How to set terminal communication parameters? Urgent!!! 15

For each router, there is a console interface through which the administrator can connect the control port to the main port of a comma terminal through the RS-232 cable, and configure the router through this terminal.

Speed: 9600bps

Starting position: 1 position.

Data bits: 8 bits.

Stop bits: 1 or 2 bits.

Check: None.

After the terminal communication reference refers to the return is set, connect the router console, please turn on the terminal power first, then turn on the router power, and then enter the initial configuration.

For each router, there is a console interface that allows the administrator to connect the control port to the main port of a terminal through an RS-232 cable, and configure the router through this terminal.

The terminal communication parameter is set to:

Speed: 9600bps

Starting position: 1 position.

Data bits: 8 bits.

Stop bits: 1 or 2 bits.

Check: None.

After the terminal communication parameters are set, connect the router console, turn on the terminal power first, and then turn on the router power, and then enter the initial configuration.

The communication setting method in the manual parameter setting of the POS machine is as follows:

One. GPRS parameter settings:

Setting: cmnet

2.Host IP: or.

3.Host port: 9909;

4.Backup IP: or.

5.Backup port: 9909

The access number remains unchanged and can be cleared if it cannot be connected.

Two. CDMA parameter settings:

Number: 777 or not.

2.Host IP: or.

3.Host port: 9909;

4.Backup IP: or.

5.Backup port: 9909

6.Username: card

7.User password: card

2.Subnet Mask:

3.Gateway: Set as the default gateway for the router (for example: or ;

Check the path of the gateway with a computer: Same as above.

4.Primary IP: or.

5.Primary server port: 9909

6.Backup server IP: or.

7.Backup server port: 9909

Parameter settings:

Setting: cmnet

1-2.Host IP: or.

1-3.Host port: 9909;

1-4.Backup IP: or.

1-5.Backup port: 9909

The access number remains unchanged and can be cleared if it cannot be connected.

Parameter setting: number: 777 or not set.

2-2.Host IP: or.

2-3.Host port: 9909;

2-4.Backup IP: or.

2-5.Backup port: 9909

2-6.Username: card

2-7.User password: card

3-1.Local IP: Set to the address in the same network segment as the gateway (for example: Or use a computer to view the path of the local IP: Control Panel - View Network Status and Tasks - Local Connection - Details. Check the IPv4 address.

3-2.Subnet Mask:

3-3.Gateway: Set as the default gateway for the router (for example: or ;

Check the path of the gateway with a computer: Same as above.

3-4.Primary IP: or.

3-5.Primary server port: 9909

3-6.Backup server IP: or.

3-7.Backup server port: 9909

Method steps.

1. Click Start Attachment Communication HyperTerminal.

2. Click to enter "HyperTerminal", and the red box shows the place you want to name HyperTerminal.

3. In the "Connection Description" window, you only need to write any name in the "Name" column, and then click "OK".

4. After entering the "connect to" window, there are entries such as "country (region)", "area code", "**number", "use when connecting", etc., which only need to add the content of "**number" and "use when connecting" to select, 5. Enter any number in the "**number", and in the "use when connecting", you need to choose the corresponding com port, and select the com1 port here.

6. Fill in the corresponding content in the "Connect to" window and try to do so, and then click "OK".

7. After entering the "COM1 Properties" window, the main thing is to set the port.

8. In the "com1 properties" window, you only need to click the "Restore to default" button, and the parameters can be automatically restored to the values that conform to the connection attributes, or you can set them manually.

9. After setting the parameters in the previous section, click OK to enter the command line operation window of the hyperterminal connection, which indicates that the hyperterminal connection has been established.

10. After entering the command line operation window, click any blank space in the window to ensure that the cursor is in the window, and then tap continuously to configure and operate the connected network devices.

In general, there is a small hole in the back of the router that writes the E text starting with r.

If you have this small hole, take a pen, the kind with a long nib, put it in, and feel that something is resisted, and it's okay, stay here for 10 seconds, then unplug it, wait 10 seconds, plug it in, and wait for 10 seconds.

Or go directly into the router from IE and restore the factory settings.

There is a parameter called ilen in writetoport(), which indicates the length of the character to be sent, you debug it to see if there is a problem with that value, and if there is a problem with the argument when you call it.

It's only 16 characters at a time, and if you have more, it will fail to send or something.

For serial communication, if you send 100 characters, it may take more than one time for the receiver to receive it, and it may accept 16 for the first time and the rest for the second time.

You send the ** and the properties of the control to see, and your description alone cannot explain the reason.

Set the receive and send buffer lengths.

This is not required, only the serial port parameters of the two devices directly connected together need to be consistent.

Take a simple example: two Siemens 200PLC, originally through 485 wired code teasing blind communication, baud rate is 9600, now due to the inconvenience of wiring, want to replace it with wireless, then use two F8914-E Zigbee terminal pointing equipment, through the point-to-point Zigbee wireless network for communication. One is set as a coordinator, and the other is set as a router or terminal, which is connected to the 485 serial port with the two PLCs respectively, so in general, the serial port parameters at both ends are the same (the baud rate is 9600).

If the baud rate of one of the PLCs is changed to 115200, then as long as the F8914-E wave delay rate connected to it is also changed to 115200, the two PLC master and slave stations can still communicate normally.

Obviously needed. Otherwise, how to communicate.