Teltonika TFT100 Manuale utente

https://wiki.teltonika-gps.com/view/Testing_TCP_link_mode_with_RS232_and_RS485

Testing TCP link mode with RS232 and

RS485

Main Page > E-Mobility Trackers > TFT100 > TFT100 FAQ > Testing TCP link mode with RS232 and RS485

Contents

1 Understanding what is RS232/RS485 TCP Link mode

2 Setting parameters in configurator for TCP Ascii mode test

2.1 Message Timestamp

3 Establishing test link with server through Hercules

4 Sending from server to external device over Hercules

5 Sending from external device to server over Terminal

5.1 Links for download

Understanding what is RS232/RS485 TCP Link mode

In this mode link with external device (for example PC) using text messages can be established.

TFT100 has to be connected to the external device through RS232 or RS485. Any string of data

coming to RS232 or RS485 will be routed to server (if link is currently active). Messages that are

exchanged between the device and server, have to be packed in Codec.12 format. Here for TCP link

establishment we will be using Hercules. For sending messages from external device to server over

the TFT100 Terminal will be used.

Setting parameters in configurator for TCP Ascii mode test

First of all, in the TFT100 configurator you have to set parameters for RS232 or RS485 (depends on

which RS232 or RS485 port you are using) in global parameters window.

Here in RS232 settings section Baudrate can be chosen to any available. Mode has to be chosen to

TCP Ascii.

Message Timestamp

Message Timestamp parameter is used to determine if it is necessary to include timestamp in RS232

TCP packet when sending to server. If parameter is Enabled, then Codec 13 is used for data sending.

Otherwise, Codec 12 is used.

You can also use RS485 which is also suitable for Ascii TCP Link mode. In order to make a link

between the device and server, Domain and Target Server Port have to be set in the working device

profile, GPRS data sending Settings section. When right parameters are set, you can save the

configuration to the device.

Establishing test link with server through Hercules

In this case we have a PC that is considered to be a server and an external device at the same time.

When the device is configured and connected to the external device, next what we have to do is to

start Hercules (Figure 2) which is in server side and will be used for sending/receiving messages.

(Please keep in mind that external device RX cable needs to be connected to the TFT100 device TX

cable and external device TX cable connected to TFT100 RX cable.) Here you have to choose TCP

Server section from the upper menu. In the marked fields:

1. Write your server (PC) port and press Listen button;

2. In the Client connection status you will be able to see if a connection between server and device

has started successfully;

3. In the Send field you can write a message that is packed in Codec.12 format which will be sent to

TFT100 device.

Sending from server to external device over Hercules

When sending a message from Hercules, first you have to pack it in Codec.12 format. If you want to send a message to external

device over the device from server, a packed message should be pasted into the Send field in Hercules (Figure 2, marked field 3).

The HEX format box should be unchecked if the text is in HEX format for example:

00000000000000260C01050000001e48656c6c6f2c206c657473207465737420544350206c696e6b206d6f64650100001aef

etc. When you press Send button, you will see your message in the Sent data field (Terminal).

If the message is sent successfully to device, you can check it in the Terminal window.Connect Port ½ cable one end to RS232

RX/TX cables on TFT100 device and then connect USB side to computer. Please find which port is used for Port ½ cable in device

manager. Please select correct COM Port (1). In this case we use COM21. Then press connect (2).

Open Hercules application and just type your message in the marked field (3) and press Send button (4). If sent successfully, you

will see it in Hercules Sent data field (Figure 4). For example test text will be sent: Hello, lets test TCP link mode. In Codec.12

format it looks:

00000000000000260C01050000001e48656c6c6f2c206c657473207465737420544350206c696e6b206d6f64650100001aef

On terminal you should now receive message:

Sending from external device to server over Terminal

For testing data sending from external device to server, enter text you want to send on Terminal and press send.

You can check if data is received to server in Hercules. Sample text: Hello, lets test TCP link mode. Please keep in mind, that

special chars (ASCII Names) needs to be marked.

Links for download

Hercules SETUP utility

Terminal download

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