Rockwell Automation FlexPak/WebPak 3000 DC Drive AutoMax Network Communication Board - Manual (Page 27)

Programming 4-5
Note that this method assumes that all requirements have been met for the drive to
obtain its inputs from the network (see figure 4.1).
4.6 Monitoring Unacceptable Parameter Values
The parameter processing error status flag (FlexPak drives: Drop_1, register 0, bit 12;
WebPak drives: Drop_1, register 0, bit 13) allows the network master to monitor
parameter values that are unacceptable to the drive.
When this flag is set to 1, one or more parameters sent to the drive were rejected.
When this flag is set to 0, all parameters sent to the drive were accepted.
Note that the Tune/Config Inputs Enable bit (Drop_1, register 32, bit 14) must be set
to 1 before the drive will read or process any tune/config parameters. The parameter
processing error flag is updated approximately every 600 msec.
More information on parameter processing errors is available when using the
FlexPak 3000 alternate register map (see section 6.2) or the WebPak 3000 register
map (see section 7.1).
4.7 Timing Requirements
The amount of time required by the network master to transmit data to the drive
depends on the number of active drops on the network. This time is referred to as the
“data update time.” Refer to I/M J2-3001 for details on calculating this time.
Tunable and configurable drive input register values must be maintained by the
network master’s application program for the data update time plus at least 600 msec
to assure that they are read by the drive.
Most of the control/reference data types do not have this 600 msec requirement
because they are read by the drive every 5 or 10 msec.
To start the drive, the Run and Jog inputs must be set to 0 for at least 20 msec, then
set to 1 for at least 20 msec (a 0-to-1 transition). The drive might delay the start for up
to 100 msec after receiving the 0-to-1 transition because of variable processing
delays.
For the following actions, the inputs must be set to 0 for at least 600 msec, then set to
1 for at least 600 msec (a 0-to-1 transition):
• Fault log clear
• Alarm log clear
• Alarm reset
• Memory save
To reset faults, the inputs must be set to 0 for at least 10 msec, then set to 1 for at
least 10 msec (a 0-to-1 transition).