Last modified by Edwin Chen on 2022/11/22 09:38
<
From version < 24.1 >
edited by Edwin Chen
on 2022/11/16 15:38
To version < 19.2 >
edited by Xiaoling
on 2022/11/15 08:47
>
Change comment: There is no comment for this version

Summary

Details

Page properties
Author
... ... @@ -1,1 +1,1 @@
1 -XWiki.Edwin
1 +XWiki.Xiaoling
Content
... ... @@ -1,4 +1,4 @@
1 -**Table of Contents： **
1 +**Contents： **
2 2  
3 3  {{toc/}}
4 4  
... ... @@ -5,7 +5,7 @@
5 5  
6 6  
7 7  
8 -= 1. Overview =
8 += **1. Overview** =
9 9  
10 10  (((
11 11  
... ... @@ -14,39 +14,40 @@
14 14  )))
15 15  
16 16  (((
17 - [[LT22222-L_PingPong_Software>>https://github.com/dragino/LT-22222-L]]
18 -
19 -
17 +[[Point to Point Software for LT-22222-L>>https://github.com/dragino/LT-22222-L]].
20 20  )))
21 21  
22 -= 2. Features for this firmware =
23 23  
24 -== 2.1  Point To Point ==
21 += **2. Features for this firmware** =
25 25  
26 -=== 2.1.1 Overview ===
23 +== **2.1  Point To Point** ==
27 27  
25 +=== **2.1.1 Overview** ===
28 28  
27 +
29 29  [[image:image-20220602111219-1.png||height="472" width="972"]]
30 30  
31 31  
32 -=== 2.2.2 Configure ===
31 +=== **2.2.2 Configure** ===
33 33  
34 34  
35 -(% border="1" style="background-color:#f7faff; color:black; width:360px" %)
36 -|=(% style="width: 179px;" %)**A's configuration**|=(% style="width: 177px;" %)**B's configuration**
37 -|(% style="width:179px" %)AT+GROUPMOD=0|(% style="width:177px" %)AT+GROUPMOD=0
38 -|(% style="width:179px" %)AT+TXCHS=868700000|(% style="width:177px" %)AT+TXCHS=869000000
39 -|(% style="width:179px" %)AT+RXCHS=869000000|(% style="width:177px" %)AT+RXCHS=868700000
40 -|(% style="width:179px" %)AT+TRIG1=2,50|(% style="width:177px" %)AT+TRIG1=2,50
41 -|(% style="width:179px" %)AT+TRIG2=2,50|(% style="width:177px" %)AT+TRIG2=2,50
42 -|(% style="width:179px" %)AT+DI1TODO1=2|(% style="width:177px" %)AT+DI1TODO1=2
43 -|(% style="width:179px" %)AT+DI1TORO1=2|(% style="width:177px" %)AT+DI1TORO1=2
44 -|(% style="width:179px" %)AT+DI2TODO2=2 |(% style="width:177px" %)AT+DI2TODO2=2
45 -|(% style="width:179px" %)AT+DI2TORO2=2|(% style="width:177px" %)AT+DI2TORO2=2
34 +(% border="1" style="background-color:#f7faff; color:black; width:500px" %)
35 +|=**A's configuration**|=**B's configuration**
36 +|AT+GROUPMOD=0|AT+GROUPMOD=0
37 +|AT+TXCHS=868700000|AT+TXCHS=869000000
38 +|AT+RXCHS=869000000|AT+RXCHS=868700000
39 +|AT+TRIG1=2,50|AT+TRIG1=2,50
40 +|AT+TRIG2=2,50|AT+TRIG2=2,50
41 +|AT+DI1TODO1=2|AT+DI1TODO1=2
42 +|AT+DI1TORO1=2|AT+DI1TORO1=2
43 +|AT+DI2TODO2=2 |AT+DI2TODO2=2
44 +|AT+DI2TORO2=2|AT+DI2TORO2=2
46 46  
47 -=== 2.2.3 Serial port display ===
48 48  
49 49  
48 +=== **2.2.3 Serial port display** ===
49 +
50 +
50 50  (% class="wikigeneratedid" %)
51 51  [[image:image-20220602111219-2.png]]
52 52  
... ... @@ -59,15 +59,15 @@
59 59  If the sender does not get the ACK reply from the receiver, it will retransmit up to 4 times, each interval is 6 seconds, and the UplinkCounter of the retransmission will not increase.
60 60  
61 61  
62 -== 2.2  Point To Mult-Point ==
63 +== **2.2  Point To Mult-Point ** ==
63 63  
64 -=== 2.2.1 Overview ===
65 +=== **2.2.1 Overview** ===
65 65  
66 66  
67 67  [[image:1654152390874-192.png]]
68 68  
69 69  
70 -=== 2.2.2  Configure ===
71 +=== **2.2.2  Configure** ===
71 71  
72 72  
73 73  (% style="color:blue" %)**Configuration of the TX group:**
... ... @@ -109,7 +109,7 @@
109 109  AT+RXCHS=868700000
110 110  
111 111  
112 -=== 2.2.3 Serial port display ===
113 +=== **2.2.3 Serial port display** ===
113 113  
114 114  
115 115  [[image:image-20220602144747-1.png]]
... ... @@ -117,13 +117,12 @@
117 117  
118 118  [[image:image-20220602144747-2.png]]
119 119  
120 -
121 121  (((
122 122  If the TX group does not receive all the ACK replies from the RX group, it will retransmit up to 4 times, each time interval is 30 seconds, and the retransmission UplinkCounter will not increase.
123 123  )))
124 124  
125 125  
126 -== 2.3 AT command ==
126 +== **2.3 AT command** ==
127 127  
128 128  
129 129  (((
... ... @@ -225,8 +225,9 @@
225 225  )))
226 226  
227 227  
228 +
228 228  (((
229 -(% style="color:blue" %)**Example 1:**
230 +(% style="color:#4f81bd" %)**Example 1:**
230 230  )))
231 231  
232 232  (((
... ... @@ -234,6 +234,7 @@
234 234  )))
235 235  
236 236  
238 +
237 237  (((
238 238  (% style="color:blue" %)**Example 2: **
239 239  )))
... ... @@ -247,23 +247,23 @@
247 247  )))
248 248  
249 249  (((
250 -**a=0:** falling edge;
252 +a=0: falling edge;
251 251  )))
252 252  
253 253  (((
254 -**a=1: **rising edge;
256 +a=1: rising edge;
255 255  )))
256 256  
257 257  (((
258 -**a=2:** falling edge or rising edge;
260 +a=2: falling edge or rising edge;
259 259  )))
260 260  
261 261  (((
262 -**b:**  triggering time in milliseconds.
264 +b:  triggering time in milliseconds.
263 263  )))
264 264  
265 265  (((
266 -**AT+TRIGx=2,50**  Falling edge or rising edge trigger, and the trigger time exceeds 50ms.
268 +AT+TRIGx=2,50  Falling edge or rising edge trigger, and the trigger time exceeds 50ms.
267 267  )))
268 268  
269 269  
... ... @@ -291,12 +291,12 @@
291 291  
292 292  )))
293 293  
294 -(% border="1" style="background-color:#f7faff; color:black; width:690px" %)
296 +(% border="1" style="background-color:#f7faff; color:black; width:706px" %)
295 295  |=(% style="width: 102px;" %)(((
296 296  Maps value
297 297  )))|=(% style="width: 331px;" %)(((
298 298  DIx to DOx
299 -)))|=(% style="width: 251px;" %)(((
301 +)))|=(% style="width: 268px;" %)(((
300 300  DIx to ROx
301 301  )))
302 302  |(% style="width:102px" %)(((
... ... @@ -303,7 +303,7 @@
303 303  0
304 304  )))|(% style="width:331px" %)(((
305 305  No Action
306 -)))|(% style="width:251px" %)(((
308 +)))|(% style="width:268px" %)(((
307 307  No Action
308 308  )))
309 309  |(% style="width:102px" %)(((
... ... @@ -310,7 +310,7 @@
310 310  1
311 311  )))|(% style="width:331px" %)(((
312 312  If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level
313 -)))|(% style="width:251px" %)(((
315 +)))|(% style="width:268px" %)(((
314 314  (((
315 315  If DIx is high, control ROx to close,
316 316  )))
... ... @@ -323,7 +323,7 @@
323 323  2
324 324  )))|(% style="width:331px" %)(((
325 325  If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level
326 -)))|(% style="width:251px" %)(((
328 +)))|(% style="width:268px" %)(((
327 327  (((
328 328  If DIx is high, control ROx to open,
329 329  )))
... ... @@ -336,13 +336,11 @@
336 336  3
337 337  )))|(% style="width:331px" %)(((
338 338  DOx state flip
339 -)))|(% style="width:251px" %)(((
341 +)))|(% style="width:268px" %)(((
340 340  ROx state flip
341 341  )))
342 342  
343 343  (((
344 -
345 -
346 346  (% style="color:blue" %)**Example 4: **
347 347  )))
348 348  
... ... @@ -354,10 +354,12 @@
354 354  **AT+GROUPMOD=0,aa**  Set the TX group that controls the number of aa (The maximum value of aa is 8)
355 355  )))
356 356  
357 +
357 357  (((
358 358  **AT+GROUPMOD=1,bb**  Set to the RX group controlled by the TX group, numbered bb(The maximum value of aa is 8)
359 359  )))
360 360  
362 +
361 361  (((
362 362  **AT+GROUPMOD=0,2**  Set to control the TX group of the two RX groups
363 363  )))
... ... @@ -374,41 +374,40 @@
374 374  === 2.3.1 TRIG command is configured in the transmit LT. (LT1)(Since firmware 1.3) ===
375 375  
376 376  
377 -**AT+TRIGx=a          **Trigger transmit directly without triggering time
379 +**AT+TRIGx=a     **Trigger transmit directly without triggering time
378 378  
379 -**AT+TRIGx=a,b**  Trigger transmit with triggering time threshold
381 +**AT+TRIGx=a,b**  Trigger transmit with triggering time threshold
380 380  
381 -**AT+TRIGx=a,b,c    **Trigger transmit with triggering time threshold, and continue to transmit every xx seconds if DI status no change.
383 +**AT+TRIGx=a,b,c **Trigger transmit with triggering time threshold, and continue to transmit every xx seconds if DI status no change.
382 382  
383 383  
384 -**a=0:** falling edge;
386 +a=0: falling edge;
385 385  
386 -**a=1:** rising edge;
388 +a=1: rising edge;
387 387  
388 -**a=2:** falling edge or rising edge;
390 +a=2: falling edge or rising edge;
389 389  
390 -**b:**  triggering time in milliseconds.
392 +b:  triggering time in milliseconds.
391 391  
392 -**c:** transmit interval
394 +c: transmit interval
393 393  
394 394  
395 -(% style="color:blue" %)**Use Case 1**(%%):  Once the DI1 port status change ( either from low to high or high to low, LT1 sends a trigger to LT-2)
397 +**(% style="color:blue" %)Use Case 1**(%%): Once the DI1 port status change ( either from low to high or high to low, LT1 sends a trigger to LT-2)
396 396  
397 -**Command:**
399 +Command:
398 398  
399 -**AT+TRIG1=2,50**  Falling edge or rising edge trigger, and the trigger time should exceed 50ms.
401 +AT+TRIG1=2,50  Falling edge or rising edge trigger, and the trigger time should exceed 50ms.
400 400  
401 401  
402 -(% style="color:blue" %)**Use Case 2:  **(%%)Sync LT2 RO / DO status with LT1 every minute.
404 +**(% style="color:blue" %)Use Case 2: **(%%)Sync LT2 RO / DO status with LT1 every minute.
403 403  
404 -**Command:**
406 +Command:
405 405  
406 -**AT+TRIG2=2,50,60**  Once there is falling edge or rising edge on DI2 of LT1, LT1 will transmit trigger to LT2 and LT2 can sync the status of RO/DO. After power off, power on, LT1 will send trigger without falling/rising edge, so the DI changes during power off will be sync as well.
408 +AT+TRIG2=2,50,60 Once there is falling edge or rising edge on DI2 of LT1, LT1 will transmit trigger to LT2 and LT2 can sync the status of RO/DO.
407 407  
408 408  
409 409  === 2.3.2 RO/DO is configured in the receiver LT (LT2)(Since firmware 1.3) ===
410 410  
411 -
412 412  AT+DI1TODO1= maps value[,latch time]
413 413  
414 414  AT+DI1TORO1= maps value[,latch time]
... ... @@ -418,32 +418,32 @@
418 418  AT+DI2TORO2= maps value[,latch time]
419 419  
420 420  
421 -(% border="1" style="background-color:#f7faff; color:black; width:774px" %)
422 -|(% style="width:105px" %) **Maps value**|(% style="width:415px" %)**DIx to DOx**|(% style="width:249px" %)**DIx to ROx**
423 -|(% style="width:105px" %)0|(% style="width:415px" %)No Action|(% style="width:249px" %)No Action
424 -|(% style="width:105px" %)1|(% style="width:415px" %)If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level|(% style="width:249px" %)(((
422 +(% border="1" style="background-color:#f7faff; color:black; width:706px" %)
423 +| **Maps value**|DIx to DOx|DIx to ROx
424 +|0|No Action|No Action
425 +|1|If DIx is high, control DOx to output low level, If DIx is low, control DOx to output high level|(((
425 425  If DIx is high, control ROx to close,
426 426  
427 427  if DIx is low, control ROx to open
428 428  )))
429 -|(% style="width:105px" %)2|(% style="width:415px" %)If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level|(% style="width:249px" %)(((
430 +|2|If DIx is high, control DOx to output high level, If DIx is low, control DOx to output low level|(((
430 430  If DIx is high, control ROx to open,
431 431  
432 432  if DIx is low, control ROx to close
433 433  )))
434 -|(% style="width:105px" %)3|(% style="width:415px" %)DOx state flip|(% style="width:249px" %)ROx state flip
435 +|3|DOx state flip|ROx state flip
435 435  
436 436  latch time, if latch time is defined, DO or RO will go back to the original status after latch time, if there is a new trigger comes, the LT2 will use the new latch time settings and ignore the old one.
437 437  
438 438  
439 -(% style="color:blue" %)**Case1**:
440 +**(% style="color:blue" %)Case1**:
440 440  
441 -AT+DI1TODO1=1  ~/~/ LT2 DO1 will follow LT1 DI1 trigger command, if DI1 of LT1 is trigger high, DO1 of LT2 will output low, if DI1 of LT1 is trigger low, DO2 of LT2 will output high.
442 +AT+DI1TODO1=1 ~/~/ LT2 DO1 will follow LT1 DI1 trigger command, if DI1 of LT1 is trigger high, DO1 of LT2 will output low, if DI1 of LT1 is trigger low, DO2 of LT2 will output high.
442 442  
443 443  
444 -(% style="color:blue" %)**Case2**:
445 +**(% style="color:blue" %)Case2**:
445 445  
446 -AT+DI1TODO1=1,60  ~/~/ LT2 DO1 will follow LT1 DI1 trigger command, DO1 will keep the status 60 seconds and then go back to original state.
447 +AT+DI1TODO1=1,60 ~/~/ LT2 DO1 will follow LT1 DI1 trigger command, DO1 will keep the status 60 seconds and then go back to original state.
447 447  
448 448  
449 449  === 2.3.3 Save the RO/DO status during power off(Since firmware 1.3) ===
... ... @@ -451,98 +451,104 @@
451 451  
452 452  Enable/Disbale retain Digital Output/Relay Output after power off / Power On
453 453  
454 -**AT+DOROSAVE=0**  ~/~/ Disable Retain after power off/on
455 +AT+DOROSAVE=0 ~/~/ Disable Retain after power off/on
455 455  
456 -**AT+DOROSAVE=1**  ~/~/ Enable Retain after power off/on
457 +AT+DOROSAVE=1 ~/~/ Enable Retain after power off/on
457 457  
458 -**AT+DOROSAVE=2,a,b,c,d**  ~/~/ set DO/RO port to default state after power on.
459 +AT+DOROSAVE=2,a,b,c,d ~/~/ set DO/RO port to default state after power on.
459 459  
460 -**a: **for DO1
461 +a: for DO1
461 461  
462 -**b:** for DO2
463 +b: for DO2
463 463  
464 -**c: **for RO1
465 +c: for RO1
465 465  
466 -**d:** for RO2.
467 +d: for RO2.
467 467  
469 +Example:
468 468  
469 -**Example:**
471 +AT+DOROSAVE=2,0,0,0,1 ~/~/ Set DO1/DO2 to Low, RO1 to open after power on , set RO2 to close after power on.
470 470  
471 -AT+DOROSAVE=2,0,0,0,1  ~/~/ Set DO1/DO2 to Low, RO1 to open after power on , set RO2 to close after power on.
472 472  
473 -
474 474  === 2.3.4 Control Sleep status.(Since firmware 1.3) ===
475 475  
476 -
477 477  DI2 can be used to set LT into sleep mode.
478 478  
479 -**AT+DI2SLEEP=1**  ~/~/  Enable DI2 as Sleep pin
478 +AT+DI2SLEEP=1 ~/~/Enable DI2 as Sleep pin
480 480  
481 -**AT+DI2SLEEP=0**  ~/~/  Disable DI2 as Sleep pin
480 +AT+DI2SLEEP=0 ~/~/Disable DI2 as Sleep pin
482 482  
483 483  When DI2 is enabled as sleep pin, a falling trigger (with 500ms pulse) will set LT into sleep mode. A raising trigger will wake up it again.
484 484  
485 -In sleep mode, DORO will keep its initial state if AT+DOROSAVE=2, otherwise DORO will be in OFF state
486 486  
485 +== **2.4 Data Format** ==
487 487  
488 -== 2.4 Data Format ==
489 489  
490 -
491 491  (((
492 492  8 bytes of GROUPID + 9 bytes of payload + 4 bytes of checksum
493 493  )))
494 494  
495 495  (((
496 -(% style="color:blue" %)**Payload:Payload triggered by TDC or DI**
493 +
497 497  )))
498 498  
499 -(% border="1" style="background-color:#f7faff; color:black; width:825px" %)
500 -|=(% style="width: 102px;" %)(((
496 +(((
497 +(% style="color:blue" %)**Payload:**
498 +)))
499 +
500 +(% border="1" style="background-color:#f7faff; color:black; width:938px" %)
501 +|=(% style="width: 123px;" %)(((
501 501  **Size (bytes)**
502 -)))|=(% style="width: 74px;" %)(((
503 +)))|=(% style="width: 107px;" %)(((
503 503  1
504 -)))|=(% style="width: 72px;" %)(((
505 +)))|=(% style="width: 107px;" %)(((
505 505  1
506 -)))|=(% style="width: 47px;" %)(((
507 +)))|=(% style="width: 107px;" %)(((
507 507  1
508 -)))|=(% style="width: 83px;" %)(((
509 +)))|=(% style="width: 107px;" %)(((
509 509  1
510 -)))|=(% style="width: 90px;" %)(((
511 +)))|=(% style="width: 107px;" %)(((
511 511  1
512 -)))|=(% style="width: 92px;" %)(((
513 +)))|=(% style="width: 107px;" %)(((
513 513  1
514 -)))|=(% style="width: 78px;" %)(((
515 +)))|=(% style="width: 107px;" %)(((
515 515  1
516 -)))|=(% style="width: 91px;" %)(((
517 +)))|=(% style="width: 107px;" %)(((
517 517  1
518 -)))|=(% style="width: 91px;" %)(((
519 +)))|=(% style="width: 107px;" %)(((
519 519  1
520 520  )))
521 -|(% style="width:102px" %)(((
522 +|(% style="width:123px" %)(((
522 522  **Value**
523 -)))|(% style="width:74px" %)(((
524 +)))|(% style="width:38px" %)(((
524 524  address
525 -)))|(% style="width:72px" %)(((
526 +)))|(% style="width:70px" %)(((
526 526  request
527 -)))|(% style="width:47px" %)(((
528 +)))|(% style="width:52px" %)(((
528 528  ACK
529 -)))|(% style="width:83px" %)(((
530 +)))|(% style="width:127px" %)(((
530 530  (((
531 531  DI1&
533 +)))
534 +
535 +(((
532 532  DI1 level
533 533  )))
534 -)))|(% style="width:90px" %)(((
538 +)))|(% style="width:101px" %)(((
535 535  DI1TODO1
536 -)))|(% style="width:92px" %)(((
540 +)))|(% style="width:91px" %)(((
537 537  DI1TORO1
538 -)))|(% style="width:78px" %)(((
542 +)))|(% style="width:111px" %)(((
539 539  (((
540 540  DI2&
541 -DI2 leve
542 542  )))
543 -)))|(% style="width:91px" %)(((
546 +
547 +(((
548 +DI2 level
549 +)))
550 +)))|(% style="width:105px" %)(((
544 544  DI2TODO2
545 -)))|(% style="width:91px" %)(((
552 +)))|(% style="width:106px" %)(((
546 546  DI2TORO2
547 547  )))
548 548  
... ... @@ -589,56 +589,62 @@
589 589  (((
590 590  
591 591  
592 -(% style="color:blue" %)**Payload:（Since firmware 1.3）The receiver replies to the sent packet**
599 +(% style="color:#4f81bd" %)**Payload:（Since firmware 1.3）The receiver replies to the sent packet**
593 593  )))
594 594  
595 -(% border="1" style="background-color:#f7faff; color:black; width:822px" %)
596 -|=(% style="width: 97px;" %)(((
597 -**Size(bytes)**
598 -)))|=(% style="width: 71px;" %)(((
602 +(% border="1" style="background-color:#f7faff; color:black; width:938px" %)
603 +|=(% style="width: 123px;" %)(((
604 +**Size (bytes)**
605 +)))|=(% style="width: 107px;" %)(((
599 599  1
600 -)))|=(% style="width: 70px;" %)(((
607 +)))|=(% style="width: 107px;" %)(((
601 601  1
602 -)))|=(% style="width: 48px;" %)(((
609 +)))|=(% style="width: 107px;" %)(((
603 603  1
604 -)))|=(% style="width: 85px;" %)(((
611 +)))|=(% style="width: 107px;" %)(((
605 605  1
606 -)))|=(% style="width: 90px;" %)(((
613 +)))|=(% style="width: 107px;" %)(((
607 607  1
608 -)))|=(% style="width: 88px;" %)(((
615 +)))|=(% style="width: 107px;" %)(((
609 609  1
610 -)))|=(% style="width: 86px;" %)(((
617 +)))|=(% style="width: 107px;" %)(((
611 611  1
612 -)))|=(% style="width: 92px;" %)(((
619 +)))|=(% style="width: 107px;" %)(((
613 613  1
614 -)))|=(% style="width: 92px;" %)(((
621 +)))|=(% style="width: 107px;" %)(((
615 615  1
616 616  )))
617 -|(% style="width:97px" %)(((
624 +|(% style="width:123px" %)(((
618 618  **Value**
619 -)))|(% style="width:71px" %)(((
626 +)))|(% style="width:38px" %)(((
620 620  address
621 621  )))|(% style="width:70px" %)(((
622 622  request
623 -)))|(% style="width:48px" %)(((
630 +)))|(% style="width:52px" %)(((
624 624  ACK
625 -)))|(% style="width:85px" %)(((
632 +)))|(% style="width:127px" %)(((
626 626  (((
627 -DOI1&
628 -DOI2 level
634 +DO1&
629 629  )))
630 -)))|(% style="width:90px" %)(((
636 +
637 +(((
638 +DO1 level
639 +)))
640 +)))|(% style="width:101px" %)(((
631 631  DI1TODO1
632 -)))|(% style="width:88px" %)(((
642 +)))|(% style="width:91px" %)(((
633 633  DI1TORO1
634 -)))|(% style="width:86px" %)(((
644 +)))|(% style="width:111px" %)(((
635 635  (((
636 636  RO2&
647 +)))
648 +
649 +(((
637 637  RO2 level
638 638  )))
639 -)))|(% style="width:92px" %)(((
652 +)))|(% style="width:105px" %)(((
640 640  DI2TODO2
641 -)))|(% style="width:92px" %)(((
654 +)))|(% style="width:106px" %)(((
642 642  DI2TORO2
643 643  )))
644 644  
... ... @@ -656,7 +656,7 @@
656 656  
657 657  (((
658 658  (((
659 -(% style="color:#037691" %)**The fourth byte**(%%)**:**  the high four bits are 1 to represent DOI1, and the low four bits are the level of DOI2 when the interrupt is triggered.
672 +(% style="color:#037691" %)**The fourth byte**(%%)**:**  the high four bits are 1 to represent DO1, and the low four bits are the level of DO1 when the interrupt is triggered.
660 660  )))
661 661  )))
662 662  

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