Mobile Applications
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Modbus Software Components for Developers

 
Settings Tab Settings

iPad Settings Tab

The Settings tab is where you configure the parameters for your Modbus/TCP server device.  This is the device that you want to communicate with over the network.

Name or IP Address

Enter the name or the IP address of your Modbus/TCP server here.  Tapping on this field will display a list of the most recent addresses that were entered.  Select from the existing addresses or enter a new one using the keypad.  If a name is entered, the IP address that it resolves to will be displayed below the text box.

Most Recent IP Addresses

Ping

The Ping button will send a ping request to whatever server address is specified.  The round trip time for the ping is displayed in the status bar at the bottom of the view.

Modbus/TCP Listen Port

Enter the listen port number of your Modbus/TCP server here.  The default decimal number 502 is the recommended port number for Modbus/TCP.

Connection Timeout

Select the amount of time allowed when connecting to your Modbus/TCP server.  The default time of 2 seconds is usually more than enough time to perform a connection.

Receive Timeout

Select the amount of time allowed for a response to be received when communicating with your Modbus/TCP server.  The default time of 1000ms is usually more than enough time to receive a response.

Floating Point Format

This selection specifies the byte order for registers that contain floating point values.  Not all Modbus devices support floating point values.  B3 (most significant byte) through B0 (least significant byte) are the bytes of a 32-bit, IEEE single precision floating point number shown in order as they come over the wire in a Modbus message.  Two consecutive registers are required to contain a floating point value.

Selection Description
B3:B2:B1:B0 Motorola big endian format.
B2:B3:B0:B1 Byte-swapped Motorola big endian format.
B0:B1:B2:B3 Intel little endian format.
B1:B0:B3:B2 Byte-swapped Intel little endian format.

Host IP Address

This field displays the IP address of your iPad or iPhone.

 

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