Software Interface
2-9
2.4 PLC Output Words: PLC Data → Module
2.4.1
WY5
contains the V
-memory start location for the profile download of the
data table to the module. For example, WY5 = 101 means download table
begins at V
-101.
•
Zero is not a valid value.
•
Max value = PC V
-memory max—300 or 65315 max.
2.4.2
WY6 contains the V
-memory start location for the upload of the process
variable data table to the PLC. For example, WY6 = 400 means the upload
table begins at V
-400.
•
Zero is not a valid value.
•
Max value = PC V
-memory max—100 or 65440 max.
2.4.3
WY7 contains the module mode control value as follows:
•
An integer value of 1
121 in WY7 = run and enable special function (SF)
transfers. All other values = disable run mode and lock out SF transfers.
•
An integer value of 5000 in WY7 = the software revision display
command that forces WX1 to display the current software revision (Rev
.)
number.
2.4.4
A transition from zero to a non-zero value in WY8 is required to execute a
profile. A transition from a non-zero to a zero value is required to reset an
error condition and to set up to start another cycle.
For example, the binary value 1
11
1 1000 0000 0000 in WY8 tells the module
to run a complete cycle with everything in closed loop mode. The module
looks only at the first 5 bits of the WY8 word for the start, stop, and reset
functions. Therefore, only the first 5 bits need to be zero to stop or reset this
cycle.
WY5 = Pointer to
V-memory
WY6 = Pointer to
V-memory
WY7 =
Module
Mode Control
WY8 = Start Cycle
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