2N StarGate/BlueTower v5.7 User Manual

Page 27

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6.
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10.

Shared serial interface. To switch to the basic CPU connect JP1 on the main CPU
card.
100Base–T Ethernet interface of the basic or enhanced CPU board.
Indicates (shining) that the extension unit is powered on.
Indicates (shining) that the extension unit's CPU is IDLE.
Indicates (flashing 1:1) that the CPU is not stopped.
Shared serial interface. To switch to the basic CPU connect JP1 on the main CPU
card.
100BaseT Ethernet interface of the extension unit of the enhanced CPU board.

COM1 Serial Interface Parameters

The COM1 interface is used as a local port for temporary connection of a PC (terminal)
for installation and servicing purposes and permanent connection of the SMS server
(supervision PC). It provides local monitoring, configuration, tracing and firmware
upgrade.

In the case of switch JP1, switch the COM1 interface to Ext. unit where you find the
console menu for basic Ext. unit IP settings. To locate JP1 please check the figure in
the Configuration Jumpers subsection below.

Basic CPU Connection

Transmission rate: 57.6 kbps
Bit format: start, 8bit, stop (no parity)
Signals: RXD,TXD,GND

Ext. Unit Connection

Transmission rate: 115.2 kbps
Bit format: start, 8bit, stop (no parity)
Signals: RXD,TXD,GND

Configuration Jumpers

There are two configuration jumpers on the enhanced CPU board. JP1 is intended for
switching the serial port between the CPU board and an optional extension board. JP2
is designed for restoring default settings of the enhanced CPU. JP2 is located on the
upper PCB. To restore the default values follow the steps below:

Switch off the GSM gateway.
Remove the CPU card and connect JP2.
Insert the CPU card and switch on the GSM gateway.
Wait for one minute and switch off the GSM gateway again.
Remove the CPU card and release JP2.
Insert the CPU card and switch on the GSM gateway.

Now the factory settings are restored on the enhanced CPU.

Tip

To restore the factory settings you can also get connected to the serial
console and select the Factory reset option.