Rockwell Automation 1761 MicroLogix 1000 Programmable Controllers - Manual (Page 307)

ReferenceReference
Programming Reference
B–19
Address Description Classification Bit
S:15H DF1 Baud
Rate Status This byte value contains a code used to select
the baud rate of the processor on the DF1 link.
The controller baud rate options are:
•
300
•
600
•
1200
•
2400
•
4800
•
9600 (default)
•
19200
•
38400
To change the baud rate from the default value
you must use a programming device.
S:16L DH-485
Node
Address Status This byte value contains the node address of
your processor on the DH-485 link. Each device
on the DH-485 link must have a unique address
between the decimal values 1–31. To change a
processor node address, you must use a
programming device.
S:16H DH-485
Baud Rate Status This byte value contains the baud rate of the
processor on the DH-485 link.
The controller baud rate options are:
•
9600
•
19200 (default)
To change the baud rate from the default value,
you must use a programming device.
S:17 to
S:21 Reserved NA NA
S:22 Maximum
Observed
c
Dynamic
Configuration This word indicates the maximum observed
interval between consecutive program cycles.
b
Scan Time
C f
This value indicates, in 10 ms increments, the
time elapsed in the longest program cycle of the
controller. Refer to S:3L for more information
regarding the program cycle. The controller
compares each last scan value to the value
contained in S:22. If the controller determines
that the last scan value is larger than the value
stored at S:22, the last scan value is written to
S:22.
Resolution of the maximum observed scan time
value is
+
0 to
−
10 ms. For example, the value 9
indicates that 80–90 ms was observed as the
longest program cycle.
Interrogate this value if you need to determine or
verify the longest scan time of your program.