Switches

Device Settings

1

2

3

4

5

6

7

8

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.

Disable Serial

Disable an unused local serial connection 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 four 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 60 milliseconds. To increase throughput, set the frame timing to 40 milliseconds.

Important: Prior to date code 15341 and radio firmware version 3.6, the frame timing was 40 ms (OFF) or 20 ms (ON).

Use the following wiring diagrams to first wire the sensors and then apply power to the Sure Cross devices.

Wiring Power and Ground

Connecting power to the communication pins will cause permanent damage. For

FlexPower devices, do not apply more than 5.5 V to the gray wire.

The FlexPower MultiHop radios operate equally well when powered from the brown or gray wire; it is not necessary to supply both. The power for

the sensors can be supplied by the radio's SPx terminals or from the 10 to 30 V DC used to power the radio.

5-pin M12/Euro-style Male Connector

Pin

Wire Color

Wiring Description

1

4

5

3

2

1

Brown (bn)

10 to 30 V DC

2

White (wh)

RS-485 / D1 / B / +

3

Blue (bu)

DC common (GND)

4

Black (bk)

RS-485 / D0 / A / -

5

Gray (gy)

3.6 to 5.5 V DC

Wiring for DX80...M-HxC Models for Power and Ground

Connecting power to the communication pins will cause permanent damage. For

FlexPower devices, do not apply more than 5.5 V to the gray wire.

The FlexPower MultiHop radios operate equally well when powered from the brown or gray wire; it is not necessary to supply both. The power for

the sensors can be supplied by the radio's SPx terminals or from the 10 to 30 V DC used to power the radio.

Terminal

Wiring Description

Terminal

Wiring Description

V+

10 to 30 V DC

Rx/-

RS-485 / D0 / A / -

P/N 152416 Rev. J

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