Device overview
Module ... Slot ... Type ...
PLC ... 2 CPU 315-2 PN/DP
MPI/DP interface 2 X1 MPI/DP interface
PROFINET inter-
face
2 X2 PROFINET interface
... ... ...
CP 343-1 4 CP 343-1
... ... ...
13.5.6.3 User program
13.5.6.3.1 Program structure
n FB 876 - VMC_ConfigMaster_RTU
Ä
504
– This block is used to parametrize the serial interface of the CPU for Modbus RTU
communication.
– Internally block SFC 216 - SER_CFG is called.
With the exception of blocks DB 99 and FB 877, you must create the blocks listed below
for each connected inverter drive:
n FB 881 - VMC_InitV1000_RTU
Ä
507
– The FB 881 - VMC_InitV1000_RTU initializes the corresponding inverter drive
with the user data.
– Before an inverter drive can be controlled, it must be initialized.
– UDT 881 - VMC_ConfigV1000RTU_REF
Ä
504
– UDT 879 - VMC_AxisRTU_REF
Ä
504
n FB 879 - VMC_ReadParameter_RTU
Ä
506
– With this FB you have read access to the parameters of an inverter drive, which is
connected serially via Modbus RTU.
– The read data are recorded in a data block.
– UDT 879 - VMC_AxisRTU_REF
Ä
504
OB 100
OB 1
VIPA SPEED7
Motion control - Simple Motion Control Library
Usage inverter drive via Modbus RTU > Usage in Siemens TIA Portal
HB00 | OPL_SP7 | Operation list | en | 18-30 495