7.3Changing Baud Rate

Wire connection: Refer to Sec. 2.7

Test program: Refer to “NAP7000S User Manual” for TEST.EXE

The steps to change the baud rate of communication are given as follows.

1.Wire connection, power on and run test.exe

2.Press 2

3.

Press $012[Enter]

Receive=! 01080600

4.

Press 2

 

5.

Press %0101080A00[Enter]

Receive=? 01

6.Connect INIT*_pin (pin 6) to GND_pin (pin_10)

7.Press 2

8.

Press %0101080A00[Enter] Receive=! 01

NOTE:

9.

Press 2

 

 

(1) To change the baud rate, the

10.

Press $012[Enter]

Receive=! 01080A00

INIT*-pin must be connected to

11.

Power off, disconnect INIT*_pin and

 

GND_pin, power on and run test.exe

GND-pin

12.

Press 0

 

(2) The baud rate will be saved into

13.

Press 1[Enter](1/2/3/4 for COM 1/2/3/4)

EEPROM immediately.

14.

Press 115200[Enter]

 

 

(3)The module will change its baud

15.

Press 0[Enter]

 

 

rate only during the first power-

16.

Press 2

 

17.

Press $012[Enter]

Receive=! 01080A00

on time.

Step 3: read the module status, baud rate=9600

Step 5: change baud rate with the INIT*_pin floating and the function will fail failure. If the user want to change the baud rate of the 7000 module, the INIT*_pin must be connected to the GND_Pin. If the INIT*_pin is left floating (unconnected), the 7000 module will echo ?AA to the user.

Step 8: change baud rate to 115200 with the INIT*_pin connected to the GND_Pin. After this command, the baud rate will remain at 9600. The baud rate of the 7000 series will be changed only during the power-on interval.

Step 10: read the module status, baud rate= 115200(this value, is stored in the EEPROM only). The baud rate is changed in step 8 but the baud rate of this module is still at 9600 BPS. When the module has powered-off-and- powered-on, the baud rate will be changed to 115200.

Step 11: power off, then power on. The module will change its baud rate based on the EEPROM value only when the module has first powered-on

Step 13-16: change TEST.EXE to baud rate 115200

Step 17: use baud rate 115200 to read back the module status and find that the module is now communicating at baud rate 115200.

7000 Bus Converter User Manual (version 1.2,Feb/2003, 7PH-006-10) ---------------

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ICP DAS USA 7000 user manual Changing Baud Rate Wire connection Refer to Sec