Siemens SIPROTEC 5 Manual page 184

Function-Group Types
6.5 Function-Group Type Analog Units
Adding a USART Module
Add a USART-AB-1EL or a USART-AC-2EL USART module in DIGSI to the device. The USART module must be
inserted at one of the plug-in positions for communication modules in the base module or in the CB202
expansion module (refer to the following figure).
[sc20ser3-220114-01-DE, 1, en_US]
Figure 6-41
Selecting the SUP Protocol
Select the Slave Unit Protocol (SUP). This protocol is responsible for the communication between the SIPROTEC
5 device and the 20-mA unit.
[scauser4-220114-01-DE, 1, en_US]
Figure 6-42
Communication Settings
Make the communications settings for the relevant serial channels. For this, use the default settings specified
by the 20-mA unit. Normally, you must adapt only the parameterization of the SIPROTEC 5 device to the
settings of the 20-mA unit. Make sure that the setting values in both devices are the same. The settings of the
Non-flickering light (on/off): is not relevant for the RS485 interface.
NOTE
i
i
The driver for the USART module for the SUP protocol is not preinstalled as standard for the initial use of
this interface (following the firmware update).
184
Insertion Position for a USART Module
Selecting the SUP Protocol
SIPROTEC 5, Fault Recorder, Manual
C53000-G5040-C018-5, Edition 11.2017