11.5
SVCREQ 3: Change Programmer Communications
Window Mode
Use SVCREQ 3 to change the programmer communications window mode (Limited or
Run-to-Completion). The change occurs during the next CPU sweep after the function is
called. The time of the window cannot be changed; it is always 6ms.
SVCREQ 3 passes power flow to the right unless a mode other than 0 (Limited) or 2
(Run-to-Completion) is selected.
The parameter block has a length of one word.
11.5.1
Changing the Programmer Communications
Window Mode
To change the programmer window, enter SVCREQ 3 with this parameter block:
11.5.1.1
Example of SVCREQ 3
In the following example, when enabling input %I006 goes ON, the programmer
communications window is enabled and assigned a value of 6ms. The parameter block is
in reference memory location %R0051.
%R0051
CONST
00003
SVC
_
REQ
FNC
PARM
%R0051
CONST
0006
MOVE
WORD
IN
Q
%I0006
The Service Request Function
GFK-1503E User Manual 201
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Summary of Contents for VersaMax PLC
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