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Last modified by Mengting Qiu on 2025/06/04 18:42
From version 68.19
edited by Xiaoling
on 2022/05/25 15:28
Change comment: There is no comment for this version
To version 77.30
edited by Xiaoling
on 2022/06/10 08:41
Change comment: There is no comment for this version

Summary

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... ... @@ -11,12 +11,15 @@
11 11  
12 12  
13 13  
14 +
15 +
16 +
14 14  = 1.Introduction =
15 15  
16 16  == 1.1 What is LT Series I/O Controller ==
17 17  
18 18  (((
19 -The Dragino LT series I/O Modules are Long Range LoRaWAN I/O Controller. It contains different I/O Interfaces such as: analog current Input, analog voltage input, relay output, digital input and digital output etc. The LT I/O Modules are designed to simplify the installation of I/O monitoring.
22 +The Dragino (% style="color:blue" %)**LT series I/O Modules**(%%) are Long Range LoRaWAN I/O Controller. It contains different I/O Interfaces such as:** (% style="color:blue" %)analog current Input, analog voltage input(%%)**(% style="color:blue" %), **relay output**, **digital input**(%%) and (% style="color:blue" %)**digital output**(%%) etc. The LT I/O Modules are designed to simplify the installation of I/O monitoring.
20 20  )))
21 21  
22 22  (((
... ... @@ -24,7 +24,7 @@
24 24  )))
25 25  
26 26  (((
27 -The LT I/O Controllers is aiming to provide a simple plug and play, low cost installation by using LoRaWAN wireless technology.
30 +The LT I/O Controllers is aiming to provide an (% style="color:blue" %)**easy and low cost installation** (%%)by using LoRa wireless technology.
28 28  )))
29 29  
30 30  (((
... ... @@ -48,6 +48,8 @@
48 48  == 1.2  Specifications ==
49 49  
50 50  (((
54 +
55 +
51 51  **Hardware System:**
52 52  )))
53 53  
... ... @@ -70,6 +70,7 @@
70 70  )))
71 71  )))
72 72  
78 +
73 73  (((
74 74  **Interface for Model: LT22222-L:**
75 75  )))
... ... @@ -93,6 +93,7 @@
93 93  Power Input 7~~ 24V DC. 
94 94  )))
95 95  
102 +
96 96  (((
97 97  **LoRa Spec:**
98 98  )))
... ... @@ -157,6 +157,8 @@
157 157  
158 158  )))
159 159  
167 +
168 +
160 160  == 1.3 Features ==
161 161  
162 162  * LoRaWAN Class A & Class C protocol
... ... @@ -168,6 +168,7 @@
168 168  * Counting
169 169  
170 170  
180 +
171 171  == 1.4  Applications ==
172 172  
173 173  * Smart Buildings & Home Automation
... ... @@ -178,6 +178,7 @@
178 178  * Smart Factory
179 179  
180 180  
191 +
181 181  == 1.5 Hardware Variants ==
182 182  
183 183  (% border="1" style="background-color:#f7faff; width:500px" %)
... ... @@ -204,6 +204,7 @@
204 204  [[image:1653297104069-180.png]]
205 205  
206 206  
218 +
207 207  = 3. Operation Mode =
208 208  
209 209  == 3.1 How it works? ==
... ... @@ -218,6 +218,8 @@
218 218  
219 219  )))
220 220  
233 +
234 +
221 221  == 3.2 Example to join LoRaWAN network ==
222 222  
223 223  (((
... ... @@ -259,6 +259,7 @@
259 259  [[image:1653298044601-602.png||height="405" width="709"]]
260 260  
261 261  
276 +
262 262  == 3.3 Uplink Payload ==
263 263  
264 264  There are five working modes + one interrupt mode on LT for different type application:
... ... @@ -271,6 +271,7 @@
271 271  * **ADDMOD6**: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
272 272  
273 273  
289 +
274 274  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
275 275  
276 276  The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
... ... @@ -323,6 +323,7 @@
323 323  ** DO1 LED is off in both case
324 324  
325 325  
342 +
326 326  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
327 327  
328 328  **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
... ... @@ -416,6 +416,7 @@
416 416  )))
417 417  
418 418  
436 +
419 419  === 3.3.3 AT+MOD~=3, Single DI Counting + 2 x ACI ===
420 420  
421 421  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -460,6 +460,8 @@
460 460  
461 461  )))
462 462  
481 +
482 +
463 463  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
464 464  
465 465  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -541,6 +541,7 @@
541 541  )))
542 542  
543 543  
564 +
544 544  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
545 545  
546 546  **LT22222-L**: This mode the DI1 is used as a counting pin.
... ... @@ -585,6 +585,8 @@
585 585  
586 586  )))
587 587  
609 +
610 +
588 588  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
589 589  
590 590  (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
... ... @@ -611,6 +611,7 @@
611 611  
612 612  AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
613 613  
637 +
614 614  (% style="color:#4f81bd" %)**Trigger base on current**:
615 615  
616 616  Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
... ... @@ -619,6 +619,7 @@
619 619  
620 620  AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
621 621  
646 +
622 622  (% style="color:#4f81bd" %)**Trigger base on DI status**:
623 623  
624 624  DI status trigger Flag.
... ... @@ -706,6 +706,7 @@
706 706  When device got this command, it will send the MOD6 payload.
707 707  
708 708  
734 +
709 709  === 3.3.7 Payload Decoder ===
710 710  
711 711  (((
... ... @@ -714,6 +714,8 @@
714 714  
715 715  )))
716 716  
743 +
744 +
717 717  == 3.4 ​Configure LT via AT or Downlink ==
718 718  
719 719  User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
... ... @@ -722,16 +722,18 @@
722 722  There are two kinds of Commands:
723 723  )))
724 724  
725 -* (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.5.4, user can find what common commands it supports: http:~/~/wiki.dragino.com/index.php?title=End_Device_AT_Commands_and_Downlink_Commands
753 +* (% style="color:#4f81bd" %)**Common Commands**(%%): They should be available for each sensor, such as: change uplink interval, reset device. For firmware v1.5.4, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
726 726  
727 727  * (% style="color:#4f81bd" %)**Sensor Related Commands**(%%): These commands are special designed for LT-22222-L.  User can see these commands below:
728 728  
729 729  
758 +
730 730  === 3.4.1 Common Commands ===
731 731  
732 732  They should be available for each of Dragino Sensors, such as: change uplink interval, reset device. For firmware v1.5.4, user can find what common commands it supports: [[End Device AT Commands and Downlink Command>>doc:Main.End Device AT Commands and Downlink Command.WebHome]]
733 733  
734 734  
764 +
735 735  === 3.4.2 Sensor related commands ===
736 736  
737 737  ==== 3.4.2.1 Set Transmit Interval ====
... ... @@ -755,6 +755,7 @@
755 755  )))
756 756  
757 757  
788 +
758 758  ==== 3.4.2.2 Set Work Mode (AT+MOD) ====
759 759  
760 760  Set work mode.
... ... @@ -776,6 +776,7 @@
776 776  )))
777 777  
778 778  
810 +
779 779  ==== 3.4.2.3 Poll an uplink ====
780 780  
781 781  * AT Command:
... ... @@ -792,9 +792,10 @@
792 792  **Example**: 0x08FF, ask device to send an Uplink
793 793  
794 794  
827 +
795 795  ==== 3.4.2.4 Enable Trigger Mode ====
796 796  
797 -Use of trigger mode, please check [[ADDMOD6>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]
830 +Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
798 798  
799 799  * AT Command:
800 800  
... ... @@ -815,6 +815,7 @@
815 815  )))
816 816  
817 817  
851 +
818 818  ==== 3.4.2.5 Poll trigger settings ====
819 819  
820 820  Poll trigger settings,
... ... @@ -831,6 +831,7 @@
831 831  )))
832 832  
833 833  
868 +
834 834  ==== 3.4.2.6 Enable / Disable DI1/DI2/DI3 as trigger ====
835 835  
836 836  Enable Disable DI1/DI2/DI2 as trigger,
... ... @@ -854,6 +854,7 @@
854 854  )))
855 855  
856 856  
892 +
857 857  ==== 3.4.2.7 Trigger1 – Set DI1 or DI3 as trigger ====
858 858  
859 859  Set DI1 or DI3(for LT-33222-L) trigger.
... ... @@ -881,6 +881,7 @@
881 881  )))
882 882  
883 883  
920 +
884 884  ==== 3.4.2.8 Trigger2 – Set DI2 as trigger ====
885 885  
886 886  Set DI2 trigger.
... ... @@ -908,9 +908,10 @@
908 908  )))
909 909  
910 910  
948 +
911 911  ==== 3.4.2.9 Trigger – Set AC (current) as trigger ====
912 912  
913 -Set current trigger , base on AC port. See [[trigger mode>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]
951 +Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
914 914  
915 915  * AT Command:
916 916  
... ... @@ -923,19 +923,20 @@
923 923  
924 924  (% class="box infomessage" %)
925 925  (((
926 -**0x AA 01 aa bb cc dd ee ff gg hh ~/~/ same as AT+ACLIM See [[trigger mode>>url:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]**
964 +**0x AA 01 aa bb cc dd ee ff gg hh ~/~/ same as AT+ACLIM See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
927 927  )))
928 928  
929 929  
968 +
930 930  ==== 3.4.2.10 Trigger – Set AV (voltage) as trigger ====
931 931  
932 -Set current trigger , base on AV port. See [[trigger mode>>url:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]
971 +Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
933 933  
934 934  * AT Command:
935 935  
936 936  (% class="box infomessage" %)
937 937  (((
938 -**AT+AVLIM. See [[trigger mode>>url:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]]**
977 +**AT+AVLIM. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]**
939 939  )))
940 940  
941 941  * Downlink Payload (prefix 0xAA 00 ):
... ... @@ -942,10 +942,11 @@
942 942  
943 943  (% class="box infomessage" %)
944 944  (((
945 -**0x AA 00 aa bb cc dd ee ff gg hh ~/~/ same as AT+AVLIM See [[trigger mode>>url:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29]] **
984 +**0x AA 00 aa bb cc dd ee ff gg hh ~/~/ same as AT+AVLIM See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]] **
946 946  )))
947 947  
948 948  
988 +
949 949  ==== 3.4.2.11 Trigger – Set minimum interval ====
950 950  
951 951  Set AV and AC trigger minimum interval, system won’t response to the second trigger within this set time after the first trigger.
... ... @@ -965,6 +965,7 @@
965 965  )))
966 966  
967 967  
1008 +
968 968  ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
969 969  
970 970  * AT Command:
... ... @@ -997,6 +997,7 @@
997 997  )))
998 998  
999 999  
1041 +
1000 1000  ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
1001 1001  
1002 1002  * AT Command:
... ... @@ -1139,13 +1139,13 @@
1139 1139  
1140 1140  ==== 3.4.2.16 Counting ~-~- Voltage threshold counting ====
1141 1141  
1142 -When voltage exceed the threshold, count. Feature see [[MOD4>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting]]
1184 +When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
1143 1143  
1144 1144  * AT Command:
1145 1145  
1146 1146  (% class="box infomessage" %)
1147 1147  (((
1148 -**AT+VOLMAX    ~/~/ See [[MOD4>>path:http://8.211.40.43:8080/xwiki/bin/view/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/#H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting]]**
1190 +**AT+VOLMAX    ~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]**
1149 1149  )))
1150 1150  
1151 1151  * Downlink Payload (prefix 0xA5):
... ... @@ -1240,6 +1240,7 @@
1240 1240  
1241 1241  [[image:image-20220524094641-12.png||height="402" width="718"]]
1242 1242  
1285 +
1243 1243  **Step 3**: Create an account or log in Mydevices.
1244 1244  
1245 1245  **Step 4**: Search LT-22222-L(for both LT-22222-L / LT-33222-L) and add DevEUI.(% style="display:none" %)
... ... @@ -1286,50 +1286,103 @@
1286 1286  [[image:1653357170703-587.png]]
1287 1287  
1288 1288  (((
1332 +(((
1289 1289  When use need to connect a device to the DI port, both DI1+ and DI1- must be connected.
1290 1290  )))
1335 +)))
1291 1291  
1337 +(((
1338 +
1339 +)))
1292 1292  
1341 +(((
1293 1293  **Example1**: Connect to a Low active sensor.
1343 +)))
1294 1294  
1345 +(((
1295 1295  This type of sensor will output a low signal GND when active.
1347 +)))
1296 1296  
1297 -* Connect sensor’s output to DI1-
1298 -* Connect sensor’s VCC to DI1+.
1349 +* (((
1350 +Connect sensor’s output to DI1-
1351 +)))
1352 +* (((
1353 +Connect sensor’s VCC to DI1+.
1354 +)))
1299 1299  
1300 -So when sensor active, the current between NEC2501 pin1 and pin2 is： ​​
1356 +(((
1357 +So when sensor active, the current between NEC2501 pin1 and pin2 is：
1358 +)))
1301 1301  
1302 -[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]** [[image:image-20220524095628-8.png]] = DI1+ / 1K.**
1360 +(((
1361 +[[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1362 +)))
1303 1303  
1304 -If DI1+ = 12v, the //IF// = 12mA , So the LT-22222-L will be able to detect this active signal.
1364 +(((
1365 +If DI1+ = 12v, the [[image:1653968155772-850.png||height="23" width="19"]]= 12mA , So the LT-22222-L will be able to detect this active signal.
1366 +)))
1305 1305  
1368 +(((
1369 +
1370 +)))
1306 1306  
1372 +(((
1307 1307  **Example2**: Connect to a High active sensor.
1374 +)))
1308 1308  
1376 +(((
1309 1309  This type of sensor will output a high signal (example 24v) when active.
1378 +)))
1310 1310  
1311 -* Connect sensor’s output to DI1+
1312 -* Connect sensor’s GND DI1-.
1380 +* (((
1381 +Connect sensor’s output to DI1+
1382 +)))
1383 +* (((
1384 +Connect sensor’s GND DI1-.
1385 +)))
1313 1313  
1387 +(((
1314 1314  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1389 +)))
1315 1315  
1316 -[[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]** [[image:image-20220524095628-8.png]]= DI1+ / 1K.**
1391 +(((
1392 +[[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 1K.**
1393 +)))
1317 1317  
1318 -If **DI1+ = 24v**, the [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]]** = 24mA , So the LT-22222-L will be able to detect this high active signal.
1395 +(((
1396 +If **DI1+ = 24v**, the[[image:1653968155772-850.png||height="23" width="19"]] 24mA , So the LT-22222-L will be able to detect this high active signal.
1397 +)))
1319 1319  
1399 +(((
1400 +
1401 +)))
1320 1320  
1403 +(((
1321 1321  **Example3**: Connect to a 220v high active sensor.
1405 +)))
1322 1322  
1407 +(((
1323 1323  Assume user want to monitor an active signal higher than 220v, to make sure not burn the photocoupler  
1409 +)))
1324 1324  
1325 -* Connect sensor’s output to DI1+ with a serial 50K resistor
1326 -* Connect sensor’s GND DI1-.
1411 +* (((
1412 +Connect sensor’s output to DI1+ with a serial 50K resistor
1413 +)))
1414 +* (((
1415 +Connect sensor’s GND DI1-.
1416 +)))
1327 1327  
1418 +(((
1328 1328  So when sensor active, the current between NEC2501 pin1 and pin2 is:
1420 +)))
1329 1329  
1330 - [[image:/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LT-22222-L/WebHome/image-20220524095628-8.png?rev=1.1||alt="image-20220524095628-8.png"]]**[[image:image-20220524095628-8.png]] = DI1+ / 51K.**
1422 +(((
1423 + [[image:1653968155772-850.png||height="23" width="19"]]**= DI1+ / 51K.**
1424 +)))
1331 1331  
1332 -If sensor output is 220v, the (% id="cke_bm_243359S" style="display:none" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K.  = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
1426 +(((
1427 +If sensor output is 220v, the [[image:1653968155772-850.png||height="23" width="19"]](% id="cke_bm_243359S" style="display:none" %)[[image:image-20220524095628-8.png]](%%) = DI1+ / 51K.  = 4.3mA , So the LT-22222-L will be able to detect this high active signal safely.
1428 +)))
1333 1333  
1334 1334  
1335 1335  === 3.6.3 Digital Output Port: DO1/DO2 /DO3 ===
... ... @@ -1810,6 +1810,11 @@
1810 1810  (((
1811 1811  User can run AT+DEBUG command to see the counting event in serial. If firmware too old and doesn’t support AT+DEBUG. User can update to latest firmware first.
1812 1812  
1909 +
1910 +== 5.5 Can i use point to point communication for LT-22222-L? ==
1911 +
1912 +Yes, please refer [[Point to Point Communication>>doc:Main. Point to Point Communication of LT-22222-L.WebHome]]
1913 +
1813 1813  
1814 1814  )))
1815 1815  
... ... @@ -1824,10 +1824,8 @@
1824 1824  )))
1825 1825  
1826 1826  (((
1827 -Please see this link for how to debug:
1928 +Please see this link for how to debug: [[LoRaWAN Communication Debug>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H5.1Howitwork"]]
1828 1828  
1829 -[[http:~~/~~/wiki1.dragino.com/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/#H5.1Howitwork>>http://wiki1.dragino.com/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/#H5.1Howitwork]]
1830 -
1831 1831  
1832 1832  )))
1833 1833  
... ... @@ -1836,9 +1836,7 @@
1836 1836  )))
1837 1837  
1838 1838  (((
1839 -See this link for trouble shooting:
1840 -
1841 -[[http:~~/~~/wiki1.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/>>http://wiki1.dragino.com/xwiki/bin/view/Main/Firmware%20Upgrade%20Instruction%20for%20STM32%20base%20products/]]
1938 +See this link for trouble shooting: [[Firmware Upgrade Instruction>>doc:Main.Firmware Upgrade Instruction for STM32 base products.WebHome]]
1842 1842  )))
1843 1843  
1844 1844  (((
... ... @@ -1850,9 +1850,7 @@
1850 1850  )))
1851 1851  
1852 1852  (((
1853 -It might be about the channels mapping. Please see this link for detail:
1854 -
1855 -[[http:~~/~~/wiki1.dragino.com/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/#H2.NoticeofUS9152FCN4702FAU915Frequencyband>>http://wiki1.dragino.com/xwiki/bin/view/Main/LoRaWAN%20Communication%20Debug/#H2.NoticeofUS9152FCN4702FAU915Frequencyband]]
1950 +It might be about the channels mapping. [[Please see this link for detail>>doc:Main.LoRaWAN Communication Debug.WebHome||anchor="H2.NoticeofUS9152FCN4702FAU915Frequencyband"]]
1856 1856  )))
1857 1857  
1858 1858  (((
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