Planning/Configuring; Fixed Register Bits Default Definitions Table - Siemens SINAMICS PERFECT HARMONY GH180 Function Manual

Modbus Communication

4.4 Planning/Configuring

4.4 Planning/Configuring
This section describes the setup methods available for communication.
The following topics are explained:
• Fast setup procedures
• Network setup procedure
• Network status detection
• Setup procedure example
Note
Fast setup procedures allow setup of a Network 1 interface with a minimum of detail.
Fast Setup: Control the drive using the default configuration
To control the drive using the default configuration, you must send commands to the drive's
'fixed reg bits' location. This location is register 'Data to Drive 01' as provided in Table
Correspondence between Drive Parameter ID and Communication Protocol Address located in
the section Parameter Assignment / Addressing.
Setup Procedure:
To control the drive from a PLC using the default configuration, complete the following steps in
the order described
1. Set parameter 'Network 1 Type' (9901) to "Modbus".
2. Set parameter 'Modbus Baud Rate' (9060); this must match the baud rate of the PLC
controller.
3. Set parameter 'Modbus Parity' (9047) to match the parity of the PLC controller.
4. Set parameter 'Modbus Address' (9070) to the desired network address for the drive.
5. Set parameter 'Net Control Type' (9944) to "Fixed". This sets the bits at register 'Data to Drive
01' where the fixed register bits are located. The fixed register bits are interpreted as shown
in the following table.
6. Add the following line to the SOP:
Network1RunEnable_O = TRUE;
Table 4-22

Fixed Register Bits Default Definitions Table

Bit
Network1FixedRegBit0_I
Network1FixedRegBit1_I
Network1FixedRegBit2_I
Network1FixedRegBit3_I
Network1FixedRegBit4_I
Network1FixedRegBit5_I
Network1FixedRegBit6_I
Network1FixedRegBit7_I
44
Default Definition
Run forward
Run reverse
Fault reset
Stop
1
Reserved
Start stop control from network
Speed commanded from network
Reserved for future assignment
NXGPro+ Communication Manual
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