x/dlt645Read / x/dlt645Write component: v0.35.0+ DL/T 645-2007 power meter protocol via TCP passthrough for reading and writing meter data items.

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

Page Navigation

• Read: x/dlt645Read
• Write: x/dlt645Write
• Universal acquisition entry: x/iotRead (driver=dlt645)
• Universal write entry: x/iotWrite (driver=dlt645)
• To time-series storage: x/tsdbWrite (measurement configured)

Shared Connection Configuration

Field	Type	Description	Default
server	string	Meter TCP address (serial server passthrough), host:port	127.0.0.1:8899
addr	string	12-digit BCD meter address	000000000001
timeout	int	Request timeout (seconds)	5
points	array	Default point table (addr=DI). Points in msg.Data take precedence	-

Point Table Fields

Field	Description
name	Point name
addr	Data Identifier DI (see below)
type	Data type (default BCD)

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

Address Format (Data Identifier)

Format: XX-XX-XX-XX (4 bytes)

DI	Description
00-01-00-00	Forward active total energy
02-01-01-00	Phase A voltage
02-02-01-00	Phase A current
02-03-00-00	Instantaneous active power
04-00-01-01	Meter number

Data Types

• BCD (default): standard BCD, auto-decimal by DI
• BCD_SIGNED: signed BCD
• INT16/UINT16/INT32/UINT32/INT64/UINT64: binary integers
• BOOL/STRING: special types

Read vs Write

• Read: outputs unified iot_points.Data list to msg.Data; BCD values are auto-scaled by DI metadata
• Write: consumes point list from msg.Data as [{"name","addr","type","value"}]
• Routing: success goes to Success, failure goes to Failure