Heartbeat

For each certain period, Neuron would send a heartbeat to the IIoT platform for aliveness. If IIoT platform can't receive this heartbeat in certain time (e.g. 5 seconds), it may treat the Neuron as dead. In addition, heartbeat message may contain some useful information such as alarm status, running mode, communication status and data usage.

MQTT Topics for Neuron

Publish: Neuron/Heartbeat/%UUID%

MQTT Topics for IIoT platform

Subscribe: Neuron/Heartbeat/%UUID%

Neuron heartbeat syntax

json

{
  "tstp": 1581515618,
  "comm": "UP",
  "mach": "MANU",
  "mode": "ACTIVE",
  "mqcn": "MQCONNECT",
  "dalm": "NON-EXIST",
  "galm": "UNACKNOWLEDGE",
  "ngal": 4,
  "grow": [
    {
      "acat": "alarm",
      "astt": "OFF",
      "amod": "UNACKALARM",
      "atim": 1581513580,
      "alid": 1,
      "comt": "temp1@Temp (812) < low@Temp (800)"
    },
    {
      "acat": "alarm",
      "astt": "ON",
      "amod": "UNACKALARM",
      "atim": 1581515415,
      "alid": 3,
      "comt": "temp2@Temp (791) < low@Temp (800)"
    },
    {
      "acat": "critical",
      "astt": "ON",
      "amod": "UNACKALARM",
      "atim": 1581515415,
      "alid": 4,
      "comt": "temp3@Temp (864) > high@Temp (850)"
    },
    {
      "acat": "alarm",
      "astt": "OFF",
      "amod": "UNACKALARM",
      "atim": 1581513592,
      "alid": 5,
      "comt": "temp3@Temp (864) < low@Temp (800)"
    }
  ]
}

Heartbeat
tstp	TimeStamp
comm	PLC or hardware communication status UP DOWN
mach	Machine Mode AUTO MANU SERV
mode	Please refer to Status Mode section. Inactive Mode Standby Mode Semi-Standby Mode Active Mode Semi-Active Mode
mqcn	MQ broker connection status MQCONNECT MQDISCONNECT
dalm	Device Alarm which specify which device has communication problem.
ndal	Number of device alarms
drow	Device alarm rows
chnl	Channel number of devices
addr	Address of devices
galm	General Alarm which user define their own alarms and triggers
ngal	Number of general alarms
grow	General alarm rows
acat	Alarm Category critical alarm warning event view
astt	Alarm Status ON OFF
amod	Alarm Mode UNACKALARM DISABLE
atim	Alarm TimeStamp
alid	Alarm ID must be copied this ID when user acknowledge function 80
comt	Alarm Comments

Heartbeat ​

Heartbeat