NORD USS and Modbus RTU Manual
46 Subject to technical amendments BU 0050 GB-3111
1.6.3 Enable with 50% setpoint
A frequency inverter with the USS address 10, which is in "Standby" status (Section 1.6.2) is to be enabled for
clockwise rotation with 50% setpoint. The last response telegram was received as follows in the controller.
Procedure:
Check last status word (ZSW 0A 31)
Set address (Address 0A)
Generate control word (STW 04 7F)
Generate setpoint (2000 hex)
Send telegram
Check response telegram (ZSW 0F 37)
Details:
Starting requirement (status word of frequency inverter)
The following telegram must be sent to the inverter
The frequency inverter accelerates the motor in the ramp. When the inverter has reached the 50% setpoint, it
responds with the following telegram.
Note: The status of MFR 1 is indicated in Bit 10 of the response telegram. Depending on the
programmed function and status, the status word may differ.
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