Usart-Ab-1El - Siemens SIPROTEC 5 Series Hardware Description

Plug-In Modules
4.2 Communication Modules
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
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
4.2.3.2

USART-AB-1EL

Description
Product code
Figure
Connector type
Baud rate
Protocol
136
Redundant Communication with 2 Masters Using RS485 Bus (for Example, Redundant
IEC 60870-5-103 Protocol)
Serial asynchronous communication module with one electrical inter-
face
P1Zxxxxxxxxxx
2 x RJ45
1.2 kbits/s to 115.2 kbits/s
IEC 60870-5-103
DNP3
SUP serial
SIPROTEC 5, Hardware Description, Manual
C53000-G5040-C002-C, Edition 10.2017