Siemens SIPROTEC 6MD665, Manual, Page: 94 / 222

2 Functions
80
6MD665 Manual
C53000-G1876-C103-3
Setting a slot
Note
A modification to the slot setting, in comparison to the delivery setting, should only be
made if there is just cause and only with the required system knowledge!
The set slot and the actual slot are not automatically checked for consistency. Please
carefully check your settings yourself.
In the Slot drop-down list box select the name of the slot in which the communications
module is installed in the SIPROTEC
®
4 device.
Figure 2-32 Properties - SIPROTEC device dialog box, Inter Relay Communication tab
To apply your settings, click OK. The Properties - SIPROTEC device dialog box is
closed.
The parameter is not activated until the parameter set is updated.
Setting communication parameters for a combination
While the slot to which this communications module is connected is the only setting
which needs to be made in the device-specific communication parameters, several
settings need to be taken into consideration for the combination as a whole. The set-
tings which need to be made are summarised in two groups:
• Interface settings
These serial interface settings must be identical for all the SIPROTEC
®
4 devices
in the IRC combination. Otherwise the devices are not able to communicate with
one another. They are therefore defined centrally for the combination.
• Bus parameters
Settings relating to the bus arbitration only affect the parameter set of the SIPRO-
TEC
®
4 device which serves as the master in the IRC combination. However, as