Emerson Unidrive M702 - Onboard PLC Parameters; Onboard PLC Trips

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Unidrive M702 User Guide 135
Issue Number: 3
• The variable data types REAL (32 bit floating point), LWORD (64 bit
integer) and WSTRING (Unicode string), and retained variables are
not supported.
10.4 Onboard PLC parameters
The following parameters are associated with the Onboard PLC user
program.
This parameter stops and starts the user program.
0 - Stop the User Program
The onboard user program is stopped. If it is restarted by setting
Onboard User Program: Enable (11.047) to a non-zero value the
background task starts from the beginning.
1 - Run the User Program
The user program will execute.
This parameter is read-only and indicates the status of the user program
in the drive. The user program writes the value to this parameter.
This parameter holds the number of times an Onboard PLC user
program download has taken place and is 0 on dispatch from the factory.
The drive is rated for one hundred ladder program downloads. This
parameter is not altered when defaults are loaded.
This parameter shows the number of times the freewheeling task has
started per second.
This parameter shows the percentage of the available time used by the
user program clock task.
This parameter shows the interval at which the clock task is scheduled to
run at in ms.
10.5 Onboard PLC trips
If the drive detects an error in the user program it will initiate a User
Program trip. The sub-trip number for the User Program trip details the
reason for the error. See Chapter 13 Diagnostics on page 247 for more
information on the User Program trip.
11.047 Onboard User Program: Enable
RW Txt US

Stop (0) or Run (1)

Run (1)
11.048 Onboard User Program: Status
RO Num ND NC PT

-2147483648 to
2147483647

11.049 Onboard User Program: Programming Events
RO Num ND NC PT PS

0 to 65535

11.050
Onboard User Program: Freewheeling Tasks Per
Second
RO Num ND NC PT

0 to 65535

11.051 Onboard User Program: Clock Task Time Used
RO Num ND NC PT

0.0 to 100.0 %

11.055
Onboard User Program: Clock Task Scheduled
Interval
RO Num ND NC PT

0 to 262140 ms
