Meinberg GPS170PCI Manual de instalación descargar pdf (Pagina 110)

communication route is in good condition. The communication is switched from the

main line to the back-up line and vice versa if the active line is detected to be

broken. The line switch is always initiated by the master.

Redundant

RP570 slave

COM500i

NCC

Fig. 3.8.4.-1 Redundant RP570 slave

System configuration tool supports the configuration of the redundant RP570 slave.

By creating a RP570 slave line and pressing the “Add redundancy” menu item, the

back-up line is created and the same SPI station object can be connected to two

lines.

If the system configuration tool is not used, the following steps should be taken to

configure a redundant RP570 slave line.

1. Define the main line.

2. Define the back-up line.

3. Define the station.

In order to operate as a redundant pair of lines, the main line and the back-up line

must be explicitly configured using the line attributes LI and RU. For more details,

refer to the Chapter Redundant line attributes in the System Objects manual, SPI

station description.

3.8.5. Configuring redundant IEC 60870-5-101 slaves

The IEC 60870-5-101 slave protocol in PC_NET also provides a possibility for

redundancy which follows the corresponding IEC 60870-5-101 standard. In

practice, this means that one IEC slave station object is connected to two IEC

60870-5-101 slave lines controlling two serial ports. One of these is treated as the

main line and the data transfer takes place using this line. The other line is the back-

up line which is activated if the main line fails. If a communication disturbance is

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MicroSCADA Pro

System Configuration

Configuration Manual

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Meinberg GPS170PCI Manual de instalación Pagina 110