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Operation
6.12 Communication via MODBUS TCP
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(2).
Diagnostics LEDs in Modbus TCP
Diagnostics states are shown as follows using LEDs with Modbus TCP:
● X150: "PN" LED
● X1400 (CBE20): "OPT" LED
The following states can be displayed using these LEDs:
Color
Green
Green
Red
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 "Activate and save configuration" as interface configuration using p8925 = 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.
418
State
Significance
Continuous light
Connections and setpoints are OK.
Flashing light
Connection is OK, but no setpoints (dependent on timeout).
Flashing light 2 Hz
No connection or setpoint timeout.
Operating Instructions, 12/2018, A5E36652151A
Enclosed Drives
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