the occasion; application iCoupler &
reg technology can be simultaneously used to isolate the
logic signals and integrated isoPower isolated DC-DC
converter, so ATC-105N can provide total isolation solution
provides 2500V isolation voltage, the rapid Transient
Voltage Suppressor (TVS) can effectively inhibit lightning
and ESD, prevent lightning strike and common code
interference. Connect PC, IPC, or portable computer via a
DB9 female connector at RS-232 interface, and connect
RS-422, RS-485 end via convenient 4-bit terminal. The
RS-485 supports dual-line half duplex, namely, the only two
lines of RS-485 shall both send and receive data. Handshake
signal (e.g. RTS, Request To Send) usually controls the data
direction. The inner circuit of ATC-105N Electromagnetic
Isolation Interface Converter can detect data direction and
switch to control it automatically, conveniently to form a
RS-485 network without any shake hand signal. This kind of
RS-485 control is fully transparent and need no software
amendment for the former working modes basing on
RS-232.
ATC-105N Electromagnetic Isolation Interface Converter
can provide credible connection for point to point, point to
multi-point communication. The point to multi-point allows
connecting 32 RS-422 or RS-485 interface devices with data
transmission speed of 0-460KBPS. The dual color data flow
indication light can indicate malfunction. It supports
communication modes including RS-232C to RS-422,
RS-232 to RS-485 conversion.
2.0 Performance parameter
2.1 Interface feature:Compatible with EIA/TIA RS-232C, RS-
485/RS-422 standard
2.2 Electric interface: RS-232C interface DB9 Female connector
RS-422/RS-485 interface 4-bit terminal
2.3 Transmission media: twisted-pair cable or shielded cable
2.4 operation mode: asynchronous half or full duplex
2.5 Signal indication: 3 signal indication lights indicate TD, RD
and PWR
2.6 Isolation: isolation voltage 2500VRMS 500VDC sequence
2.7 Transmission speed: 0-230KBPS
2.8 Protecting grade: RS-232 interface+15KV ESD protection,
RS-422, RS-485 interface 600W lightning strike and surge
protection on each line
2.9 Transmission distance: 1.2 kilometers (9600BPS)
2.10 Size: 85mmx54mmx25mm
2.11 Working environment: -40℃to 70℃, 5% to 95% relative
humidity
3.0 Connector and signal
RS-232 DB9 Female Connector Pinout
DB9 Female
RS-232
PIN2
TXD
PIN3
RXD
PIN5
GND
RS-422/485 Terminal Pinout：
Terminal
No
1
2
3
4
RS-422
T+
T-
R-
R+
RS-485
485+
485-
-
-
4.0 Installation setup and application:
Before installing ATC-105N Electromagnetic Isolation Interface
Converter.Please read the user manual carefully.The product on
the + 9-24VDC socket power converter.RS-422 or RS-485 device
four terminals connected to pin definition instruction based on end.
ATC-105N product has 2 toggle switch. One on the left is the
selector switch for the RS-422 interface or 485 (dial to the left for
the RS-422, set aside to the right for the RS-485). The right is the
selector switch for switching baud rate less than 9600bps baud dial
to the left.(TS1).Dial to right is greater than 9600bps(TS2).
The user can choose according to their needs.
ATC-105N interface converter supports following communication
modes:
1. point to point/4 wire full duplex
2. point to multi-point/4 wire full duplex（Four wire RS-485）
3. point to point/dual-line half duplex
4. point to multi-point/ dual-line half duplex
RS-232 to RS-422 conversion: set ATC-105N interface converter
switch to RS-422 position.
RS-232 to RS-485 conversion: set ATC-105N interface converter
switch to RS-485 position.
5.0 Sketch map for communication connection
RS-232 to RS-422 conversion
5.1RS-422 point to point/4 wire full duplex communication
5.2. RS-422 point to multi-point/4 wire full duplex RS-485

5.3. Full duplex communication connection between
ATC-105N interface converters
5.4 RS-485 point to point/ dual-line half duplex
5.5 RS-485 point to multi- point /dual-line half duplex
5.6 Half duplex communication connection between
ATC-105N interface converters
6.0 Trouble shooting
6.1 Data transmission failure:
A. check to make sure the RS-232 interface is correctly connected
B. check to make sure the RS-422 interface is correctly connected
C. check to make sure the RS-485 interface is correctly connected
D. check to make sure the power supply is normal
E. check to make sure the switch setup is in the correct conversion
mode
F. Check to make sure the RS-422, RS-485 interface settings
switch is in the correct mode.
6.2 Data loss or error:
A. Check the consistency of the data speeds and formats at the
both ends of the data communication device.