Siemens SINAMICS V20 Series User Manual

Communicating with the PLC
6.1 USS communication
SINAMICS V20 Inverter
108 Operating Instructions, 07/2012, A5E03728167
No. Description
106 Request is not included / task is not supported
109 PKW request access timeout / number of retries is exceeded / wait for response from CPU side
110 Parameter value cannot be changed (parameter is locked)
200 / 201 Changed lower / upper limits exceeded
202 / 203 No display on the BOP
204 The available access authorization does not cover parameter changes
300 Array elements differ
Basic inverter settings
Parameter Function Setting
P0010 Commissioning parameter = 30: restores to factory settings
P0970 Factory reset Possible settings:
= 1: resets all parameters (not user defaults) to their default
values
= 21: resets all parameters and all user defaults to factory
reset state
Note: Parameters P2010, P2011, P2023 retain their values
after a factory reset.
P0003 User access level = 3
P0700 Selection of command source = 5: USS / MODBUS on RS485
Factory default: 1 (operator panel)
P1000 Selection of frequency setpoint = 5: USS on RS485
Factory default: 1 (MOP setpoint)
P2023 RS485 protocol selection = 1: USS (factory default)
Note: After changing P2023, powercycle the inverter.
During the powercycle, wait until LED has gone off or the
display has gone blank (may take a few seconds) before
re-applying power. If P2023 has been changed via a PLC,
make sure the change has been saved to EEPROM via
P0971.
P2010[0] USS / MODBUS baudrate Possible settings:
= 6: 9600 bps
= 7: 19200 bps
= 8: 38400 bps (factory default)
...
= 12: 115200 bps
P2011[0] USS address Sets the unique address for the inverter.
Range: 0 ... 31 (factory default: 0)
P2012[0] USS PZD (process data) length Defines the number of 16-bit words in PZD part of USS
telegram.
Range: 0 ... 8 (factory default: 2)
P2013[0] USS PKW (parameter ID value) length Defines the number of 16-bit words in PKW part of USS
telegram.
Possible settings:
= 0, 3, 4: 0, 3 or 4 words
= 127: variable length (factory default)
P2014[0] USS / MODBUS telegram off time [ms] By default (time set to 0), no fault is generated (i.e.
watchdog disabled).

Siemens SINAMICS V20 Series Specifications

General

Brand	Siemens
Model	SINAMICS V20 Series
Category	DC Drives
Language	English