Supported device types and versions
Communication line configuration
Station configuration
I/O tag configuration
Changes and modifications
Document revisions

Supported device types and versions

The protocol implements ANSI X3.28 communication. The communication was verified against the SPIO 500M communication unit of ABB's SPACOM protection and control system.
The D2000 KOM process periodically reads all configured I/O tags (see the Read Data Timeout parameter). The communication unit spontaneously sends events (Events) that can also cause the I/O tag of DI type to be set to 0 or 1 (see the I/O tag configuration).

Communication line configuration

Station configuration

  • Communication protocol: ABB SRIO X3.28.
  • Station address: a number in the range of 0 - 255. It can be specified as a decimal number or as a hexadecimal number with a hash at the beginning (e.g. #0A).

Station parameters

Dialóg Communication station - Protocol parameters tab.
The parameters influence some optional protocol parameters. The following protocol line parameters can be used:

Table 1

ParameterDescriptionUnitDefault value
Host Station Address
The address of the master station (D2000 KOM process) is a number in the range 0 to 255.-0
Retry Count
The number of request retries in case of a communication failure.-3
Wait First Timeout
First waiting for a response after sending the request.ms100 ms.
Wait Timeout
The delay between individual readings of the response until its completing.ms100 ms.
Max Wait Retry
Retry count of response reading until its completing.-50
Scan-only Mode
Activation of a permanent passive mode (Scan only) without sending requests and only processing received messages.YES/NONO
Full Debug
Full communication monitoring. It activates logging of the I/O tag values and other debug information.YES/NONO
DI Data Address
The start address of the block of DI data (digital inputs). Blok's length is 500 words, data are 16-bit binary numbers.
The parameter is used only for communication logs and analysis.		-0
DO Data Address
The start address of the block of DO data (digital outputs). Blok's length is 250 words, data are 16-bit binary numbers.
The parameter is used only for communication logs and analysis.		-500
EV Data Address
The start address of the block of EV data. Blok's length is 250 words, data are 16-bit binary numbers with timestamps.
The parameter is used only for communication logs and analysis.		-750
AI Data Address
The start address of the block of AI data (analog inputs). Blok's length is 500 words, data are 32-bit binary numbers.
The parameter is used only for communication logs and analysis.		-1000
AO Data Address
The start address of the block of AO data (analog outputs). Blok's length is 500 words, data are 32-bit binary numbers.
The parameter is used only for communication logs and analysis.		-1500
Time Address
The start address of Time Write data where time is written during time synchronization. Data's length is 9 words, data is BCD encoded.-2300
Event Data Address
The start address of Event data. The data is 4 words in length, the data are 32-bit binary numbers (containing 10-bit SPACOM Unit Number, 7-bit Channel Number, and 5-bit Event Number which can be specified in the I/O tag configuration) with a time stamp.-2400
Request Data Length
The size of the block of data specified in the BLOCK_READ data request sent by the KOM process (2-244 bytes).bytes100
Read Data Period
A period (10-1440 minutes) in which the D2000 KOM process performs readout of all data (integrity readout).min15
Diagnostic Request Timeout
A period (10-60 seconds) in which the D2000 KOM process sends a diagnostic request (DIAG_LOOP) to verify line functionality.s5

A string containing the protocol parameters is defined as follows:

Keyword=value;Keyword=value; ...

Example :

WT=100;MWR=20;

If a keyword with a valid value is not found in the initialization string, a default value will be used (see the table above).

I/O tag configuration

Possible value type: Ai, Di.

I/O tag address items:

  • Word Address: 16-bit data address in device memory (0-65535) used during readout of all data (see Read Data Timeout).
  • SPACOM Unit (Di tags only): optional 10-bit address of SPA Unit (0-1023) within the SPACOM system.
  • Channel (Di tags only): optional 7-bit address of SPA Channel (0-127) within the SPACOM system.
  • EventNr 0->1 (Di tags only): optional 6-bit number of Event (0-63), which will cause a transition to True value.
  • EventNr 1->0 (Di tags only): optional 6-bit number of Event (0-63), which will cause a transition to False value.

Note: Optional address items SPACOM Unit, Channel, EventNr 0->1, EventNr 1->0 are used when the Di I/O tag's value is to be set after the arrival of Event Data.

Changes and modifications

-

Document revisions

Ver. 1.0 - June 29th, 2017 - Document creation.


Related pages:

Communication protocols

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