Telegram Structure - Siemens SINAMICS G120 Operating Instructions Manual

Additional settings
Parameter
P0015 = 21
p2020
p2022
p2023
p2040
8.4.2.2

Telegram structure

Overview
A USS telegram comprises a sequence of elements, which are sent in a defined sequence.
Each element contains 11 bits.
Figure 8-8
SINAMICS G120C frequency converter
Operating Instructions, 03/2012, FW V4.5, A5E02999804B AB
Description
Macro drive device
Select the I/O configuration
Setting the baud rate
Value Baud rate
4 2400
5 4800
6 9600
7 19200
8 38400
Fieldbus interface USS PZD number
Sets the number of 16-bit words in the PZD part of the USS telegram
Setting range: 0... 8 (0 ... 8 words)
Fieldbus interface USS PIV number
Sets the number of 16-bit words in the PIV part of the USS telegram
Setting range:
0, 3, 4: 0, 3 or 4 words

127: variable length

Fieldbus interface monitoring time [ms]
Sets the monitoring time to monitor the process data received via the fieldbus. If no
process data are received within this time, an appropriate message is output
Header information
STX LGE
Structure of a USS telegram
n net data
ADR 1. 2.
Configuring the fieldbus
8.4 Communication via RS485
Value Baud rate
9 57600
10 76800
11 93750
12 115200
13 187500
Final
information
: : : n BCC
111