Switches
Device Settings
1
2
3
4
5
6
7
8
900 MHz: 1.00 Watt (30 dBm) transmit power **
2.4 GHz models: 40 ms frame
OFF*
900 MHz: 0.25 Watts (24 dBm) transmit power
**
2.4 GHz models: 20 ms frame
ON
Application mode: Modbus
OFF*
Application mode: Transparent
ON
MultiHop radio setting: Repeater
OFF*
OFF*
MultiHop radio setting: Master
OFF
ON
MultiHop radio setting: Slave
ON
OFF
MultiHop radio setting: Reserved
ON
ON
* Default configuration
** For 2.4 GHz radios, the transmit power is fixed at 0.065 Watts (18 dBm). DIP switch 5 is used instead to set the frame
timing.
Application Mode
The MultiHop radio operates in either Modbus mode or transparent mode. Use the internal DIP switches to select the mode
of operation. All MultiHop radios within a wireless network must be in the same mode.
Modbus mode uses the Modbus protocol for routing packets. In Modbus mode, a routing table is stored in each parent
device to optimize the radio traffic. This allows for point to point communication in a multiple data radio network and
acknowledgement/retry of radio packets. To access a radio's I/O, the radios must be running in Modbus mode.
In transparent application mode, all incoming packets are stored, then broadcast to all connected data radios. The data
communication is packet based and not specific to any protocol. The application layer is responsible for data integrity. For
one to one data radios it is possible to enable broadcast acknowledgement of the data packets to provide better
throughput. In transparent mode, there is no access to the radio's I/O.
Baud Rate and Parity
The baud rate (bits per second) is the data transmission rate between the device and whatever it is physically wired to.
Set the parity to match the parity of the device you are wired to.
Disable Serial
If the local serial connection is not needed, disable it to reduce the power consumption of a data radio powered from the
solar assembly or from batteries. All radio communications remain operational.
Receiver Slots
The number of receiver slots indicates the number of times out of 128 slots/frames the radio can transmit to its parent
radio. Setting a slave’s receiver slots to 4 reduces the total power consumption by establishing that the slave can only
transmit to its parent four times per 128 slots.
Transmit Power Levels/Frame Size
The 900 MHz data radios can be operated at 1 watt (30 dBm) or 0.250 watt (24 dBm). For most models, the default
transmit power is 1 watt.
For 2.4 GHz radios, the transmit power is fixed at 0.065 watt (18 dBm) and DIP switch 5 is used to set the frame timing.
The default position (OFF) sets the frame timing to 40 milliseconds. To increase throughput, set the frame timing to 20
milliseconds. Note that increasing the throughput decreases the battery life.
Wiring Your SureCross
®
Device
Use the following wiring diagrams to first wire the sensors and then apply power to the SureCross devices.
SureCross MultiHop Data Radio
4
www.bannerengineering.com - tel: 763-544-3164
P/N 148947 Rev. C
