História stránky

...

Protocol PCMBA/IEC870-FT1.2 implements communication with RTU devices on the gas control stations.
Protocol PCMBA/IEC870-FT1.2 Scan supports monitoring of the communication between RTU devices on the gas control stations and SPP control center. The protocol can be used for monitoring the parameters of the natural gas take-off of wholesale customers (who have the own control stations). It monitors the parameters such as the quantity of take-off, instantaneous/hourly/daily gas flow, temperature, input and regulated pressure of the gas, etc. A technical device for monitoring the communication between RTU and radio modem (a galvanic read-only separator of communication) is delivered from SPP on demand of a wholesale customer.

...

Kotva
komunikacna_stanica komunikacna_stanica

Communication station configuration

...

• Communication protocol: PCMBA/IEC870-FT1.2 or PCMBA/IEC870-FT1.2 Scan.
• The supplier should provide you the station address when receiving the device. A group number is other another important address parameter. It is set configured as a station protocol parameter (see below in the document).
• You must always configure only one station on one communication line.

...

Communication station - configuration dialog box - tab "Protocol parameters".
They influence some of the optional protocol parameters. You can set the following parameters of protocol:

Table 1

String A string containing the protocol parameters is being defined as follows:

Key_word=value;Key_word=value; ...

Example:

WT=100;MWR=20;

If there is used a keyword with an invalid value is used in the initialization string, there will be used the corresponding default value according the to table 1 will be used.

Note: As protocol PCMBA/IEC870-FT1.2 Scan is passive (it monitors the communication), the start of data and checking their values can take longer. A complete Complete recovery of all values should be done at the latest within 24 hours. To speed up this process, you can ask the SPP control center for priority data reading from the control station. If any no data do not come for a period more than WT * MWR, all values become invalid and the station switches to HARDERR state.

Kotva
merany_bod merany_bod

I/O tag configuration

...

I/O tag values: Ai, Di, Ao, Dout (PCMBA/IEC870-FT1.2) resp. Ai, Di (PCMBA/IEC870-FT1.2 Scan).

The supplier should provides provide you with the addresses for the measurement. The addresses for analog or integer values are the numbers in the range 0 up to 255. The binary values are set in the form "Address.Offset", e.g. "10.1". The Address is the number in the range 0 up to 255 and offset from 0 up to 15.

...

The error messages, mentioned below, may occur during the start or communication. It is recommended to activate the monitoring of communication in the configuration of the line for easier identification of the problem. You can choose it from these levels:

...

When you set "Monitor & Disk" or "Disk", the file "line_name.LOG" occurs in the subdirectory "\TRACE" in application directory on the computer with the running communication process. This file contains all the debug and error messages.

Kotva
literatura literatura

Literature

...