Siemens SINAMICS G150, Operating Instructions Manual

Page: 398 / 680

Operation
6.12 Communication via MODBUS TCP
Converter cabinet units
398
Operating Instructions, 07/2016, A5E03347396A
Drive object that can be addressed via Modbus
With Modbus TCP, you always address drive object DO1 from the list of drive objects
(p0978[0]). A vector drive object must be in this parameter.
However, Modbus TCP is only activated if, under p0978[0], there is a drive object that is
supported by Modbus TCP. If p0978[0] does not contain a valid drive object, then
establishing communication is acknowledged with Alarm A08555.
Diagnostics LEDs in Modbus TCP
Diagnostics states are shown as follows using LEDs with Modbus TCP:
Color State Significance
Green Continuous
light
Connections and setpoints are OK.
Green Flashing light Connection is OK, but no setpoints (dependent on timeout).
Red Flashing light
2 Hz
No connection or setpoint timeout.
6.12.2 Configuring Modbus TCP via interface X150
Activate Modbus TCP via X150 (CU320-2 PN)
1. For drive object DO1, set p2030 = 13 (Modbus TCP).
2. Using p8921, set the IP address for the onboard PROFINET interface on the Control Unit.
3. Set the standard gateway using p8922.
4. Set the subnet mask using p8923.
5. Set the DHCP mode using p8924.
6. Select the setting "Activate and save configuration" as interface configuration using
p8945 = 2.
7. In the STARTER commissioning tool, check the list of drive object p0978.
When required, change the sequence of the drive objects using the telegram
configuration ("Drive device" > "Communication" > "Telegram configuration").
8. Save the settings in the STARTER commissioning tool and carry out a POWER ON.