
Appendix E
DL305 Memory Map
E–12
DL305 Data Types and Memory Map
Timer / Counter Registers and Contacts
The following table shows the locations used for programming timer or counters.
Since timers and counters share the same data area, you cannot have timers and
counters with duplicate numbers. For example, if you have Timer 600, you cannot
have a Counter 600.
Each register contains the current value for the timer or counter. Each timer or
counter also has a timer or counter contact with the same reference number.
NOTE: Counter current values are retentive and retain their state after a power
cycle.
Timer/Counter References/Registers
607 606 605 604 603 602 601 600
617 616 615 614 613 612 611 610
627 626 625 624 623 622 621 620
637 636 635 634 633 632 631 630
647 646 645 644 643 642 641 640
657 656 655 654 653 652 651 650
667 666 665 664 663 662 661 660
677* 676* 675* 674* 673 672 671 670
* Used with Timer / Counter Setpoint Unit and /or Thumbwheel Interface Module.
Registers 674–677 are used in programming for use with the Timer/Counter
Setpoint Unit and the Thumbwheel Interface Module that are available in some
compatible product families. The registers contain the current time or count. There is
also a status bit for each register with the same reference number. For example, the
current value for Timer 674 is stored in R674 and the status contact is T674.
The presets for these modules are stored
in R564 – R573 as follows.
S R564 – R565 — 1st T/C preset
S R566 – R567 — 2nd T/C preset
S R570 – R571 — 3rd T/C preset
S R572 – R573 — 4th T/C preset
The example shows how a 4-digit
number would be represented in these
registers.
0 10010011 0100010
1 3 4 5
R565 R564
External
Timer/Counter
Setpoint Unit
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