678
Auxiliary Area Allocations by Function
Appendix C
System Flags
Error Counter
Reset Bit
Turn ON this bit to reset the Error Counter Present Value
and turn OFF the Error Counter Error Flag.
Read/write
---
Error Counter Dis-
able Bit
Turn ON this bit to hold the error counter value.
ON: Error counter value held.
OFF: Error counter value not held.
Read/write
---
Present Value of
High-speed
Counter
These words contain the present value of the high-speed
counter.
Read
• Cleared when power is turned ON.
• Cleared when operation starts.
• Updated each cycle during over-
see process.
• Updated when present value is
read using PRV instruction.
Present Value of
Internal Pulse
Output, Absolute
Value for Abso-
lute Coordinates
These words contain the absolute value of the actual
movement in relation to the internal pulse origin when
pulses are being output to the error counter.
Data range: 8000 0000 to 7FFF FFFF hex
(
−
2,147,483,648 to 2,147,483,647)
Read
• Cleared when power is turned ON.
• Cleared when operation starts.
• Updated each error counter cycle.
Name
Address
Description
Access
Updated
First Cycle Flag
A200.11
ON for one cycle after PLC operation begins (after the
mode is switched from PROGRAM to RUN or MONI-
TOR, for example).
Read-only
Initial Task Execution Flag
A200.15
ON when a task is executed for the first time, i.e., when it
changes from INI to RUN status.
Read-only
Task Started Flag
A200.14
When a task switches from WAIT or INI to RUN status,
this flag will be turned ON within the task for one cycle
only.
Note
The only difference between this flag and
A200.15 is that this flag also turns ON when the
task switches from WAIT to RUN status.
Read-only
Maximum Cycle Time
A262 to
A263
These words contain the maximum cycle time since the
start of PLC operation. The cycle time is recorded in 8-
digit hexadecimal with the leftmost 4 digits in A263 and
the rightmost 4 digits in A262.
0 to FFFFFFFF: 0 to 429,496,729.5 ms (0.1-ms units)
Read-only
Present Cycle Time
A264 to
A265
These words contain the present cycle time in 8-digit
hexadecimal with the leftmost 4 digits in A265 and the
rightmost 4 digits in A264.
Read-only
10-ms Incrementing Free
Running Timer
A0
This word contains the system timer used after the
power is turned ON.
A value of 0000 hex is set when the power is turned ON
and this value is automatically incremented by 1 every
10 ms. The value returns to 0000 hex after reaching
FFFF hex (655,350 ms), and then continues to be auto-
matically incremented by 1 every 10 ms.
Note:
The timer will continue to be incremented when
the operating mode is switched to RUN mode.
Example: The interval can be counted between
processing A and processing B without requiring timer
instructions. This is achieved by calculating the
difference between the value in A0 for processing A and
the value in A0 for processing B. The interval is counted
in 10 ms units.
Read-only
100-ms Incrementing Free
Running Timer
A1
This word contains the system timer used after the
power is turned ON.
A value of 0000 hex is set when the power is turned ON
and this value is automatically incremented by 1 every
100 ms. The value returns to 0000 hex after reaching
FFFF hex (6,553,500 ms), and then continues to be
automatically incremented by 1 every 100 ms.
Note:
The timer will continue to be incremented when
the operating mode is switched to RUN mode.
Example: The interval can be counted between
processing A and processing B without requiring timer
instructions. This is achieved by calculating the
difference between the value in A0 for processing A and
the value in A0 for processing B. The interval is counted
in 100 ms units.
Read-only
Name
Description
Read/Write
Updated
Summary of Contents for CP1L-EL20DR-D
Page 3: ...CP1L EL20D CP1L EM30D CP1L EM40D CP1L EL EM CPU Unit Operation Manual Produced July 2017...
Page 4: ...iv...
Page 10: ...x...
Page 22: ...xxii...
Page 34: ...xxxiv Software Licenses and Copyrights 7...
Page 192: ...158 Trial Operation and Debugging Section 5 3...
Page 250: ...216 Automatic Clock Adjustment and Specifying Servers by Host Name Section 6 7...
Page 666: ...632 Trouble Shooting Section 11 7...
Page 696: ...662 Standard Models Appendix A...
Page 805: ...771 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 806: ...772 Connections to Serial Communications Option Boards Appendix F...
Page 836: ...802 PLC Setup Appendix G...
Page 838: ...804 TCP Status Transitions Appendix H...
Page 840: ...806 Ethernet Network Parameters Appendix I...
Page 842: ...808 Buffer Configuration CP1L EL EM Appendix J...
Page 844: ...810 Ethernet Specifications Appendix K...
Page 851: ...Index 817 work words 118 write protection 447...
Page 852: ...818 Index...
Page 854: ...820 Revision History...
Page 855: ......