16
ENGLISH
Commissioning
8
Typical Network Applications
8.1
Controlling the Drive (e.g. starting the drive)
The following is the sequence of events for starting the drive via the network:
1) Unlock the Drive Control register (#1) by writing a 0 (or the drive password) to
Register #48.
2) Control drive operation with various commands to Register #1 (Start, Stop, Forward,
Reverse, etc.). To start the drive, a value of 0x0008 should be sent to Register #1.
3) If the watchdog timer is enabled, keep it from timing out by assuring that a read
command (to any register) is performed within the time specified by P426.
4) Lock Control when drive operations are complete by writing a 0x0002 (i.e. setting the
Lock Security bit) to Register #1.
Note
If P100 = 3 (NETWORK ONLY) and the drive is still running when the Lock
Security bit is set, it will be brought to a stop by the method specified in Drive
Programming Parameter P111 (STOP).
5) The drive will return to its normal control mode.
8.2
Changing Drive Parameters
The following is the sequence of events for changing drive parameters:
1) Unlock write access to the drive parameters by writing the drive password (P194) to
Register #49. The drive will remain in its normal control mode.
2) Write to all necessary drive configuration or parameters registers.
3) The watchdog timer is not enabled when only the parameters have been unlocked
so there is no need to send repeated read commands to prevent it from timing out.
4) Lock Control when drive operations are complete by writing a 0x0002 (i.e. setting the
Lock Security bit) to Register #1.
8.3
Controlling the Drive Frequency, PID or Torque Setpoint
The following is the sequence of events for changing the drive frequency, PID or torque
setpoint:
1) Configure the setpoint reference for NETWORK.
The network can be set as the frequency, PID or torque setpoint reference in any of
the following ways:
a) Set P101 (Standard Reference Source) to NETWORK (06) and make sure that
no AUTO source has been selected.
b) Set P121…P123 to AUTO: NETWORK (07) and assert the corresponding TB-
13x terminal.
c) Unlock drive controls and write a value of 0xC000 to Register #1 (see Section
9.2.1).
2) Unlock parameters by writing the drive password (P194) to Register #49. The drive
will remain in its normal control mode. The watchdog timer is not enabled when
only parameters have been unlocked so there is no need to send repeated read
commands to prevent it from timing out.
