Allen-Bradley 1747-SN - M0 File - RIO Device Reset Control; Example of Device Reset Control

4–16 Scanner Configuration and Programming
Publication 17476.6 - July 1996
M0 File - RIO Device Reset Control
M0 Words 16 through 19 – you use these words to command a
reset (0) of RIO device outputs when the SLC processor is in Run or
Test mode. This allows you to selectively reset logical device
outputs based on a previous condition(s) that you defined. Bits 0 – 3
correspond to the logical I/O group locations within logical racks 0,
1, 2, and 3.
To command an RIO device to a reset (0) condition (from Run or
Test mode), set the bit corresponding to the starting logical address
of the device to 1. Setting bits that do not correspond to a device
starting address will not force a reset. To remove the reset condition,
reset the bit (corresponding to the device logical starting address) to
0. Refer to the mode table on page 4–20.
Default: The SLC processor resets all bits in this field to 0 when it
enters Run or Test mode.
M0 File
0123456789101112131415
Bit Number (decimal)
M0 (Control) File Words 16 through 19
Logical Rack 0 Device Reset Word 16
M0:e.16
0000xxxxxxxxxxxx
M0:e.17
0000xxxxxxxxxxxx
M0:e.18
0000xxxxxxxxxxxx
M0:e.19
Logical Rack 1 Device Reset Word 17
Logical Rack 2 Device Reset Word 18
Logical Rack 3 Device Reset Word 19
e = slot number of the SLC rack containing the scanner
x = bit not used/defined
0000xxxxxxxxxxxx
Not Defined
Starting Group
0246
Example of Device Reset Control
The application has commanded the device starting at Logical Rack 0,
Group 0 (M0:e.16/0) to a reset condition (bit set to 1). The default
setting for all device reset bits is 0.
0000xxxxxxxxxxxx
0000xxxxxxxxxxxx
0000xxxxxxxxxxxx
1000xxxxxxxxxxxx
0123456789101112131415
M0 File
M0:e.16
M0:e.17
M0:e.18
M0:e.19
1 100
1
00001000100 Device Address, Word 1
G File
M0 (Control) File
Bit Number (decimal)
e = slot number of the SLC rack containing the scanner
x = bit not used/defined
Logical Rack 0 Device Reset Word 16
Logical Rack 1 Device Reset Word 17
Logical Rack 2 Device Reset Word 18
Logical Rack 3 Device Reset Word 19
RIO Logical Rack 0
Starting Group
0246
RIO Logical Rack 1
Starting Group
0246
RIO Logical Rack 2
Starting Group
0246
RIO Logical Rack 3
Starting Group
0246