IEC 60870-5-104

TagSource example

{
  "protocol": "iec104",
  "host": "192.0.2.10",
  "port": 2404,
  "commonAddress": 1,
  "ioa": 100,
  "setpointType": "scaled",
  "tls": false
}

Fields

Field	Note
host, commonAddress, ioa	required
port	default 2404
host2 / redundantHost, port2	failover; if port2 missing, primary port
setpointType	omit/scaled → C_SE_NB_1; float → C_SE_NC_1; bool → C_SC_NA_1
tls, caPem	rustls; CA only with tls

Connection: host, port, commonAddress, tls, caPem.
Point: ioa, setpointType.

Equipment: iec104Binding { connectionId, commonAddress, ioaBase } → ioa = ioaBase + member.

Read: STARTDT + general interrogation. No file transfer. VION_IEC104_CLOCK_SYNC driver env.