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Add possibility to specify measurement per register (#7231)

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Sven Rebhan 2020-03-30 22:30:42 +02:00 committed by GitHub
parent 9a1c26d6cc
commit 3650d74de2
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2 changed files with 48 additions and 30 deletions
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25
plugins/inputs/modbus/README.md
View File

@ -12,17 +12,17 @@ The Modbus plugin collects Discrete Inputs, Coils, Input Registers and Holding R
##
## Device name
name = "Device"
## Slave ID - addresses a MODBUS device on the bus
## Range: 0 - 255 [0 = broadcast; 248 - 255 = reserved]
slave_id = 1
## Timeout for each request
timeout = "1s"
# TCP - connect via Modbus/TCP
controller = "tcp://localhost:502"
# Serial (RS485; RS232)
#controller = "file:///dev/ttyUSB0"
#baud_rate = 9600
@ -30,15 +30,15 @@ The Modbus plugin collects Discrete Inputs, Coils, Input Registers and Holding R
#parity = "N"
#stop_bits = 1
#transmission_mode = "RTU"
## Measurements
##
## Digital Variables, Discrete Inputs and Coils
## name - the variable name
## address - variable address
discrete_inputs = [
{ name = "Start", address = [0]},
{ name = "Stop", address = [1]},
@ -49,11 +49,12 @@ The Modbus plugin collects Discrete Inputs, Coils, Input Registers and Holding R
{ name = "Motor1-Run", address = [0]},
{ name = "Motor1-Jog", address = [1]},
{ name = "Motor1-Stop", address = [2]},
]
]
## Analog Variables, Input Registers and Holding Registers
## measurement - the (optional) measurement name, defaults to "modbus"
## name - the variable name
## byte_order - the ordering of bytes
## byte_order - the ordering of bytes
## |---AB, ABCD - Big Endian
## |---BA, DCBA - Little Endian
## |---BADC - Mid-Big Endian
@ -61,7 +62,7 @@ The Modbus plugin collects Discrete Inputs, Coils, Input Registers and Holding R
## data_type - INT16, UINT16, INT32, UINT32, INT64, UINT64, FLOAT32, FLOAT32-IEEE (the IEEE 754 binary representation)
## scale - the final numeric variable representation
## address - variable address
holding_registers = [
{ name = "PowerFactor", byte_order = "AB", data_type = "FLOAT32", scale=0.01, address = [8]},
{ name = "Voltage", byte_order = "AB", data_type = "FLOAT32", scale=0.1, address = [0]},

53
plugins/inputs/modbus/modbus.go
View File

@ -7,10 +7,12 @@ import (
"net"
"net/url"
"sort"
"time"
mb "github.com/goburrow/modbus"
"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/internal"
"github.com/influxdata/telegraf/metric"
"github.com/influxdata/telegraf/plugins/inputs"
)
@ -44,12 +46,13 @@ type register struct {
}
type fieldContainer struct {
Name string `toml:"name"`
ByteOrder string `toml:"byte_order"`
DataType string `toml:"data_type"`
Scale float64 `toml:"scale"`
Address []uint16 `toml:"address"`
value interface{}
Measurement string `toml:"measurement"`
Name string `toml:"name"`
ByteOrder string `toml:"byte_order"`
DataType string `toml:"data_type"`
Scale float64 `toml:"scale"`
Address []uint16 `toml:"address"`
value interface{}
}
type registerRange struct {
@ -97,14 +100,15 @@ const sampleConfig = `
##
## Digital Variables, Discrete Inputs and Coils
## name - the variable name
## address - variable address
## measurement - the (optional) measurement name, defaults to "modbus"
## name - the variable name
## address - variable address
discrete_inputs = [
{ name = "start", address = [0]},
{ name = "stop", address = [1]},
{ name = "reset", address = [2]},
{ name = "emergency_stop", address = [3]},
{ name = "emergency_stop", address = [3]},
]
coils = [
{ name = "motor1_run", address = [0]},
@ -113,8 +117,9 @@ const sampleConfig = `
]
## Analog Variables, Input Registers and Holding Registers
## name - the variable name
## byte_order - the ordering of bytes
## measurement - the (optional) measurement name, defaults to "modbus"
## name - the variable name
## byte_order - the ordering of bytes
## |---AB, ABCD - Big Endian
## |---BA, DCBA - Little Endian
## |---BADC - Mid-Big Endian
@ -134,7 +139,7 @@ const sampleConfig = `
input_registers = [
{ name = "tank_level", byte_order = "AB", data_type = "INT16", scale=1.0, address = [0]},
{ name = "tank_ph", byte_order = "AB", data_type = "INT16", scale=1.0, address = [1]},
{ name = "pump1_speed", byte_order = "ABCD", data_type = "INT32", scale=1.0, address = [3,4]},
{ name = "pump1_speed", byte_order = "ABCD", data_type = "INT32", scale=1.0, address = [3,4]},
]
`
@ -319,10 +324,11 @@ func validateFieldContainers(t []fieldContainer, n string) error {
}
//search name duplicate
if nameEncountered[item.Name] {
return fmt.Errorf("name '%s' is duplicated in '%s' - '%s'", item.Name, n, item.Name)
canonical_name := item.Measurement + "." + item.Name
if nameEncountered[canonical_name] {
return fmt.Errorf("name '%s' is duplicated in measurement '%s' '%s' - '%s'", item.Name, item.Measurement, n, item.Name)
} else {
nameEncountered[item.Name] = true
nameEncountered[canonical_name] = true
}
if n == cInputRegisters || n == cHoldingRegisters {
@ -635,6 +641,7 @@ func (m *Modbus) Gather(acc telegraf.Accumulator) error {
}
}
timestamp := time.Now()
err := m.getFields()
if err != nil {
disconnect(m)
@ -642,18 +649,28 @@ func (m *Modbus) Gather(acc telegraf.Accumulator) error {
return err
}
grouper := metric.NewSeriesGrouper()
for _, reg := range m.registers {
fields := make(map[string]interface{})
tags := map[string]string{
"name": m.Name,
"type": reg.Type,
}
for _, field := range reg.Fields {
fields[field.Name] = field.value
// In case no measurement was specified we use "modbus" as default
measurement := "modbus"
if field.Measurement != "" {
measurement = field.Measurement
}
// Group the data by series
grouper.Add(measurement, tags, timestamp, field.Name, field.value)
}
acc.AddFields("modbus", fields, tags)
// Add the metrics grouped by series to the accumulator
for _, metric := range grouper.Metrics() {
acc.AddMetric(metric)
}
}
return nil