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Channel switch for coupling of two redundant devices to one communication line

DOWNTechnical Details

For protocol converters in redundant operation, maximum uptime is ensured with the hot standby method. This means only one of the two devices is active at any time. The passive device monitors the active one and if the active one fails, the passive one automatically steps in and resumes communication.
The currently active protocol converter then sends a defined signal string to the channel switch initiating the switchover.
All communication in control and monitoring direction is then run by the second protocol converter.

Please note that in monitoring direction information is transmitted to both the active and passive protocol converters, irrespective of the position of the channel switch.

Technical Details

Interfaces RS232 (V.24)
9 pin SUB-D Socket (connects to DCE)
9 pin SUB-D Plug (connects to DTE)
Baudrate up to 38400 Baud
CD or DSR or RI for indicating the active channel to the protocol converters
Diagnostics 4 LEDs
Housing Aluminum passivated
Mounting 35 mm DIN-Rail
Dimensions W/H/D 44/105/104 mm
Power supply 24V DC ±10%, optional 12V DC ±10% external
Power input approx. 0,5 W
Environmental- / storage temperature 0° C to 55° C / -10° C to 70° C
Rel. humidity 5 % to 95 % non-condensing
Normen CE


Manual hardware/CS/en/cs_Manual_2_2_EN.pdf
Datasheet hardware/CS/en/cs_Datasheet_2_1_5_EN.pdf
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