Instruction Manual
Table Of Contents
- Contents
- 1 The Sure Cross® Wireless Network
- 2 Features
- 3 Setting Up Your Wireless Network
- 3.1 Mixing Performance and Non-Performance (150 mW) Radios in the Same Network
- 3.2 Apply Power to the Gateway or Node
- 3.3 Bind Radios to Form Networks
- 3.4 LED Behavior for the Gateways
- 3.5 LED Behavior for the Nodes
- 3.6 Conducting a Site Survey (Gateway and Nodes)
- 4 Installing Your Sure Cross® Radios
- 5 Advanced Setup Options
- 5.1 DX80 Menu Structure
- 5.2 Web-based Configuration for the GatewayPro on DX83
- 5.3 Binding Mode: What does it do?
- 5.4 Setting the Network ID in Extended Addressing Mode
- 5.5 Manually Assign a Binding Code to a Gateway
- 5.6 Manually Assign a Binding Code to a Node
- 5.7 Setting the Maximum System Devices
- 5.8 Storage and Sleep Modes
- 5.9 Modbus Holding Registers
- 5.10 Modbus Communication Parameters
- 5.11 Default Output Conditions
- 5.12 Defining the Units
- 6 Product Support and Maintenance
- Index
• One flash per second: Weak signal strength
• Solid amber LED: No radio communication detected
3. To exit the Site Survey, set the Gateway's rotary dials to 00. Otherwise, after 15 minutes the Gateway automatically
exits Site Survey mode.
The LED
flashes green to indicate the Gateway is in standard operating mode.
3.6.3 Conduct a Site Survey Using Modbus Commands
Use Modbus commands sent from the host system to start a Site Survey.
To start a Site Survey using a Modbus write holding register command, send a control code of 32 (0x20) and the Node
number 1 through 47 (0x01 to 0x2F) to the Gateway Modbus holding register for I/O 15.
Modbus Register
[15:8] [7:0]
I/O 15 Control Code Data Field
I/O 15 Control Messages
Control Code Data Field Restrictions Description
32 Node # 1–15 Gateway only Enable Site Survey between Gateway and Node defined by the data field. All error
messages from the Gateway are ignored when running Site Survey.
Only one Node can participate in Site Survey at a time. To disable the Site Survey, use
control code 0x20 with Node 0. A Node must be enabled to run the Site Survey, then
disabled before selecting the next Node.
3.6.3 Example Command
Modbus Register
I/O 15 32 02
When Site Survey runs, the accumulated results are stored in the Gateway’s I/O 7 and I/O 8 holding registers. The LEDs on
the both the Gateway and the Node’s front panel display the signal strength for the wireless RF link. The quality of the
communications link is indicated by:
Green LED = excellent signal strength
Amber LED = good signal strength
Red LED = poor signal strength
The signal strength is the transmitted signal strength relative to the ambient RF signal present in a
specific location, or noise
floor.
The Gateway also displays the Site Survey results on the LCD (for models with an LCD). For one transmit and receive
interval, the Gateway saves the lowest signal strength. The LCD and Modbus registers contain the results of the last 100
samples. The totals are a running tally of the last 100 samples and are continuously updated. Four categories are displayed:
G (green) = excellent signal strength
Y (yellow) = good signal strength
R (red) = poor signal strength
M = Missed packet
To disable Site Survey, send control code 32 (0x20) and Node number 0 (0x0), which is represented as 8192 (0x2000).
3.6.3 Site Survey Data Holding
With Site Survey active, registers I/O 7 and 8 are Site Survey data holding registers that store the accumulated Site Survey
results. Error collections in holding register 8 are saved when Site Survey runs and restored after Site Survey is disabled.
Sure Cross
®
Performance DX80 Wireless I/O Networks
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