Publication 1762-RM001C-EN-P
System Status File C-15
Math Register
These two words are used in conjunction with the MUL, DIV, FRD, and
TOD math instructions. The math register value is assessed upon
execution of the instruction and remains valid until the next MUL, DIV,
FRD, or TOD instruction is executed in the user program.
Node Address
This address is duplicated in the Communications Status File (CSx:0.5/0
through CSx:0.5/7). See General Channel Status Block on page 3-14 for
more information.
Baud Rate
This address is duplicated in the Communications Status File (CSx:0.5/8
through CSx:0.5/15). See General Channel Status Block on page 3-14 for
more information.
Maximum Scan Time
This word indicates the maximum observed interval between consecutive
program scans.
The controller compares each scan value to the value contained in S:22. If
a scan value is larger than the previous, the larger value is stored in S:22.
This value indicates, in 100 us increments, the time elapsed in the longest
program cycle of the controller. Resolution is -100 µs to +0 µs. For
example, the value 9 indicates that 800 to 900 us was observed as the
longest program cycle.
Address Data Format Range Type User Program Access
S:13
(low byte)
word -32,768 to
+32,767
status read/write
S:14
(high byte)
word -32,768 to
+32,767
status read/write
Address
(1)
(1) This byte can only be accessed via ladder logic. It cannot be accessed via communications (such as a Message
instruction from another device).
Data Format Range Type User Program Access
S:15 (low byte) byte 0 to 255 status read only
Address
(1)
(1) This byte can only be accessed via ladder logic. It cannot be accessed via communications (such as a Message
instruction from another device).
Data Format Range Type User Program Access
S:15 (high byte) byte 0 to 255 status read only
Address Data Format Range Type User Program Access
S:22 word 0 to 32,767 status read/write
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