Publication 1747-UM013B-EN-P - January 2005
4-20
Scanner Configuration and Programming
Setting the bit to 1 will command all outputs off (regardless of the
device’s
Hold Last State
setting).
Only the device’s logical starting address bit matters. Setting other bits
has no effect. Bits 0 to 3 correspond to I/O group locations within
logical racks 0, 1, 2, and 3.
Default:
When the processor enters Run or Test mode, the
scanner sets the starting address bit of each device configured in
the G file to 1.
Example of Remote Output Reset Control
By default the scanner sets the bits in M0:e.24 through M0:e.27 to 1
wherever there are configured devices present. This commands all
devices’ outputs to reset regardless of their
Hold Last State
switch. The
application program can remove commanded reset of devices by
resetting bits to 0.
ATTENTION
The use of the device’s
Hold Last State
switch can
result in its outputs remaining energized when not
under control of the SLC processor. We recommend
the use of this function only by experienced SLC
programmers.
M0 File
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Bit Number (decimal)
M0 (Control) File W
ords 24 through 27
Logical Rack 0 Remote Output Reset Word 24
M0:e.24
M0:e.25
M0:e.26
M0:e.27
Logical Rack 1 Remote Output Reset Word 25
Logical Rack 2 Remote Output Reset Word 26
Logical Rack 3 Remote Output Reset Word 27
e = slot number of the SLC rack containing the scanner
x = not used/defined
Not Defined
Starting Group
0
2
4
6
1
0
0
1
x
x
x
x
x
x
x
x
x
x
x
x
1
0
0
0
x
x
x
x
x
x
x
x
x
x
x
x
0
1
0
0
x
x
x
x
x
x
x
x
x
x
x
x
0
1
0
0
x
x
x
x
x
x
x
x
x
x
x
x
1
0
0
1
x
x
x
x
x
x
x
x
x
x
x
x
1
0
0
0
x
x
x
x
x
x
x
x
x
x
x
x
0
1
0
0
x
x
x
x
x
x
x
x
x
x
x
x
0
1
0
0
x
x
x
x
x
x
x
x
x
x
x
x
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
M0 File
M0:e.24
M0:e.25
M0:e.26
M0:e.27
1
1
0
0
1
0
0
0
0
1
0
0
0
1
0
0
Device Address, Word 1
G File
RIO Rack 0
Starting Group
0
2
4
6
RIO Rack 1
Starting Group
0
2
4
6
RIO Rack 2
Starting Group
0
2
4
6
RIO Rack 3
Starting Group
0
2
4
6
M0 (Control) File
Bit Number (decimal)
Logical Rack 0 Remote Output Reset Word 24
Logical Rack 1 Remote Output Reset Word 25
Logical Rack 2 Remote Output Reset Word 26
Logical Rack 3 Remote Output Reset Word 27
e = slot number of the SLC rack containing the scanner
x = not used/defined
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