GridConnect GC-ATC-108N User Manual

GC-ATC-108N
RS-232/RS-422/RS-485
Industrial Wall-mounted Photoelectric
Isolation Interface Converter
User's Manual
1.0 General introduction
GC-ATC-108N Photoelectric 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 difference. The built in photoelectric isolator
can offer 3500V isolation voltage and the grade 2 rapid Transient
Voltage Suppressor (TVS) can effectively inhibit lightning and
ESD, provide 1000W lightning strike and surge protection power
on each line and 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 6-bit plug-in 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 GC-ATC-108N Photoelectric 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.
GC-ATC-108N Photoelectric Isolation Interface Converter can
provide credible connection for point to point, point to multi-point
communication. The point to multi-point allows connecting 128
RS-422 or RS-485 interface devices with data transmission speed
of 0-115.2KBPS. The 3 power supply and 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
The interface is compatible with EIA/TIA RS-232C, RS-
485/RS-422 standard
2.2 Electric interface
RS-232C interface RJ-45 connector DB9 cable
RS-422/RS-485 DB9 interface or 6-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 TXD, RXD and PWR
2.6 Isolation
Isolation voltage 3500VRMS 500VDC sequence
2.7 Transmission speed
115.2K BPS to 1.2KM
38.4K BPS to 2.4KM
600 BPS to 5KM
2.8 Protecting grade
RS-232 interface:
600W lightning strike and surge protection on each line
RS-422, RS-485 interface:
1000W lightning strike and surge protection on each line
2.9 Transmission distance
0-5 kilometers (115200-600BPS)
2.10 Size
95mmx85mmx26mm
2.11 Working environment:
-25℃ to 70℃
5% to 95% relative humidity
Grid Connect Revision A, 6/2/11
3.0 Connector and signal
RS-232 DB9 Female Connector Pinout
DB9 Female RS-232
PIN2 TXD
PIN3 RXD
PIN5 GND
RS-422/485 Pinout: (6-bit terminal from the left to right))
Terminal
1 2 3 4
No
RS-422 T+ T- R+ R-
485
RS-485 485- - -
+
RS-422/485 Pinout: (DB9 male connector)
DB9
RS-422 RS-485
PIN
PIN1 T- 485-
PIN2 T+ 485+
PIN3 R+ -
PIN4 R- -
PIN5 Protection GND Protection GND
4.0 Installation setup and application:
Connect the communication cable of the product with
RS-232C interface according to the DB9 Female Connector
Pinout in section 3.0. Connect the RS-422/485 end with RS-422
or RS-485 device according to the RS-422/485 Pinout in section
3.0. Connect the power adapter with DC-IN socket. Since the
inner conversions of the GC-ATC-108N are self-adapting, there is
no user setting necessary for RS-232 to RS-422/485 conversion.
The GC-ATC-108N interface converter supports following 4
communication modes:
1. point to point/4 wire full duplex
2. point to multi-point/4 wire full duplex
3. point to point/dual-line half duplex
4. point to multi-point/ dual-line half duplex
5 6
VIN GND
VIN GND