Does ModBus act any differently when accessed through the Ethernet port?

Do you have any detailed information on how to access the protocols on the GE-2011C from a PC over the internet?

Do you have a step by step procedure to access a GE-2011C from your PC with the Tap Talk program?

Does ModBus act any differently when accessed through the Ethernet port?

The TCP/IP MODBUS protocol has an extra header inside the packet. The rest of the data is exactly the same as in serial MODBUS. If the communication software supports MODBUS TCP/IP then there is no difference in set-points addresses or data range between TCP/IP and serial MODBUS protocol. The tap-changer control uses the standard IP port 502 for communication.

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Do you have any detailed information on how to access the protocols on the GE-2011C from a PC over the Internet?

There are several settings that have to be configured prior to using the Ethernet communication protocols. The detailed description of the settings can be found in the instruction book under paragraph 9.5, Communication using an Ethernet Connection.

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Do you have a step by step procedure to access a GE-2011C from your PC with the Tap Talk program?

1. Run the TapTalk software.
The Access dialog screen will be opened.

2. In the PC communication device drop down list select TCP/IP protocol.

3. In the IP Port field enter: 8800.

4. In the IP Address field enter the IP address of the tap-changer control.

5. Click the "OPEN" button.

For pictures, please, refer to the paragraph 9.8 Overview of operation.

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I'm having difficulty communicating with the M-2001C using a Dymec 5843/5844 Fiber Link Repeater.
Please see the full description, and recommended corrections to this problem by following this link, or use the procedures described below.

The following are the recommended settings for these models to correctly communicate in a fiber loop or daisy chain configuration with an RS-232 null modem cable:

• Pin 7 of the DB9 cable must be removed on the male end that connects to the Dymec Link Repeater.
• Set both of the DTE/DCE switches to the left (closest to the silkscreen on the printed circuit board). This is a DCE configuration.
• Set all other DIP switches to the right (This is the off position. These functions are not needed.)

The following are the recommended settings for these models to correctly communicate in a fiber loop or daisy chain configuration with an RS-232 straight through cable.

• Set both of the DTE/DCE switches to the right. This is a DTE configuration.
• Set all other DIP switches to the right (This is the off position. These functions are not needed.)

Download full application note here.

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