I am communicating data between PLCs using python snap7. the data in the PLC is byte.bit addressable. I am trying to read a boolean with an address of M110.7. M meaning internal memory byte=110 bit=7. I am using the mb_read function to get the byte array of internal memory. So, I am passing start = 110, and size = S7WLBit (0x01). Which indicates the data type (boolean). This returns a byte array = b'\x00'. After this, I use the get_bool function to retrieve the value. Where I am passing the byte array I achieved. The byte index (110) and the bit index (7). I am expecting the value to be read but receive this error message.
byte_value = bytearray_[byte_index]
IndexError: bytearray index out of range
To clarify, I recognized when start = 0, I do not receive the out-of-range error. How can I achieve this but for values other than 0?
