Rockwell Automation 2707-NP2 MICROVIEW SOFTWARE PROGRAMMING MANUAL - Manual (Page 93)

Publication 2707-PM002B-EN-P
MicroView Function Key Builder 13-3
Bit Write Mode The function keys of the MicroView can also set or clear bits in the
logic controller. The bit write mode may be enabled with or without
screen links being assigned to the same function keys (if bit write is
enabled, both function keys will write to the corresponding registers).
The function keys are assigned to 2 contiguous 16 bit addresses such
as N7:20 and N7:21.
Depending upon how a bit write is configured (clear or set), a
function key will either:
•
send the corresponding value (F1 = 1, F2 = 2)
•
clear the register
The following chart shows the set and clear values for each function
key. The register location for F1 is specified on the Function Key
Builder screen. The remaining function key is automatically assigned
to the next consecutive register.
If a function key is used for bit write mode as well as screen
navigation, the bit pattern will not be written if the MicroView cannot
go to the mapped screen.
MicroView
Function Key
Set Value Clear Value
Register
Location
F1 00000000 00000001 00000000 00000000 1
F2 00000000 00000010 00000000 00000000 2
TIP
The entire word register (16 bits) is written when a
bit write is initiated. Bit write does not change
individual bits.