The preceding figure shows the cabling using the new RJ45 sockets in a simplified format. The serial RS485
bus can be extended by simply connecting Ethernet patch cables from device to device.
[dwserma2-030211-05.tif, 1, en_US]
Figure 4-6 Redundant Communication with 2 Masters Using RS485 Bus (for Example, Redundant
IEC 60870-5-103 Protocol)
The preceding figure shows the use of both connections on one module for connecting the devices to 2 inde-
pendent masters following the same principle as with a single master.
Reorders
When reordering serial communication modules, specify the product code for the physical version of the
module. The order configurator (IPC configurator) shows you which applications are capable of running on the
module:
•
Serial
•
1-channel or 2-channel
•
Electrical or optical
USART-AB-1EL
Description
Serial asynchronous communication module with one electrical inter-
face
Product code P1Zxxxxxxxxxx
Figure
Connector type 2 x RJ45
Baud rate 1.2 kbits/s to 115.2 kbits/s
Protocol IEC 60870-5-103
DNP3
SUP serial
4.2.3.2
Plug-In Modules
4.2 Communication Modules
136 SIPROTEC 5, Hardware Description, Manual
C53000-G5040-C002-C, Edition 10.2017
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