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Step 1: Selecting Protocol and Baud Rate; Restoring the Default Settings

PROTOCOL DIP Switch Configuration

Depending on the communication protocol, used within the network the controller is connected to, there is a possibility to switch the protocol used by the controller so it matches the network protocol.

The protocol, which the controller operates with, and baud rate selection is made with the PROTOCOL DIP switch.

The 1st, 2nd, and 3rd switches are responsible for baud rate, while the 4th and 5th are responsible for the protocol. The 6th switch is responsible for restoring the default settings.

The PROTOCOL DIP switch settings for baud rate and protocol selection are shown in tables below.

1

2

3

Baud Rate

OFF (0)

OFF (0)

OFF (0)

Defined by user

OFF (0)

OFF (0)

ON (1)

76800

OFF (0)

ON (1)

OFF (0)

4800

OFF (0)

ON (1)

ON (1)

9600

ON (1)

OFF (0)

OFF (0)

19200

ON (1)

OFF (0)

ON (1)

38400

ON (1)

ON (1)

OFF (0)

57600

ON (1)

ON (1)

ON (1)

115200

Baud rate configuration

4

5

Protocol

OFF (0)

OFF (0)

Modbus RTU

OFF (0)

ON (1)

Modbus ASCII

ON (1)

OFF (0)

BACnet Master

ON (1)

ON (1)

BACnet Slave

Protocol configuration

Restoring Default Settings

To restore the default iSMA-B-FCU device settings, follow the steps below:

  • Turn off the power supply.

  • Set the 6th switch of the PROTOCOL DIP switch to ON.

  • Turn on the power supply, wait until the power LED is blinking.

  • Set the 6th switch to OFF to restore the default settings. To cancel the reset, turn off the power supply and set the 6th switch to the OFF position.

Out of the box device, as well as after restoring default values procedure, has the default settings as shown in the table below. All parameters can be changed using the iSMA Tool software with the controller connected, only the baud rate and used protocol can be modified with DIP switches.

Name

Default Value

User baud rate

76800

Stop bits

1

Data bits

8

Parity bit

0

Response delay

0

I1-I4 digital input counters

0

Values stored in the EEPROM memory

Cleared

I/O configuration

Cleared

Default values

For more information on changing the protocol parameters, check the FCU Application manual and FCU Hardware manual.

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