System Controller 11
■Monitor system operation status - An AC sensor card inside the PoE Power Rack samples the AC input voltage. The sampled signal is sent to the controller for processing. If the AC input voltage is lower than the
■Communicate with deamon systems - The controller supports interface to the Switch 8800 chassis through RS232 or RS485 cable connection. A cable is provided with the PoE Power Rack for attachment to the Switch 8800 (connect the RS232 connector end to the PoE Power Rack and connect the RJ45 cable end to the port labeled "Com" next to the PoE DC terminal block on the back of the Switch 8800). Using CLI commands, the user can receive and read system information or command the operation of the PoE Power Rack. The
There is one RS485 port and one RS232 interface on the rear panel of the PoE Power Rack (the cable provided with the PoE Power Rack is a RS232 cable type).
The RS485 and RS232 signals are described in Table 3 and Table 4. :
Table 3 RS485 Pin Definitions
Pin | Definition |
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|
1 | Transmit, + |
2 | Transmit, - |
3 | Receive, + |
4 | Ground |
5 | Not used |
6 | Receive, - |
7 | Ground |
8 | Not used |
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Table 4 RS232 Pin Definitions
Pin | Definition |
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|
1 | Not used |
2 | Receive |
3 | Transmit |
4 | Not used |
5 | Ground |
6 - 9 | Not used |
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