Siemens SIMATIC S7-200 System Manual page 358

S7-200 Programmable Controller System Manual
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
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 (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
8. Ramp down time (optional). This is the time in seconds that it takes the motor to decelerate
to a complete stop. Press the P key. Press the up or down arrow key until P003 appears.
Press P to enter the parameter. Press the up or down arrow key until the display shows the
ramp down time you want. Press P to enter.
P003=0--650.00
9. Serial Link Time-out. This is the maximum permissible period between two incoming data
telegrams. This feature is used to turn off the inverter in the event of a communications
failure.
Timing starts after a valid data telegram has been received. If a further data telegram is not
received within the specified time period, the inverter will trip and display fault code F008.
Setting the value to zero switches off the control. Use Table 11-1 to calculate the time
between the status polls to the drive.
Press the P key. Press the up or down arrow key until P093 appears. Press P to enter the
parameter. Press the up or down arrow key until the display shows the serial link time-out
you want. Press P to enter.
P093=0--240 (0 is default; time is in seconds)
10. Serial Link Nominal System Setpoint. This value can vary, but will typically correspond to 50
Hz or 60 Hz, which defines the corresponding 100% value for PVs or SPs. Press the P key.
Press the up or down arrow key until P094 appears. Press P to enter the parameter. Press
the up or down arrow key until the display shows the serial link nominal system setpoint you
want. Press P to enter.
P094=0--400.00
11. USS Compatibility (optional). Press the P key. Press the up or down arrow key until P095
appears. Press P to enter the parameter. Press the up or down arrow key until the display
shows the number that corresponds to the USS compatibility you want. Press P to enter.
P095 = 0
12. EEPROM storage control (optional). Press the P key. Press the up or down arrow key until
P971 appears. Press P to enter the parameter. Press the up or down arrow key until the
display shows the number that corresponds to the EEPROM storage control you want.
Press P to enter.
P971 =
13. Operating display. Press P to exit out of parameter mode.
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3 (1200 baud)
4 (2400 baud)
5 (4800 baud)
6 (9600 baud -- default)
7 (19200 baud)
0.1 Hz resolution (default)
1 0.01 Hz resolution
0 Changes to parameter settings (including P971) are lost when power is
removed.
1 (default) Changes to parameter settings are retained during periods when
power is removed.