LED 1
LED 2
Definition/Solution
Flashing yellow
Flashing red
Flashing red
Device error.
If the LCD also reports BAD EE, contact the factory for replacement.
Flashing red
Gateway, DX85: Modbus communication error
For a Gateway system, a Modbus communications error indicates a bad transmis-
sion or checksum error between the host and the Gateway device. For a Gateway-
Pro 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 Gate-
way, proper biasing of the serial lines is required.)
4. Bad connection or bad cable.
Flashing red
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 communi-
cation 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-syn-
chronization 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 Mod-
bus communication. If the LED 2 does not blink yellow, verify the baud rates,
slave IDs, parity, and stop bits are set correctly.
SureCross Wireless I/O Network Manual
88
www.bannerengineering.com - tel: 763-544-3164
rev. I