2. Enter OB 100 and confirm with [OK].
ð
OB 100 is created and opened.
3. Add a Call FB876, DB876 to the OB 100.
ð
The block call is created and a dialog opens to specify the instance data block
‘VMC_ConfigMaster_RTU_876’ .
4. Confirm the query of the instance data block with [OK].
5. Specify the following parameters:
Call FB876, DB876
Ä
Chap. 13.5.7.5 ‘FB 876 - VMC_ConfigMaster_RTU - Modbus RTU CPU interface’ page 504
Baudrate := B#16#09 // Baud rate: 09h (9600bit/s) IN: BYTE
CharLen := B#16#03 // Number data bits: 03h (8bit) IN: BYTE
Parity := B#16#00 // Parity: 0 (none) IN: BYTE
StopBits := B#16#01 // Stop bits: 1 (1bit) IN: BYTE
TimeOut := W#16#1FFF // Error wait time: 1FFFh (high selected) IN: WORD
Valid := "ModbusConfigValid" // Configuration OUT BOOL
Error := "ModbusConfigError" // Error feedback OUT BOOL
ErrorID := "ModbusConfigErrorID" // Additional error information OUT: WORD
You create the symbolic variables via ‘Context menu è Create / edit symbol’. Here you
can assign the corresponding operands via a dialog.
13.5.4.2.4 Create data block for Modbus slave
For each inverter drive, which is serially connected via Modbus RTU, a data block must
be created.
1.
For this click at ‘Project tree è ...CPU... è PLC program è Program blocks
è Add new block’.
ð
The dialog ‘Add block’ is opened.
2. Select the block type ‘DB block’ and assign it the name "A1_V1000". The DB
number can freely be selected such as DB 100. Specify DB 100 and create this as
a global DB with [OK].
ð
The block is created and opened.
3. In "A1_V1000" create the following variables:
n ‘AxisData’ from Type UDT 879 - VMC_AxisRTU_REF
n ‘V1000Data’ from Type UDT 881 - VMC_ConfigV1000RTU_REF
Symbolic variable
VIPA SPEED7
Motion control - Simple Motion Control Library
Usage inverter drive via Modbus RTU > Usage in VIPA SPEED7 Studio
HB00 | OPL_SP7 | Operation list | en | 18-30 465
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