Difference between revisions of "Edge Gateway Modbus Adapter"

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(Created page with " Edge Gateway Home > '''Modbus Adapter''' == Modbus Protocol Connection == {| class="wikitable" |protocol |Enum |Connection mode of Modbus device. Al...")
 
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== Modbus Protocol Tag ==
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== Modbus Read Tag ==
 
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| colspan="1" |Number of bytes to be read from the ref_addr or date_addr or time_addr.
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| colspan="1" |Optional, Default 2. Number of bytes to be read from the ref_addr or date_addr or time_addr.
 
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| colspan="1" |endian
 
| colspan="1" |endian
 
| colspan="1" |Boolean
 
| colspan="1" |Boolean
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| colspan="1" |True value denotes big endian byte order which is default in Modbus, False value indicate little endian byte order. Applicable in case of tag_type InputRegister or HoldingRegister.
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| colspan="1" |Optional, Default True. This value denotes big endian byte order which is default in Modbus, False value indicate little endian byte order. Applicable in case of tag_type InputRegister or HoldingRegister.
 
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| colspan="1" |bit_index
 
| colspan="1" |bit_index
 
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| colspan="1" |Number
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| colspan="1" |Bit index used in case of boolean values read from tag_type InputDiscrete or Coil.
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| colspan="1" |Optional, Default 0. Bit index used in case of boolean values read from tag_type InputDiscrete or Coil.
 
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| colspan="1" |date_addr
 
| colspan="1" |date_addr
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| colspan="1" |Number
 
| colspan="1" |Number
 
| colspan="1" |Offset address of Modbus device id from where time is read. This is applicable for val_type datetime_text, datetime_long. This address stores number of milli seconds offset from date_addr.
 
| colspan="1" |Offset address of Modbus device id from where time is read. This is applicable for val_type datetime_text, datetime_long. This address stores number of milli seconds offset from date_addr.
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== Modbus Write Tag ==
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{| class="wikitable"
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|tag_id
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|String
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|Unique tag id defined in the context of the current thing_config. This is used in Datonis instruction json to address this Modbus tag.
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|-
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| colspan="1" |tag_type
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| colspan="1" |Enum
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| colspan="1" |Allowed values are HoldingRegister and Coil. Type Coil can only hold boolean values.
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| colspan="1" |val_type
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| colspan="1" |Enum
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| colspan="1" |Allowed values are boolean, integer, long, float, double. This indicates the type of tag value to be write to Modbus device address. In case of 
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tag_type Coil only boolean is considered.
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|-
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| colspan="1" |device_id
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| colspan="1" |Number
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| colspan="1" |Modbus device id from where data to be read.
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|-
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| colspan="1" |ref_addr
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| colspan="1" |Number
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| colspan="1" |Offset address of Modbus device id. This is applicable for val_type boolean, integer, long, float, double.
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|-
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| colspan="1" |endian
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| colspan="1" |Boolean
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| colspan="1" |Optional, Default True. This value denotes big endian byte order which is default in Modbus, False value indicate little endian byte order. Applicable in case of tag_type InputRegister or HoldingRegister.
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|-
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| colspan="1" |bit_index
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| colspan="1" |Number
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| colspan="1" |Optional, Default 0. Bit index used in case of boolean values read from tag_type InputDiscrete or Coil.
 
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Revision as of 14:38, 21 July 2017

Edge Gateway Home > Modbus Adapter

Modbus Protocol Connection

protocol Enum Connection mode of Modbus device. Allowed values are TCP and Serial. As of now only TCP is supported.
ip_address String Machine IP address of the Modbus connection.
port Number Port number of Modbus connection.
datetime_config Object Optional. Configuration object to read date time tag values for this connection.
datetime_tag Object Optional. The tag from which thing date time needs to read.

datetime_config object

text_format String The format in which date time values needs to be converted to string e.g. EEE, dd MMM yyyy HH mm ss.SSS z. 

Refer to https://docs.oracle.com/javase/8/docs/api/java/time/format/DateTimeFormatter.html to get an idea of formatting values.

time_zone String The time zone in which date time values are stored
offset_ms Number The offset in milliseconds from which date time values should be considered. A 0 offset indicates 01 Jan 1970 00:00:00 GMT/UTC.

datetime_tag object

tag_type Enum Allowed values are InputRegister and HoldingRegister.
device_id Number Modbus device id from where data to be read.
read_count Number Number of bytes to be read from the date_addr or time_addr.
endian Boolean True value denotes big endian byte order which is default in Modbus, False value indicate little endian byte order.
date_addr Number Offset address of Modbus device id. This address stores number of days from offset_ms specified in datetime_config.
time_addr Number Offset address of Modbus device id. This address stores number of milli seconds offset from date_addr.

Modbus Read Tag

tag_id String Unique tag id defined in the context of the current thing_config. This is used further in metric_mappings or derived_tags or monitor_tag_ids to refer to this tag value.
tag_type Enum Allowed values are InputRegister, InputDiscrete, HoldingRegister and Coil. Types InputDiscrete and Coil can only hold boolean values.
val_type Enum Allowed values are boolean, integer, long, float, double, datetime_text and datetime_long. This indicates the type of tag value to be read from Modbus device address. In case of 

tag_type InputDiscrete or Coil only boolean is considered.

device_id Number Modbus device id from where data to be read.
ref_addr Number Offset address of Modbus device id. This is applicable for val_type boolean, integer, long, float, double.
read_count Number Optional, Default 2. Number of bytes to be read from the ref_addr or date_addr or time_addr.
endian Boolean Optional, Default True. This value denotes big endian byte order which is default in Modbus, False value indicate little endian byte order. Applicable in case of tag_type InputRegister or HoldingRegister.
bit_index Number Optional, Default 0. Bit index used in case of boolean values read from tag_type InputDiscrete or Coil.
date_addr Number Offset address of Modbus device id from where date is read. This is applicable for val_type datetime_text, datetime_long. This address stores number of days from offset_ms of datetime_config value.
time_addr Number Offset address of Modbus device id from where time is read. This is applicable for val_type datetime_text, datetime_long. This address stores number of milli seconds offset from date_addr.

Modbus Write Tag

tag_id String Unique tag id defined in the context of the current thing_config. This is used in Datonis instruction json to address this Modbus tag.
tag_type Enum Allowed values are HoldingRegister and Coil. Type Coil can only hold boolean values.
val_type Enum Allowed values are boolean, integer, long, float, double. This indicates the type of tag value to be write to Modbus device address. In case of 

tag_type Coil only boolean is considered.

device_id Number Modbus device id from where data to be read.
ref_addr Number Offset address of Modbus device id. This is applicable for val_type boolean, integer, long, float, double.
endian Boolean Optional, Default True. This value denotes big endian byte order which is default in Modbus, False value indicate little endian byte order. Applicable in case of tag_type InputRegister or HoldingRegister.
bit_index Number Optional, Default 0. Bit index used in case of boolean values read from tag_type InputDiscrete or Coil.
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