x/mcRead component: v0.37.0+ Reads Q/L/R/iQ-R/iQ-F series PLC devices via the Mitsubishi MC protocol (3E frame/binary, SLMP). Results are written to msg.Data as a unified iot_points.Data list.

Requires: rulego-components-iot (opens new window)

Configuration

Field	Type	Description	Default
server	string	PLC address host:port, MC default port 6000	127.0.0.1:6000
timeout	int	Request timeout (seconds)	5
points	array	Default point table. Points in msg.Data take precedence	-

Network/PC number parameters are fixed by the underlying library (Ethernet direct-connect scenario).

Point Table Fields

Field	Description
name	Point name
addr	Device address (see below)
type	Data type
scale / offset	Engineering conversion
endian	Multi-register byte order: ABCD/CDAB/BADC/DCBA

Engineering formula: eng = raw * scale + offset. For offset-only conversion, set scale=1 explicitly; when scale=0, the result becomes offset.

All fields support ${msg.xx} / ${metadata.xx} templates.

Address Format (Devices)

Device	Word	Bit	Description
D	D100	-	Data register
W	W200	-	Link register
R	R200	-	File register
ZR	ZR300	-	File register (extended)
M	-	M10	Internal relay
SM	-	SM400	Special relay
X	-	X1A0	Input (hex)
Y	-	Y30	Output (hex)
B	-	B4	Link relay
C	C10	C10	Counter
L	-	L10	Latched relay

Data Types

BOOL, INT16, UINT16, INT32, UINT32, FLOAT32, FLOAT64 (per-point Endian: ABCD/CDAB/BADC/DCBA)

Input/Output

• Input: use configured points, or override them by passing a point list in msg.Data
• Output: [{"name","value","timestamp","error"}]

Example

{
  "id": "mc_read",
  "type": "x/mcRead",
  "configuration": {
    "server": "192.168.1.30:6000",
    "points": [
      {"name": "speed", "addr": "D100", "type": "UINT16"},
      {"name": "temperature", "addr": "D102", "type": "FLOAT32"}
    ]
  }
}

Related

• Overview: x/mc
• Write: x/mcWrite
• Universal acquisition entry: x/iotRead (driver=mc)
• To time-series storage: x/tsdbWrite (measurement configured)