Version List
Version List
Version List
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Transceiver module TRX433-10C2 / TRX868-10C2 (Vers. 1.0E) 40<br />
Function group WRITE<br />
When the parameter are saved in RAM and in EEPROM then you have to be careful that the limited number<br />
of 100’000 EEPROM write cycles per parameter aren’t exceeded. But when you try to write a value into the<br />
EEPROM which is already there then the write instruction will not be done. Therefore you can write a<br />
configuration that doesn’t change in the EEPROM anytime. The data is thereby just written in the EEPROM<br />
the very first time.<br />
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Functional name WRITE frequency RX+TX Function 08H<br />
Functional call 0B0H, 08H, FREQ<br />
Answer 08H, FREQ<br />
FREQ = channel number according to frequency table<br />
Range 1…139 for 433 MHz band<br />
Range 1…159 for 868 MHz band<br />
Frequency channel for the radio reception and transmitting according to frequency table. Transmititon- and<br />
reception channel are set to the same frequency together.<br />
The channel spacing is fix 12.5kHz, independent of the adjusted RF data rate.<br />
When Bit7 of Byte2 is high then the parameter is stored in the EEPROM as well and the configuration is<br />
activated immediately after a power up. The answer is always with Bit7 = 0.<br />
The frequency change needs 2ms by 19.2kbit/s RF data rate, 5ms by 2.4kbit/s RF data rate, i.e. after that<br />
time the new frequency is set and can be used.<br />
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Functional name WRITE frequency RX Function 09H<br />
Functional call 0B0H, 09H, FREQ<br />
Answer 09H, FREQ<br />
FREQ = channel number according to frequency table<br />
Range 1…139 for 433 MHz band<br />
Range 1…159 for 868 MHz band<br />
Frequency channel for the radio Transmission and reception channels may differ!<br />
The channel spacing is fix 12.5kHz, independent of the adjusted RF data rate.<br />
When Bit7 of Byte2 is high then the parameter is stored in the EEPROM as well and the configuration is<br />
activated immediately after a power up. The answer is always with Bit7 = 0.<br />
The frequency change needs 2ms by 19.2kbit/s RF data rate, 5ms by 2.4kbit/s RF data rate, i.e. after that<br />
time the new frequency is set and can be used.<br />
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