The ComBricks SCOPE alternative cable repeater (SALT) module makes it possible to use non-standard cable for PROFIBUS communication. Rotary switches adjust the impedance of the cable to match the PROFIBUS Spec. The PROFIBUS telegrams can be inspected with the built in oscilloscope, which is identical to the ComBricks SCOPE repeater module and accessible through the web server.
PROFIBUS networks that have been wired with the wrong cable, for example in situations where it is mandatory to use existing twisted pair cable, are not uncommon. The SALT repeater is an excellent tool to modulate PROFIBUS signals on non-standard media. Moreover, it can also be used to increase the idle-line voltage on segments where idle-line interference causes communication disturbances – which can be helpful even with standard PROFIBUS cable! Large terminal block connectors are provided to allow for different types of specialty cable.
The SALT’s repeater channel and the integrated oscilloscope are directly connected with the ProfiTrace OE core in the Head Station. Scope images and busmonitor data are directly available in the web server. The data traffic is constantly monitored for glitches, which are digitally filtered out. It is able to drive 31 devices and has increased signal strength.
2 Rotary switches, one for the middle resistor and one for the 2 pull-up resistors, manipulate the values of the termination network. The combination of both set the impedance and the level of the idle voltage. At the other end of the cable another SALT repeater or the T1-PEPPER has to be placed (to provide matching termination at both ends of the cable).Find out more about the ComBricks product family!
|Backplane||Support for up to 10 High Speed Modules, Up to 32 Modules Total|
|Cascading depth||No limit|
|Compatible backplane units||101-200011, 101-200023, 101-200012|
|Dimensions||140 x 110 x 25 mm|
|Interfaces||Removable screw terminals|
|Internal web server||
Frequency: 192 MS/s
Resolution: 50 mV
Differential Range: -6.436..6.436V
|Power consumption||+/- 400mA|
|Product power supply||Provided through the backplane|
|Product weight||120 g|
|Profibus networks||4 (set by dip-switches or webserver)|
|Redundancy||Max 10 cables activated by switch|
|Temperature range||Operating temperature: 0 - 60 °C|
|Transmission speed||9.6 kbps up to 12 Mbps (auto detect)|
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