Modbus - Writing with bitmask

[iJAF]

Hi,

I have several bits I have to write in some registers.

The reading is working fine with bitmask, but I don't want to read, just write.

When I write TRUE it always sets to "1" the first bit of the register, not the one selected in the bitmask.

Am I missing something ?


{"name":"Set Heat Mode"            ,"bus_datatype":"1","type":"register","datatype":"int16", "address":1057,    "value_bitmask":0x4,          "read_swap":"n",     "writable":1 },
{"name":"Set Cool Mode"            ,"bus_datatype":"1","type":"register","datatype":"int16", "address":1057,    "value_bitmask":0x8,          "read_swap":"n",     "writable":1 },
{"name":"Set Lock Mode"            ,"bus_datatype":"1","type":"register","datatype":"int16", "address":1057,    "value_bitmask":0x20,         "read_swap":"n",  "writable":1 },
{"name":"Set On Off"                  ,"bus_datatype":"1","type":"register","datatype":"int16", "address":1057,    "value_bitmask":0x80,         "read_swap":"n",  "writable":1 },
{"name":"Set Fan AUTO"             ,"bus_datatype":"1","type":"register","datatype":"int16", "address":1058,    "value_bitmask":0x80,         "read_swap":"n",     "writable":1 },
{"name":"Set Fan LOW"              ,"bus_datatype":"1","type":"register","datatype":"int16", "address":1058,    "value_bitmask":0x4,          "read_swap":"n",     "writable":1 },
{"name":"Set Fan MID"                ,"bus_datatype":"1","type":"register","datatype":"int16", "address":1058,    "value_bitmask":0x2,          "read_swap":"n",     "writable":1 },
{"name":"Set Fan HIGH"              ,"bus_datatype":"1","type":"register","datatype":"int16", "address":1058,    "value_bitmask":0x1,          "read_swap":"n",     "writable":1 },


Thank you