Command penetration transmission

Parameter	Description	Required
action	sendCmdToDevice	True
pn	Datalogger number	True
devaddr	Address(485 bus)	True
cmd	The instruction to be sent to the address (485 bus) in an uppercase hexadecimal string format, such as "AA BB CC DD EE FF". The system will not distinguish the business attributes of instructions and will directly pass them through	True

response:

Parameter	Description	Required
dat	The response after the instruction is issued, formatted as an uppercase hexadecimal string, such as "AA BB CC DD EE FF". The system will not parse or modify this response, and will directly pass a callback to the user. Additionally, some instructions do not bring a response and return 'null' at this time	True

{
    "err":0,
    "desc":"ERR_NONE",
    "dat":{
        "dat":"AA BB CC DD EE FF"
    }
}

Possible errors:

Response error code	Description	Details
0x0001	ERR_FAIL	Fail
0x0002	ERR_TIMEOUT	Timed out (instruction issued for a long time without response)
0x0006	ERR_FORMAT_ERROR	Parameter error
0x0101	ERR_NOT_FOUND_COLLECTOR	Unable to find Datalogger
0x0106	ERR_DEVICE_OFFLINE	Device is offline

Instruction penetration transmission