Either voltage related (so 0's are seen as 1's and 1's as 0's),or datarate speed mismatch.
After several test and trials and some discussion with the hardware supplier I could not make it work yet.In the last email from the supplier he asked me the following:Please let me know if your Arduino accepts only RS232 TTL level data or not? If that's the case, then we have to provide you the pinout/p assignment of the CD-620-R to you because our CD-620-R provides signal data as RS232 level, that may cause misread of code.I am insecure to answer this.Anyone knows this, please?
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