Using USS Protocol Instructions to Communicate with Drives
11-18
S7-200 Programmable Controller System Manual
A5E00066097-02
11.5 Drive Setup
Before you connect a drive to the PLC, you must ensure that the drive has the
following system parameters. You set the parameters by using the drive keypad.
Follow the steps below to set the parameters on your drive:
1. Reset the drive to factory settings (optional). Press the P key: P000 is
displayed. Press the up or down arrow key until the display shows the P944.
Press P to enter the parameter.
P944=1
2. Enable the read/write access to all parameters. Press the P key. Press the up
or down arrow key until the display shows P009. Press P to enter the
parameter.
P009=3
3. Check motor settings for your drive. The settings will vary according to the
motor(s) being used. Press the P key. Press the up or down arrow key until
the display shows the motor setting for your drive. Press P to enter the
parameter.
P081=Nominal frequency of motor (Hz)
P082=Nominal speed of motor (RPM)
P083=Nominal current of motor (A)
P084=Nominal voltage of motor (V)
P085=Nominal power of motor (kW/HP)
4. Set the Local/Remote control mode. Press the P key. Press the up or down
arrow key until the display shows P910. Press P to enter the parameter.
P910=1 Remote control mode
5. Set the Baud Rate of the RS-485 serial interface. Press the P key. Press the
up or down arrow key until P092 appears. Press P to enter the parameter.
Press the up or down arrow key until the display shows the number that
corresponds to the baud rate of your RS-485 serial interface. Press P to enter.
P092 3 (1200 baud)
4 (2400 baud)
5 (4800 baud)
6 (9600 baud - default)
7 (19200 baud)
6. Enter the Slave address. Each drive (a maximum of 31) can be operated over
the bus). Press the P key. Press the up or down arrow key until P091 appears.
Press P to enter the parameter. Press the up or down arrow key until the
display shows the slave address you want. Press P to enter.
P091=0 through 31.
7. Ramp up time(s) (optional). This is the time in seconds that it takes the motor
to accelerate to maximum frequency. Press the P key. Press the up or down
arrow key until P002 appears. Press P to enter the parameter. Press the up or
down arrow key until the display shows the ramp up time you want. Press P to
enter.
P002=0-650.00
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