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158
Timers and Counters
Section 4-9
The refresh method for counter PVs can be set from the CX-Programmer to
either BCD or binary. (Refer to the previous page).
It is not recommended to use the same counter number in two counter
instructions because the counters will not operate correctly if they are count-
ing simultaneously. If two or more counter instructions use the same counter
number, an error will be generated during the program check, but the counters
will operate as long as the instructions are not executed in the same cycle.
The following table shows when counter PVs and Completion Flags will be
reset.
Forcing Bit Status
Counter Completion Flags can be force-set and force-reset.
Counter PVs cannot be force-set or force-reset, although the PVs can be
refreshed indirectly by force-setting/resetting the Completion Flag.
Restrictions
There are no restrictions in the order of using counter numbers or in the num-
ber of N.C. or N.O. conditions that can be programmed. Counter PVs can be
read as word data and used in programming.
Instruction name
Effect on PV and Completion Flag
Reset
Mode
change
PLC startup
Reset Input
CNR(545)/CN
RX(547)
Interlocks
(IL-ILC)
COUNTER:
CNT/CNTX(546)
PV
→
0
Flag
→
OFF
Maintained
Maintained
Reset
Reset
Maintained
REVERSIBLE
COUNTER:
CNTR(012)/CNTRX(548)
COUNTER WAIT:
CNTW(814)/CNTWX(818)
Содержание CP1L CPU UNIT - 03-2009
Страница 1: ...Cat No W462 E1 06 CP1L CPU Unit SYSMAC CP Series CP1L L_0D_ CP1L M_0D_ OPERATION MANUAL...
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Страница 4: ...iv...
Страница 10: ...x...
Страница 22: ...xxii...
Страница 34: ...xxxiv Conformance to EC Directives 6...
Страница 70: ...36 Function Blocks Section 1 5...
Страница 584: ...550 Trouble Shooting Section 8 7...
Страница 627: ...593 Sample Application Section 9 12 Network Settings Network Tab Network Settings Driver Tab...
Страница 630: ...596 Sample Application Section 9 12...
Страница 654: ...620 Troubleshooting Unit Errors Section 11 4...
Страница 662: ...628 Replacing User serviceable Parts Section 12 2...
Страница 668: ...634 Standard Models Appendix A...
Страница 698: ...664 Auxiliary Area Allocations by Function Appendix C...
Страница 746: ...712 Auxiliary Area Allocations by Address Appendix D...
Страница 773: ...739 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 774: ...740 Connections to Serial Communications Option Boards Appendix F...
Страница 806: ...772 Index...
Страница 808: ...774 Revision History...