5
4 INSTALLATION
4.3
Power up and diagnostics: A power supply is not provided with the EMB Hub, therefore it is up to the
installer to provide the required 24VDC. After the power is applied, the green “Alive” light in the upper
right of the Modbus should come on and the LCD display will display a series of diagnostic screens
ending with the following message on the LCD display (this boot sequence may require up to
20 seconds to complete):
4.4
Verify connected devices: To verify that the Modbus devices are installed and reporting correctly, use
the Modbus status utility on the EMB Hub server. To do this test, follow these steps:
4.4.1
Press and release the menu (top) button on the EMB Hub. The following will appear on
the LCD display:
4.4.2
Press the menu (top) button several more times until the LCD display shows the
following message:
4.4.3
Press the select (bottom) button on the server and the unit will begin the diagnosis of the
Modbus loop. After the check is completed, the unit will display the following message:
This indicates that the EMB Hub has loaded properly and is ready for configuration and connection to the
network and sensors. If the “Alive” light does not come on or the LCD display does not cycle to the above
screen, verify that the power cord is plugged in. If after cycling the power the unit still does not power up
(or if an error message appears in the LCD display) contact technical support. After the A8810 has been
powered up for a minute, the green Alive LED should blink slowly once per second during normal operation.
•
Alive:
blinks once per second while the system is operating correctly.
•
Alarm:
blinks to indicate a problem.
•
Ethernet Link/Act:
On when connected to a hub or switch, off when not connected. Blinks when LAN
traffic is being sent or received.
•
RS485 RX/TX
. The 485TX led should blink slowly once per second during normal operation. The RX led
will blink when external Modbus devices communicate with the EMB Hub.
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WEB
VERSION