
2 Functions
70
6MD665 Manual
C53000-G1876-C103-3
Note
Due to the cyclical method of operation of the IRC, only indications whose value
changes are pending longer than 20 ms are transferred.
Electrical RS485
connection
Figure 2-26
Connection of bay controllers to inter relay communication (electrical)
The connection between the devices occurs electrically via an RS485 interface. The
electrical connections are terminated with resistors at the ends (first and last device),
which are set via jumpers in the 6MD665 device. The jumper settings can be found
in Chapter Installation and Commissioning.
One of the following operating modes can be selected in DIGSI
®
using the serial inter-
face settings.
Table 2-14
Operating mode of the IRC interface (electrical)
Transmission mode
Baud rate
HDLC
125 KBaud, 250 KBaud, 1 MBaud, 1.25 MBaud
UART
115 KBaud or 250 KBaud
Summary of Contents for SIPROTEC 6MD665
Page 8: ...Preface vi 6MD665 Manual C53000 G1876 C103 3 ...
Page 14: ...Contents vi 6MD665 Manual C53000 G1876 C103 3 ...
Page 140: ...3 Installation and Commissioning 126 6MD665 Manual C53000 G1876 C103 3 ...
Page 166: ...4 Technical Data 152 6MD665 Manual C53000 G1876 C103 3 ...
Page 210: ...Literature 196 6MD665 Manual C53000 G1876 C103 3 ...
Page 222: ...Index 208 6MD665 Manual C53000 G1876 C103 3 ...