Communication Via Uss; Basic Settings For Communication - Siemens SINAMICS G110M Function Manual

5.3

Communication via USS

The USS protocol is a serial data link between a master and up to a maximum of 31 slaves.
A master is, for example:
● A programmable logic controller (e.g. SIMATIC S7-200)
● A PC
The inverter is always a slave.
The maximum cable length is:
● 1200 m for a baud rate up to 38400 bit/s and maximum of 32 nodes
● 1000 m for a baud rate of 187500 bit/s and a maximum of 30 nodes
Additional information on how to connect the inverter to a USS fieldbus:
inverters into a bus system via the RS485 interface (Page 110).
5.3.1

Basic settings for communication

Overview
Depending on the inverter, you have the following options for setting communication via the
USS:
● For all inverters with an RS485 interface:
● For inverters with a CU230P-2 HVAC / CU230P-2 BT
108 "BT Mac 8: USS fieldbus"
For additional information, please refer to the operating instructions of your inverter.
Procedure with default setting 21 "USS Fieldbus"
Proceed as follows to set communication via USS:
1. Activate communication via the RS485 interface using one of the following options:
– With Startdrive during commissioning in step "Default setting of setpoint/command
– With the BOP-2 during basic commissioning under step "MAc PAr P15":
– Via the parameter number:
2. Set the bus protocol via p2030:
p2030 = 1
3. Set the inverter address.
Fieldbuses
Function Manual, 04/2018, FW V4.7 SP10, A5E34229197B AE
21 "USS Fieldbus"
Overview of the manuals (Page 232).
sources":
21: USS fieldbus
FB USS
p0015 = 21
Communication via RS485
5.3 Communication via USS
Integrating
111