9. Install your wireless sensor network components. If the installation instructions are not included in this datasheet, refer to the product
manual.
For additional information, refer to one of the following documents:
• MultiHop Data Radio Quick Start Guide:
• MultiHop Data Radio Instruction Manual:
• MultiHop Register Guide (End User Edition):
Configure the DIP Switches
Before changing DIP switch positions, disconnect the power. DIP switch changes are not recognized until after power is cycled to the device.
Accessing the Internal DIP Switches
To access the internal DIP switches, follow these steps:
1. Unscrew the four screws that mount the cover to the bottom housing.
2. Remove the cover from the housing without damaging the ribbon cable or the pins the cable plugs into.
3. Gently unplug the ribbon cable from the board mounted into the bottom housing.
4. Remove the black cover plate from the bottom of the device's cover.
The DIP switches are located behind the rotary dials.
After making the necessary changes to the DIP switches, place the black cover plate back into position and gently
push into place. Plug the ribbon cable in after verifying that the blocked hole lines up with the missing pin. Mount the
cover back onto the housing.
DIP Switch Settings (MultiHop)
Switches
Device Settings
1
2
3
4
5
6
7
8
Serial line baud rate 19200 OR User defined receiver slots
OFF ¹
OFF ¹
Serial line baud rate 38400 OR 32 receiver slots
OFF
ON
Serial line baud rate 9600 OR 128 receiver slots
ON
OFF
Serial line baud rate Custom OR 4 receiver slots
ON ²
ON ²
Parity: None
OFF ¹
OFF ¹
Parity: Even
OFF
ON
Parity: Odd
ON
OFF
Disable serial (low power mode) and enable the receiver slots select
for switches 1-2
ON ²
ON ²
Transmit power
900 MHz radios: 1.00 Watt (30 dBm)
2.4 GHz radios: 0.065 Watts (18 dBm) and 60 ms frame
OFF ¹
Transmit power
900 MHz radios: 0.25 Watts (24 dBm)
2.4 GHz radios: 0.065 Watts (18 dBm) and 40 ms frame
ON
Application mode: Modbus
OFF ¹
Application mode: Transparent
ON
MultiHop radio setting: Repeater
OFF ¹
OFF ¹
MultiHop radio setting: Master
OFF
ON
MultiHop radio setting: Slave
ON ²
OFF ²
MultiHop radio setting: Reserved
ON
ON
¹ Default configuration
² Default configuration for the E housing models only
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.
Sure Cross
®
MultiHop H3E-NB-KR Data Radio
2
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