Product features
• Serial interface modules
(RS 232-C, RS 422/485-A, Current Loop)
• Full-duplex operation
• SSI interface module
• High interference immunity
• Electronic parameter chip
Short description
The SM 2x0/A series consists of serial and SSI interface modules that can be attached directly to a CPU module or
operated with all KEBA control systems by means of bus couplers.
SM 210/A and SM 230/A are serial interface modules and enable the connection of two RS 232-C or RS 422/485-A
serial interfaces. The two communication channels function independent of one another in full-duplex operation.
SM 220/A is a serial interface card. This module enables the connection of a serial 20 mA Current Loop interface. The
interface functions both for the transmitter as well as for the receiver in active or passive operation. DIP switches are
provided on the front for switching the operating mode. At a maximum transmission rate of 9.6 kbits/s, a line length of
up to 1.000 m is possible.
SM 250/A is an SSI interface module that enables the connection of up to 4 position measuring systems and is equipped
with sensor failure detection.
Environmental conditions
Operating temperature +5 °C … +55 °C
Storage temperature-40 °C … +70 °C
Relative air humidity 10 % to 95 % (non-condensing)
Vibration resistance / shock resistance Acc. to EN 61131-2
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