Banner SureCross DX80 Wireless Networks - Manual (Page 79)

79
Banner Engineering Corp. • Minneapolis, MN U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
SureCross Wireless Network
Product Manual
Troubleshooting
LED Codes
LED 1 LED 2 Solution
Gateway, DX85: Power is on
Node: Good radio communication link
Gateway, DX85: Active Modbus communication
Device error.
If the LCD also reports BAD EE, contact the factory for replacement.
Gateway, DX85: Modbus communication error
For a Gateway system, a Modbus communications error indicates a bad transmission or checksum error
between the host and the Gateway device. For a GatewayPro system, a Modbus communications error indicates
a communications problem internal to the GatewayPro. For a Gateway and Ethernet Bridge system, a Modbus
communication error indicates a communication problem between the Gateway and the Ethernet Bridge.
Solutions:
1. The default communications settings for the RS485 port are: 1 start bit, 8 data bits, no parity, 1 stop bit,
and 19.2k baud. The DX80 Gateway uses Modbus RTU protocol for all communications. Supported Modbus
function codes are 3, 6, and 16.
2. Verify the DX80 model supports RS485 serial communications.
3. RS485 termination or biasing is not supplied on the Gateway and should be provided externally to the DX80.
(Termination is not required by the Gateway, proper biasing of the serial lines is required.)
4. Bad connection or bad cable.
Node: No radio communication
There are two settings on every Node device used to synchronize to the Gateway device:
• The Node must be bound to the Gateway.
• Each Node ID within that network must be set to a unique number.
Solutions:
1. If the Gateway and Node are less than two meters apart, device communication may fail (radios may saturate).
If the Gateway is less than two meters from another Gateway, send and receive transmissions between all
devices the Gateways communicate with fails.
2. The Gateway and Node may be too far apart to achieve synchronization – consult the factory for options.
3. Use a qualified antenna on both the Gateway and Node devices.
4. After any system parameter change, cycle the power to re-synchronize all devices.
5. When a Node loses synchronization, it is programmed to attempt re-synchronization for five seconds, then
sleep for fifteen seconds. Synchronizing may require up to twenty seconds.
6. Re-cycle power on the Gateway and Node devices.
Not blinking
yellow
GatewayPro: No Modbus communication
Solution:
1. The GatewayPro’s LED 2 should always be blinking yellow to indicate Modbus communication. If the LED 2
does not blink yellow, verify the baud rates, slave IDs, parity, and stop bits are set correctly.
2. Check the cables connecting the GatewayPro to the host device.