Rockwell Automation FactoryTalk ViewPoint Quick Start Guide User Manual
Page 34

F
ACTORY
T
ALK
V
IEW
P
OINT
Q
UICK
S
TART
30
Set command
writes a value to a tag.
The syntax for the Set command is [&] Set [/V]
[&] forces the command to be evaluated asynchronously, which can dramatically
improve the performance of tag writes.
[/V] performs read-back verify on the write.
[/V] provides an extra level of security by performing a read immediately after
the write to verify that the value was actually altered in the programmable
controller or OPC server.
This option is useful if the communications network is in poor condition, or
susceptible to noise interference.
If the verification fails, the error message is sent to the Factory Diagnostics
system
Toggle command
reads the tag's value and writes back a 0 or 1. If the value is 0,
Toggle changes it to 1; if the value is 1, Toggle changes it to 0.
The syntax for the Toggle command is Toggle [/V]
[/V] performs a read immediately after the write to verify that the value was
altered in the programmable controller or server.
This parameter is useful if the network is in poor condition or susceptible to
noise interference.
If the verification fails, the error message is sent to the Factory Diagnostics
system.
FTViewPointQS.book Page 30 Thursday, July 17, 2014 8:55 AM