Rio communication retry counter (m1:e.16 -47), Rio communication retry counter (m1:e.16 -47) -30, M1 (status) file complementary – Rockwell Automation 1747-SN Remote I/O Scanner User Manual
Page 74: G file, Important
Publication 1747-UM013B-EN-P - January 2005
4-30 Scanner Configuration and Programming
RIO Communication Retry
Counter (M1:e.16 -47)
M1 File Status Words 16 through 47 - indicate how many RIO
communication retries the scanner makes to each adapter on the RIO
link if communication problems occur. Each word (16 through 47)
contains a retry counter for each configured quarter logical rack
(words 16 through 31 are for primary logical racks, 0 through 3, and
32 through 47 are for complementary racks, 8 through 11). Retry
counters are useful for troubleshooting communication problems
(such as electrical noise or poor communication line connections)
between the scanner and any adapters. The scanner clears the retry
counters when going from Program to Run mode, Test to Run mode,
and when going from Program to Test mode. Note that the display (in
words M1:e.16 through 31) of retry counters corresponds to the bits
set in the Primary Logical Device Address - Word 1 of the G file.
Likewise, the display (in words M1:e.32 through 47) correspond to the
bits set in the Complementary Logical Device Address - Word 3 of the
G file.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
1
x
x
x
x
x
x
x
x
x
x
x
x
x
x
RIO Logical
Rack 8
Status Word, Word 0
RIO Logical
Rack 9
RIO Logical
Rack 10
RIO Logical
Rack 1 1
1
0
x
x
x
x
x
x
x
x
x
x
x
x
x
x
Baud Rate, Word 2
M1:e.0
M1 File
M1:e.2
Complementary Device Starting Address, Word 3
M1:e.3
Complementary Device Image Size, Word 4
M1:e.4
Complementary Active Device Status, Word 5
M1:e.5
0
0
0
0
x
x
x
x
x
x
x
x
Logical Rack 8 Device Fault Status Word 12
M1:e.12
0
0
0
0
x
x
x
x
x
x
x
x
M1:e.13
0
0
0
0
x
x
x
x
x
x
x
x
M1:e.14
0
1
1
1
x
x
x
x
x
x
x
x
M1:e.15
Logical Rack 9 Device Fault Status Word 13
Logical Rack 10 Device Fault Status Word 14
Logical Rack 11 Device Fault Status Word 15
M1 (Status) File Complementary
1
1
0
0
1
0
0
0
0
1
0
0
0
1
0
0
1
0
0
1
1
1
1
1
0
1
1
0
0
1
1
1
1
0
0
1
1
0
0
0
0
1
0
0
0
0
0
0
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
1
1
0
0
1
0
0
0
0
1
0
0
0
1
0
0
1
0
0
1
1
1
1
1
0
1
1
0
0
1
1
1
RIO Logical Rack 1
1
Starting Group
0
2
4
6
Complementary Logical Device Address, Word 3
Complementary Logical Image Size, Word 4
e = slot number of the SLC rack containing the scanner
x = not used/defined
G File
Bit Number (decimal)
RIO Logical Rack 10
Starting Group
0
2
4
6
RIO Logical Rack 9
Starting Group
0
2
4
6
RIO Logical Rack 8
Starting Group
0
2
4
6
IMPORTANT
Individual quarter logical racks within a device
cannot be faulted. Therefore, only the starting logical
group of the device needs to be monitored.