GC-ATC-106 User`s Manual

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GC-ATC-106 User`s Manual | Manualzz
GC-ATC-106
RS-232 to RS-485 Interface Converter
2.3 Data Rate: 300 to 115.2 KBPS, up to 4,000 feet at
User's Manual
1.0 General Description
2.8 Environment: 0° to 50° C, 5% to 95% relative
2.4 Sending Control
humidity
GC-ATC-106 does not need RTS to control the RS-485
2.9 Connection Diagram
driver. The RS-485 driver is automatically enabled during
3.0 GC-ATC-106 connecting other RS-485 device
each spacing state of SD line (also called TD) on the
GC-ATC-106
RS-232 side. The GC-ATC-106 has an internal connection
DB-9 Male
to prevent data transmitted from the RS-232 port from being
PIN2(485-)----------------------- 485-
echoed back to the RS-232 port. The GC-ATC-106 is used
PIN7(485+)-----------------------485+
as a two wire (half duplex) RS-485 Converter.
The GC-ATC-106 is a powered RS-232 to RS-485 interface
converter. GC-ATC-106 can convert the TD and RD signals
2.5 Operating Distance
of RS-232 into balanced half-duplex RS- 485 signals.
Data Rate (KBPS): 19.2
9.6 4.8
2.4
Maximum Distance (feet): 4,000 6,000 8,000 10,000 (using
2.0 Specifications
2.7 Dimensions: 88mmx33mmx17mm
19,200 BPS.
24 AWG wire)
2.1 Interface
Conforms to EIA RS-232 and RS-485 standards
2.6 Power
2.2 Connectors and signals
GC-ATC-106 is powered from the RS-232 data TD or
The GC-ATC-106 has a DB-9 female connector on the
handshake lines. It will try to get its power from RTS or DTR
RS-232 side and DB-9 male connector or a terminal block
(at least +5.5V or -5.5V in the quiescent state). If there are
connector
no RS-232 control signals (DTR or RTS) available the
on the RS-485 side.
GC-ATC-106 will get power from the data input TD pin (at
RS-232 Side:
least -5.5V in the quiescent state). For this kind of power
Connector: DB-9 Female.
stealing devices, the sufficient power is needed to operate
Signals: Use Pins 3 (RD) and pin 2(TD also called SD)
the device. In some case maybe no handshake lines are
Pins 7 (RTS) and 8 (CTS) are tied together Pins 4 (DTR), 6
available and the TD can not drive GC-ATC-106, then an
(DSR), and 1 (CD) are tied together.
external 5VDC/40mA power supply can be connected to
RS-485 Side: Connector: DB-9 male connector or
two terminals on the RS-485 connector between terminals
4 position terminal block -- 485+.485-.+5V.GND .
+5VDC and GND .
RS-485 device

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