Preset Data Starting Location - Automation Direct DL05 User Manual

Preset Data Starting Location

V7630 is a pointer location which points to the beginning of the
Preset Data Table. The default starting location for the Preset
Data Table is V2320 (default after initializing scratchpad
V-memory). However, you may change this by programming a
different value in V7630. Use the LDA and OUT instructions as
shown:
LDA
O2000
OUT
V7630
Using Fewer than 24 Presets
When using fewer than 24 preset registers, the HSIO looks for
"0000 FFFF" (use LDD Kffff ) in the next preset location to
indicate the last preset has been reached. The example to the right
uses four presets. The 0000 FFFF in V2331-V2330 indicates the
previous preset was the last.
NOTE: Each successive preset must be greater than the previous preset value. If a preset value is less than a
lower-numbered preset value, the CPU cannot compare for that value, since the counter can only count
upwards.
Equal Relay Numbers
The following table lists all 24 preset register default locations. Each occupies two 16-bit
V-memory registers. The corresponding special relay contact number is in the next column.
We might also call these "equal" relay contacts, because they are true (closed) when the
present high-speed counter value is equal to the preset value. Each contact remains closed
until the counter value equals the next preset value.
Preset V-memory
Preset
Register
1 V2321 / V2320
2 V2323 / V2322
3 V2325 / V2324
4 V2327 / V2326
5 V2331 / V2330
6 V2333 / V2332
7 V2335 / V2334
8 V2337 / V2336
9 V2341 / V2340
10 V2343 / V2342
11 V2345 / V2344
12 V2347 / V2346
Appendix E: High-speed Input and Pulse Output Features
Load the octal address,
convert to hex, leave
result in accumulator.
Output this address to
V7630, the location of the
pointer to the Preset data.
Preset Register Table
Special Relay
Preset
Number
SP540
SP541
SP542
SP543
SP544
SP545
SP546
SP547
SP550
SP551
SP552
SP553
DL05 Micro PLC User Manual, 6th Edition, Rev. A
Preset Table Pointer
V7630
V2000
V2002
V2004
V2006
V2076
V2320
V2322
V2324
V2326
V2330
Preset V-memory
Register
13 V2351 / V2350
14 V2353 / V2352
15 V2355 / V2354
16 V2357 / V2356
17 V2361 / V2360
18 V2363 / V2362
19 V2365 / V2364
20 V2367 / V2366
21 V2371 / V2370
22 V2373 / V2372
23 V2375 / V2374
24 V2377 / V2376
1
2000
2
1000
0000
3
0000 2000
0000 2500
0000 3175
D
E
0000 0000
6
0000 1000
0000 2000
7
0000 2500
0000 3175
8
0000 FFFF
9
10
11
1
1
Special Relay
14
Number
SP554
SP555
A
SP556
SP557
B
SP560
SP561
SP562
C
SP563
SP564
D
SP565
SP566
SP567
E–9