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1171
Other Instructions
Section 3-31
Description
WDT(094) extends the maximum cycle time for the cycle in which this instruc-
tion is executed. The watchdog timer setting in the PLC Setup is extended by
an interval of T
×
10 ms (0 to 39,990 ms).
The following screen capture shows the PLC Setup setting from the CX-Pro-
grammer.
The following table shows the watchdog timer settings in the PLC Setup. The
default value for the maximum cycle time is 1,000 ms, although it can be set
anywhere from 1 to 40,000 ms in 10-ms units.
Flags
The following table shows relevant flags and words in the Auxiliary Area.
Precautions
WDT(094) can be used more than once in a cycle. When WDT(094) is exe-
cuted more than once the cycle time extensions are added together, although
DM Area
---
EM Area without bank
---
EM Area with bank
---
Indirect DM/EM
addresses in binary
---
Indirect DM/EM
addresses in BCD
---
Constants
0000 to 0F9F (binary)
Data Registers
---
Index Registers
---
Indirect addressing
using Index Registers
---
Area
T
Name
Function
Settings
Watch cycle
time
A Cycle Time Too Long error (fatal
error) will be registered if the cycle time
exceeds the maximum setting.
0: Default setting (1,000 ms)
1: User time setting
Sets the maximum cycle time.
(This setting is valid only when the first
setting has been set to 1.)
0001 to 0FA0
(1 to 40,000 ms, 10-ms units)
Name
Label
Operation
Error Flag
ER
ON if the watchdog timer setting exceeds 40 seconds.
OFF in all other cases.
Name
Address
Operation
Cycle Time Too Long
Flag
A40108
ON when the present cycle time exceeds the
maximum cycle time (watch cycle time) set in the
PLC Setup. This is a fatal error which causes pro-
gram execution to stop.
Maximum Cycle
Time
A262 and
A263
These words contain the maximum cycle time in
32-bit binary. This value is updated every cycle.
Present Cycle Time
A264 and
A265
These words contain the present cycle time in 32-
bit binary. This value is updated every cycle.
Содержание SYSMAC CS1D-CPU**
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Страница 185: ...146 List of Instructions by Function Code Section 2 4...
Страница 193: ...154 3 35 4 MOVE BIT MOVBC 568 1274 3 35 5 BIT COUNTER BCNTC 621 1276 3 35 6 GET VARIABLE ID GETID 286 1278...
Страница 1389: ...1350 CJ series Instruction Execution Times and Number of Steps Section 4 2...
Страница 1390: ...1351 Appendix A ASCII Code Table ASCII SP Four leftmost bits Four rightmost bits...
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