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Overview
The Transio A52/A53 are smart RS-232 to RS-422/485 bi-directional
converters that allow one RS-232 port to be converted into an RS-422 or
RS-485 port. With the A52/A53 you can control up to 32 devices within
1.2 km in a multidrop environment.
To ease 2-wire RS-485 half-duplex control, Automatic Data Direction
Control (ADDC) intelligence, which does not requires a baudrate switch
setting, is designed into each A52/A53 to simplify your RS-485 software
programming. Your applications can easily manage data transmitting and
receiving via the half-duplex RS-485 port without using additional code.
Compared to other products that require using switches to set the clock
speed manually, the A52/A53 let you avoid many development and
maintenance hassles.
To meet the high reliability required by harsh industrial environments, all
RS-422/485 signals provide TVS protection. In addition, the A53 provides
2 KV of optical isolation protection for all signals at the RS-422/485 end.
Features and Specifications
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Serial interface: RS-232, RS-422/485
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Port types:
RS-232: RJ45;
RS-422/485: RJ45 or Terminal Block
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High speed, baudrate up to 921.6 Kbps; no switch setting needed
•
Signals:
RS-232: TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND;
RS-422: TxD+(B)/-(A), RxD+(B)/-(A), RTS+(B)/-(A), CTS+(B)/-(A),
GND;
RS-485-Data+(B)/-(A), GND
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Supports Automatic Data Direction Control (ADDC) with no baudrate
switch settings for RS-485
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RS-485 data control modes: auto (ADDC) or by RTS
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RS-422 supports CTS, RTS signals for hardware flow control
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LED indicators for power and 4 signal states (TxD, RxD, RTS, CTS)
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All RS-422/485 signals provide TVS protection.
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All RS-422/485 signals support up to 2 KV (DC) of optical isolation
protection (A53 only)
•
Provides overloading protection when there are 2 signals shorted
together at the RS-422/485 end
•
Built-in 120 ohm termination resistors for RS-422/RS-485 (selectable
by jumper in RS-485 mode)
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Supports up to 32 units connected in an RS-485 multidrop network
•
CE/FCC approval
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9 V 1.5 A UL 110/230 V power adaptor can support up to 4 converters
