Serial Communication; Modbus Rtu Slave; Function Description; Configuration Via Web Pages - Siemens SICAM 7KG85X Manual

Basic Functions

2.7 Serial Communication

2.7 Serial Communication

Modbus RTU Slave

2.7.1
2.7.1.1

Function Description

The serial communication using Modbus RTU (slave) with the device is executed via the RS485 interface.
2.7.1.2

Configuration via Web Pages

Configuration of the Serial Communication with Modbus RTU (Slave) via RS485 Interface
Precondition: The Modbus RTU protocol must have been activated for the RS485 interface.
To change the Modbus RTU (slave) settings in the Configuration tab, proceed as follows:
•
In the navigation window, click Communication serial and select Modbus RTU as the Bus protocol.
[sc_config_Modbus_RTU, 1, en_US]
Figure 2-35
•
Configure the respective parameters according to the following table.
Table 2-21
Parameter
Bus protocol
Device address
Baud rate
74
Configuration Tab, Modbus RTU (Slave)
Settings for Communication Serial, Modbus RTU (Slave)
Default Setting
Modbus RTU
1
19 200 bit/s
Setting Range
None
Modbus RTU
(slave)
IEC 60870-5-103
1 to 247
1200 bit/s, 2400 bit/s,
4800 bit/s, 9600 bit/s,
19 200 bit/s, 38 400 bit/s,
57 600 bit/s, 115 200 bit/s
SICAM, SICAM P850/P855 7KG85X, Manual
E50417-H1040-C482-A9, Edition 03.2022