Changes for page LT-22222-L -- LoRa I/O Controller User Manual

Last modified by Mengting Qiu on 2025/06/04 18:42

From 77.79 to 77.80 From 82.13 to 82.14

From version 77.80

edited by Xiaoling
on 2022/06/10 09:25

Change comment: There is no comment for this version

To version 82.13

edited by Xiaoling
on 2022/06/20 11:46

Change comment: There is no comment for this version

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@@ -19,6 +19,8 @@
  == 1.1 What is LT Series I/O Controller ==
  (((
++
++
  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.
  )))
@@ -48,6 +48,7 @@
  )))
++
  == 1.2  Specifications ==
  (((
@@ -76,6 +76,8 @@
  )))
  (((
++
++
  **Interface for Model: LT22222-L:**
  )))
@@ -99,6 +99,8 @@
  )))
  (((
++
++
  **LoRa Spec:**
  )))
@@ -159,6 +159,8 @@
  * (((
  Packet engine up to 256 bytes with CRC.
++
++
  )))
@@ -172,6 +172,8 @@
  * Firmware upgradable via program port
  * Counting
++
++
  == 1.4  Applications ==
  * Smart Buildings & Home Automation
@@ -181,6 +181,8 @@
  * Smart Cities
  * Smart Factory
++
++
  == 1.5 Hardware Variants ==
  (% border="1" style="background-color:#f7faff; width:500px" %)
@@ -194,6 +194,7 @@
  * 1 x Counting Port
  )))
++
  = 2. Power ON Device =
  The LT controller can be powered by 7 ~~ 24V DC power source. Connect VIN to Power Input V+ and GND to power input V- to power the LT controller.
@@ -216,12 +216,9 @@
  (((
  In case user can’t set the OTAA keys in the network server and has to use the existing keys from server. User can [[use AT Command>>||anchor="H4.UseATCommand"]] to set the keys in the devices.
--
--
  )))
--
  == 3.2 Example to join LoRaWAN network ==
  (((
@@ -230,12 +230,13 @@
  [[image:image-20220523172350-1.png||height="266" width="864"]]
++
  (((
  The LG308 is already set to connect to [[TTN network >>url:https://www.thethingsnetwork.org/]]. So what we need to do now is only configure register this device to TTN:
  )))
  (((
--**Step 1**: Create a device in TTN with the OTAA keys from LT IO controller.
++(% style="color:blue" %)**Step 1**(%%): Create a device in TTN with the OTAA keys from LT IO controller.
  )))
  (((
@@ -244,6 +244,7 @@
  [[image:1653297924498-393.png]]
++
  Input these keys in the LoRaWAN Server portal. Below is TTN screen shot:
  Add APP EUI in the application.
@@ -257,7 +257,7 @@
  (((
--**Step 2**: Power on LT and it will auto join to the TTN network. After join success, it will start to upload message to TTN and user can see in the panel.
++(% style="color:blue" %)**Step 2**(%%): Power on LT and it will auto join to the TTN network. After join success, it will start to upload message to TTN and user can see in the panel.
  )))
  [[image:1653298044601-602.png||height="405" width="709"]]
@@ -275,6 +275,8 @@
  * **MOD5**: Single DI Counting + 2 x AVI + 1 x ACI + DO + RO
  * **ADDMOD6**: Trigger Mode, Optional, used together with MOD1 ~~ MOD5
++
++
  === 3.3.1 AT+MOD~=1, 2ACI+2AVI ===
  The uplink payload includes totally 9 bytes. Uplink packets use FPORT=2 and every 10 minutes send one uplink by default.
@@ -282,6 +282,8 @@
  [[image:image-20220523174024-3.png]]
  (((
++
++
  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
  )))
@@ -295,6 +295,7 @@
  For example if payload is: [[image:image-20220523175847-2.png]]
++
  **The value for the interface is:  **
  AVI1 channel voltage is 0x04AB/1000=1195（DEC）/1000=1.195V
@@ -325,8 +325,11 @@
  ** DO1 is high in case there is load between DO1 and V+.
  ** DO1 LED is off in both case
++
++
  === 3.3.2 AT+MOD~=2, (Double DI Counting) ===
++
  **For LT-22222-L**: this mode the **DI1 and DI2** are used as counting pins.
  (((
@@ -335,6 +335,7 @@
  [[image:image-20220523180452-3.png]]
++
  (((
  (% style="color:#4f81bd" %)**DIDORO**(%%) is a combination for RO1, RO2, DO3, DO2 and DO1. Totally 1bytes as below
  )))
@@ -350,6 +350,8 @@
  )))
  (((
++
++
  **To use counting mode, please run:**
  )))
@@ -357,17 +357,14 @@
  (((
  (((
  **AT+MOD=2**
--)))
--)))
--(% class="box infomessage" %)
--(((
--(((
  **ATZ**
  )))
  )))
  (((
++
++
  (% style="color:#4f81bd" %)**AT Commands for counting:**
  )))
@@ -379,40 +379,15 @@
  (((
  (((
  **AT+TRIG1=0,100 (set DI1 port to trigger on low level, valid signal is 100ms) **
--)))
--)))
--(% class="box infomessage" %)
--(((
--(((
  **AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms ) **
--)))
--)))
--(% class="box infomessage" %)
--(((
--(((
  **AT+TRIG2=0,100 (set DI2 port to trigger on low level, valid signal is 100ms) **
--)))
--)))
--(% class="box infomessage" %)
--(((
--(((
  **AT+TRIG2=1,100 (set DI2 port to trigger on high level, valid signal is 100ms ) **
--)))
--)))
--(% class="box infomessage" %)
--(((
--(((
  **AT+SETCNT=1,60   (Set COUNT1 value to 60)**
--)))
--)))
--(% class="box infomessage" %)
--(((
--(((
  **AT+SETCNT=2,60   (Set COUNT2 value to 60)**
  )))
  )))
@@ -447,12 +447,7 @@
  (((
  (((
  **AT+MOD=3**
--)))
--)))
--(% class="box infomessage" %)
--(((
--(((
  **ATZ**
  )))
  )))
@@ -459,8 +459,6 @@
  (((
  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
--
--
  )))
@@ -467,6 +467,7 @@
  === 3.3.4 AT+MOD~=4, Single DI Counting + 1 x Voltage Counting ===
++
  **LT22222-L**: This mode the DI1 is used as a counting pin.
  The AVI1 is also used for counting. AVI1 is used to monitor the voltage. It will check the voltage **every 60s**, if voltage is higher or lower than VOLMAX mV, the AVI1 Counting increase 1, so AVI1 counting can be used to measure a machine working hour.
@@ -473,6 +473,7 @@
  [[image:image-20220523181903-8.png]]
++
  (((
  (% style="color:#4f81bd" %)**DIDORO **(%%)is a combination for RO1, RO2, DI3, DI2, DI1, DO3, DO2 and DO1. Totally 1bytes as below
  )))
@@ -497,20 +497,13 @@
  (((
  (((
  **AT+MOD=4**
--)))
--)))
--(% class="box infomessage" %)
--(((
--(((
  **ATZ**
  )))
  )))
--(((
--
--)))
++
  (((
  Other AT Commands for counting are similar to [[MOD2 Counting Command>>||anchor="H3.3.2AT2BMOD3D22C28DoubleDICounting29"]].
  )))
@@ -524,35 +524,20 @@
  (% class="box infomessage" %)
  (((
  (((
--**AT+SETCNT=3,60   (set AVI Count to 60)**
--)))
--)))
++(% style="color:blue" %)**AT+SETCNT=3,60**(%%)**   (set AVI Count to 60)**
--(% class="box infomessage" %)
--(((
--(((
--**AT+VOLMAX=20000   (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
--)))
--)))
++(% style="color:blue" %)**AT+VOLMAX=20000**(%%)**   (If AVI1 voltage higher than VOLMAX (20000mV =20v), counter increase 1)**
--(% class="box infomessage" %)
--(((
--(((
--**AT+VOLMAX=20000,0   (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
--)))
--)))
++(% style="color:blue" %)**AT+VOLMAX=20000,0**(%%)**   (If AVI1 voltage lower than VOLMAX (20000mV =20v), counter increase 1)**
--(% class="box infomessage" %)
--(((
--(((
--**AT+VOLMAX=20000,1   (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
++(% style="color:blue" %)**AT+VOLMAX=20000,1**(%%)**   (If AVI1 voltage higer than VOLMAX (20000mV =20v), counter increase 1)**
  )))
  )))
--
  === 3.3.5 AT+MOD~=5, Single DI Counting + 2 x AVI + 1 x ACI ===
++
  **LT22222-L**: This mode the DI1 is used as a counting pin.
  [[image:image-20220523182334-9.png]]
@@ -583,12 +583,7 @@
  (((
  (((
  **AT+MOD=5**
--)))
--)))
--(% class="box infomessage" %)
--(((
--(((
  **ATZ**
  )))
  )))
@@ -601,6 +601,7 @@
  === 3.3.6 AT+ADDMOD~=6. (Trigger Mode, Optional) ===
++
  (% style="color:#4f81bd" %)**This mode is an optional mode for trigger purpose. It can run together with other mode.**
  For example, if user has configured below commands:
@@ -608,15 +608,13 @@
  * **AT+MOD=1 **  **~-~->** The normal working mode
  * **AT+ADDMOD6=1**   **~-~->** Enable trigger
--
  LT will keep monitoring AV1/AV2/AC1/AC2 every 5 seconds; LT will send uplink packets in two cases:
 . Periodically uplink (Base on TDC time). Payload is same as the normal MOD (MOD 1 for above command). This uplink uses LoRaWAN (% style="color:#4f81bd" %)**unconfirmed**(%%) data type
 . Trigger uplink when meet the trigger condition. LT will sent two packets in this case, the first uplink use payload specify in this mod (mod=6), the second packets use the normal mod payload(MOD=1 for above settings). Both Uplinks use LoRaWAN (% style="color:#4f81bd" %)**CONFIRMED data type.**
++(% style="color:#037691" %)**AT Command to set Trigger Condition**:
--**AT Command to set Trigger Condition**:
--
  (% style="color:#4f81bd" %)**Trigger base on voltage**:
  Format: AT+AVLIM=<AV1_LIMIT_LOW>,< AV1_LIMIT_HIGH>,<AV2_LIMIT_LOW>,< AV2_LIMIT_HIGH>
@@ -628,6 +628,7 @@
  AT+AVLIM=5000,0,0,0   (If AVI1 voltage lower than 5V , trigger uplink, 0 means ignore)
++
  (% style="color:#4f81bd" %)**Trigger base on current**:
  Format: AT+ACLIM=<AC1_LIMIT_LOW>,< AC1_LIMIT_HIGH>,<AC2_LIMIT_LOW>,< AC2_LIMIT_HIGH>
@@ -637,6 +637,7 @@
  AT+ACLIM=10000,15000,0,0   (If ACI1 voltage lower than 10mA or higher than 15mA, trigger an uplink)
++
  (% style="color:#4f81bd" %)**Trigger base on DI status**:
  DI status trigger Flag.
@@ -643,12 +643,13 @@
  Format: AT+DTRI=<DI1_TIRGGER_FlAG>,< DI2_TIRGGER_FlAG >
++
  **Example:**
  AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
--**Downlink Command to set Trigger Condition**
++(% style="color:#037691" %)**Downlink Command to set Trigger Condition:**
  Type Code: 0xAA. Downlink command same as AT Command **AT+AVLIM, AT+ACLIM**
@@ -677,6 +677,7 @@
  Same as AT+ DTRI =1,0  (Enable DI1 trigger / disable DI2 trigger)
++
  (% style="color:#4f81bd" %)**Trigger Settings Payload Explanation:**
  MOD6 Payload : total 11 bytes payload
@@ -690,7 +690,6 @@
  * Each bits shows if the corresponding trigger has been configured.
--
  **Example:**
  10100000: Means the system has configure to use the trigger: AC1_LOW and AV2_LOW
@@ -702,7 +702,6 @@
  * Each bits shows which status has been trigger on this uplink.
--
  **Example:**
  10000000: Means this packet is trigger by AC1_LOW. Means voltage too low.
@@ -714,7 +714,6 @@
  * Each bits shows which status has been trigger on this uplink.
--
  **Example:**
  00000111: Means both DI1 and DI2 trigger are enabled and this packet is trigger by DI1.
@@ -735,6 +735,8 @@
  === 3.3.7 Payload Decoder ===
  (((
++
++
  **Decoder for TTN/loraserver/ChirpStack**: [[http:~~/~~/www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/Payload_decoder/>>url:http://www.dragino.com/downloads/index.php?dir=LT_LoRa_IO_Controller/LT33222-L/Payload_decoder/]]
@@ -741,7 +741,6 @@
  )))
--
  == 3.4 Configure LT via AT or Downlink ==
  User can configure LT I/O Controller via AT Commands or LoRaWAN Downlink Commands
@@ -768,7 +768,7 @@
  Set device uplink interval.
--* AT Command:
++* (% style="color:#037691" %)**AT Command:**
  (% class="box infomessage" %)
  (((
@@ -778,7 +778,7 @@
  **Example: **AT+TDC=30000. Means set interval to 30 seconds
--* Downlink Payload (prefix 0x01):
++* (% style="color:#037691" %)**Downlink Payload (prefix 0x01):**
  (% class="box infomessage" %)
  (((
@@ -791,7 +791,7 @@
  Set work mode.
--* AT Command:
++* (% style="color:#037691" %)**AT Command:**
  (% class="box infomessage" %)
  (((
@@ -801,7 +801,7 @@
  **Example**: AT+MOD=2. Set work mode to Double DI counting mode
--* Downlink Payload (prefix 0x0A):
++* (% style="color:#037691" %)**Downlink Payload (prefix 0x0A):**
  (% class="box infomessage" %)
  (((
@@ -812,12 +812,12 @@
  ==== 3.4.2.3 Poll an uplink ====
--* AT Command:
++* (% style="color:#037691" %)AT Command:
  There is no AT Command to poll uplink
--* Downlink Payload (prefix 0x08):
++* (% style="color:#037691" %)Downlink Payload (prefix 0x08):
  (% class="box infomessage" %)
  (((
@@ -832,7 +832,7 @@
  Use of trigger mode, please check [[ADDMOD6>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
--* AT Command:
++* (% style="color:#037691" %)AT Command:
  (% class="box infomessage" %)
  (((
@@ -844,7 +844,7 @@
 : Disable Trigger Mode
--* Downlink Payload (prefix 0x0A 06):
++* (% style="color:#037691" %)Downlink Payload (prefix 0x0A 06):
  (% class="box infomessage" %)
  (((
@@ -857,12 +857,12 @@
  Poll trigger settings,
--* AT Command:
++* (% style="color:#037691" %)AT Command:
  There is no AT Command for this feature.
--* Downlink Payload (prefix 0x AB 06):
++* (% style="color:#037691" %)Downlink Payload (prefix 0x AB 06):
  (% class="box infomessage" %)
  (((
@@ -875,7 +875,7 @@
  Enable Disable DI1/DI2/DI2 as trigger,
--* AT Command:
++* (% style="color:#037691" %)AT Command:
  (% class="box infomessage" %)
  (((
@@ -887,7 +887,7 @@
  AT+ DTRI =1,0   (Enable DI1 trigger / disable DI2 trigger)
--* Downlink Payload (prefix 0xAA 02):
++* (% style="color:#037691" %)Downlink Payload (prefix 0xAA 02):
  (% class="box infomessage" %)
  (((
@@ -900,7 +900,7 @@
  Set DI1 or DI3(for LT-33222-L) trigger.
--* AT Command:
++* (% style="color:#037691" %)AT Command:
  (% class="box infomessage" %)
  (((
@@ -917,7 +917,7 @@
  AT+TRIG1=1,100(set DI1 port to trigger on high level, valid signal is 100ms )
--* Downlink Payload (prefix 0x09 01 ):
++* (% style="color:#037691" %)Downlink Payload (prefix 0x09 01 ):
  (% class="box infomessage" %)
  (((
@@ -930,7 +930,7 @@
  Set DI2 trigger.
--* AT Command:
++* (% style="color:#037691" %)AT Command:
  (% class="box infomessage" %)
  (((
@@ -947,7 +947,7 @@
  AT+TRIG2=0,100(set DI1 port to trigger on low level, valid signal is 100ms )
--* Downlink Payload (prefix 0x09 02 ):
++* (% style="color:#037691" %)Downlink Payload (prefix 0x09 02 ):
  (% class="box infomessage" %)
  (((
@@ -960,7 +960,7 @@
  Set current trigger , base on AC port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
--* AT Command:
++* (% style="color:#037691" %)AT Command:
  (% class="box infomessage" %)
  (((
@@ -968,7 +968,7 @@
  )))
--* Downlink Payload (prefix 0xAA 01 ):
++* (% style="color:#037691" %)Downlink Payload (prefix 0xAA 01 ):
  (% class="box infomessage" %)
  (((
@@ -981,7 +981,7 @@
  Set current trigger , base on AV port. See [[trigger mode>>||anchor="H3.3.6AT2BADDMOD3D6.28TriggerMode2COptional29"]]
--* AT Command:
++* (% style="color:#037691" %)AT Command:
  (% class="box infomessage" %)
  (((
@@ -989,7 +989,7 @@
  )))
--* Downlink Payload (prefix 0xAA 00 ):
++* (% style="color:#037691" %)Downlink Payload (prefix 0xAA 00 ):
  (% class="box infomessage" %)
  (((
@@ -1002,7 +1002,7 @@
  Set AV and AC trigger minimum interval, system won’t response to the second trigger within this set time after the first trigger.
--* AT Command:
++* (% style="color:#037691" %)AT Command:
  (% class="box infomessage" %)
  (((
@@ -1010,7 +1010,7 @@
  )))
--* Downlink Payload (prefix 0xAC ):
++* (% style="color:#037691" %)Downlink Payload (prefix 0xAC ):
  (% class="box infomessage" %)
  (((
@@ -1021,12 +1021,12 @@
  ==== 3.4.2.12 DO ~-~- Control Digital Output DO1/DO2/DO3 ====
--* AT Command:
++* (% style="color:#037691" %)AT Command:
  There is no AT Command to control Digital Output
--* Downlink Payload (prefix 0x02):
++* (% style="color:#037691" %)Downlink Payload (prefix 0x02):
  (% class="box infomessage" %)
  (((
@@ -1055,12 +1055,12 @@
  ==== 3.4.2.13 DO ~-~- Control Digital Output DO1/DO2/DO3 with time control ====
--* AT Command:
++* (% style="color:#037691" %)AT Command:
  There is no AT Command to control Digital Output
--* Downlink Payload (prefix 0xA9):
++* (% style="color:#037691" %)Downlink Payload (prefix 0xA9):
  (% class="box infomessage" %)
  (((
@@ -1124,12 +1124,12 @@
  ==== 3.4.2.14 Relay ~-~- Control Relay Output RO1/RO2 ====
--* AT Command:
++* (% style="color:#037691" %)AT Command:
  There is no AT Command to control Relay Output
--* Downlink Payload (prefix 0x03):
++* (% style="color:#037691" %)Downlink Payload (prefix 0x03):
  (% class="box infomessage" %)
  (((
@@ -1154,12 +1154,12 @@
  ==== 3.4.2.15 Relay ~-~- Control Relay Output RO1/RO2 with time control ====
--* AT Command:
++* (% style="color:#037691" %)AT Command:
  There is no AT Command to control Relay Output
--* Downlink Payload (prefix 0x05):
++* (% style="color:#037691" %)Downlink Payload (prefix 0x05):
  (% class="box infomessage" %)
  (((
@@ -1211,31 +1211,22 @@
  When voltage exceed the threshold, count. Feature see [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
--* AT Command:
++* (% style="color:#037691" %)**AT Command:**
--(% class="box infomessage" %)
--(((
--**AT+VOLMAX    ~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]**
--)))
++(% style="color:#037691" %)****(%%)**AT+VOLMAX   ** ~/~/ See [[MOD4>>||anchor="H3.3.4AT2BMOD3D42CSingleDICounting2B1xVoltageCounting"]]
--* Downlink Payload (prefix 0xA5):
++* (% style="color:#037691" %)**Downlink Payload (prefix 0xA5):**
--(% class="box infomessage" %)
--(((
--**0xA5 aa bb cc   ~/~/ Same as AT+VOLMAX=(aa bb),cc**
--)))
++**0xA5 aa bb cc   **~/~/ Same as AT+VOLMAX=(aa bb),cc
  ==== 3.4.2.17 Counting ~-~- Pre-configure the Count Number ====
--* AT Command:
++* (% style="color:#037691" %)**AT Command:**
--(% class="box infomessage" %)
--(((
--**AT+SETCNT=aa,(bb cc dd ee) **
--)))
++(% style="color:#037691" %)****(%%)**AT+SETCNT=aa,(bb cc dd ee) **
  aa: 1: Set count1,
@@ -1246,12 +1246,9 @@
  Bb cc dd ee: number to be set
--* Downlink Payload (prefix 0xA8):
++* (% style="color:#037691" %)**Downlink Payload (prefix 0xA8):**
--(% class="box infomessage" %)
--(((
--**0x A8 aa bb cc dd ee     ~/~/ same as AT+SETCNT=aa,(bb cc dd ee)**
--)))
++**0x A8 aa bb cc dd ee     **~/~/ same as AT+SETCNT=aa,(bb cc dd ee)
@@ -1259,38 +1259,28 @@
  Clear counting for counting mode
--* AT Command:
++* (% style="color:#037691" %)**AT Command:**
--(% class="box infomessage" %)
--(((
--**AT+CLRCOUNT  ~/~/ clear all counting**
--)))
++(% style="color:#037691" %)(%%)**AT+CLRCOUNT ** ~/~/ clear all counting
--* Downlink Payload (prefix 0xA6):
--(% class="box infomessage" %)
--(((
--**0x A6 01     ~/~/ clear all counting,**
--)))
++* (% style="color:#037691" %)**Downlink Payload (prefix 0xA6):**
++**0x A6 01    ** ~/~/ clear all counting
++
  ==== 3.4.2.19 Counting ~-~- Change counting mode save time ====
--* AT Command:
++* (% style="color:#037691" %)**AT Command:**
--(% class="box infomessage" %)
--(((
--**AT+COUTIME=60  ~/~/ Set save time to 60 seconds. Device will save the counting result in internal flash every 60 seconds. (min value: 30)**
--)))
++**AT+COUTIME=60  **~/~/ Set save time to 60 seconds. Device will save the counting result in internal flash every 60 seconds. (min value: 30)
--* Downlink Payload (prefix 0xA7):
--(% class="box infomessage" %)
--(((
--**0x A7 aa bb cc     ~/~/ same as AT+COUTIME =aa bb cc,**
--)))
++* (% style="color:#037691" %)**Downlink Payload (prefix 0xA7):**
++**0x A7 aa bb cc     **~/~/ same as AT+COUTIME =aa bb cc,
++
  (((
  range: aa bb cc:0 to 16777215,  (unit:second)
@@ -1987,8 +1987,16 @@
  )))
  (((
--
++== 5.6 Why does the relay output become the default and open relay after the lt22222 is powered off? ==
++If the device is not shut down, but directly powered off.
++
++It will default that this is a power-off state.
++
++In modes 2 to 5, DO RO status and pulse count are saved in flash.
++
++After restart, the status before power failure will be read from flash.
++
  = 6. Trouble Shooting =
  )))