Dear Roger,

1.One DT85GM to Measurement 14 Resistance , 8 Voltage , 1 Current , 4 Current Bridge.FTP data via ethernet.
2.Trigger in every 5 minutes.
3.Everything is normal.

When I add one CEM20 and move 4 original Current Bridge to CEM20.The DT85GM will Low Power forced sleep.
How can I solve it?

Hi Hsuyihao,

dataTaker enters force sleep whenever it detects that (in your case) external power is critically low.
Additional CEM adds 900 mW (350 mW + 550 mW) to your system.
It may because additional CEM or power deficit.

Do you have power calculation for your system?
If not, could you tell me a few things:

• What is your transmission interval?
• What is your battery size?
• Do you use a charging system (main or solar) to charge your battery?
• I need clarification whether you send the data over the Ethernet or you use the modem or you use both?
• Do you enable sleep mode?
• Do you cut off modem power after transmission (through dEX) or the modem stays idle?
• When you said everything is normal, how long the system has been running?

If I assumed that your transmission interval is the same as your reading and you used the modem (because I saw the picture that modem is starting) + Ethernet then

On event error, there is force sleep at 03:20:00 (the same time as your transmission).
Roughly speaking, your modem draws 2500 mW, Ethernet 500 mW, 27 sensors 90 mW, (CEM 350 mW + 12 V Output 550 mW).

Could you show me your code?

Best regards,
Rudy Gunawan

Hi Rudy,

- What is your transmission interval?

5 minutes.The same as my reading.

- What is your battery size?

Parallel connection two battery(12V 7.2AH and 12V 7AH).

- Do you use a charging system (main or solar) to charge your battery?

Yes, main.

- I need clarification whether you send the data over the Ethernet or you use the modem or you use both?

Ethernet.

- Do you enable sleep mode?

Yes,P15=0.

- Do you cut off modem power after transmission (through dEX) or the modem stays idle?

No,please tell me how to properly set the modem.

- When you said everything is normal, how long the system has been running?

More than six months.

-Code- (I use dEX to do all this.)

PROFILE COMMAND_SERVER PORT="7700"
PROFILE DISPLAY AUTOACK_DELAY="0S"
PROFILE DISPLAY AUTOSCROLL_DELAY="30S"
PROFILE DISPLAY AUTOSCROLL_INTERVAL="0S"
PROFILE ETHERNET ENABLE="YES"
PROFILE ETHERNET GATEWAY="192.168.1.254"
PROFILE ETHERNET IP_ADDRESS="192.168.1.51"
PROFILE ETHERNET SUBNET_MASK="255.255.255.0"
PROFILE ETHERNET_SESSION RETRY_DELAY_S="30"
PROFILE ETHERNET_SESSION RETURN_ADDRESS=""
PROFILE ETHERNET_SESSION SENDER_NAME=""
PROFILE ETHERNET_SESSION SMTP_ACCOUNT=""
PROFILE ETHERNET_SESSION SMTP_PASSWORD=""
PROFILE ETHERNET_SESSION SMTP_SERVER=""
PROFILE FTP_SERVER ALLOW_ANONYMOUS="YES"
PROFILE FTP_SERVER PASSWORD="DATATAKER"
PROFILE FTP_SERVER PORT="21"
PROFILE FTP_SERVER USER="DATATAKER"
PROFILE FUNCTION F10_COMMAND="PROFILE ETHERNET ENABLE=YES; PROFILE ETHERNET IP_ADDRESS=0.0.0.0; PROFILE ETHERNET IP_ADDRESS=AUTO"
PROFILE FUNCTION F10_LABEL="Auto Ethernet IP"
PROFILE FUNCTION F1_COMMAND="H"
PROFILE FUNCTION F1_LABEL="Halt all schedul"
PROFILE FUNCTION F2_COMMAND="G"
PROFILE FUNCTION F2_LABEL="Resume all sched"
PROFILE FUNCTION F3_COMMAND=""
PROFILE FUNCTION F3_LABEL=""
PROFILE FUNCTION F4_COMMAND=""
PROFILE FUNCTION F4_LABEL=""
PROFILE FUNCTION F5_COMMAND="SESSION START"
PROFILE FUNCTION F5_LABEL="Start comms"
PROFILE FUNCTION F6_COMMAND="SESSION STOP"
PROFILE FUNCTION F6_LABEL="Stop comms"
PROFILE FUNCTION F7_COMMAND="SESSION SIGNAL"
PROFILE FUNCTION F7_LABEL="Check signal"
PROFILE FUNCTION F8_COMMAND="REMOVEMEDIA"
PROFILE FUNCTION F8_LABEL="Remove USB"
PROFILE FUNCTION F9_COMMAND="COPYD dest=a: format=csv archive=y src=BD"
PROFILE FUNCTION F9_LABEL="Copy logged data"
PROFILE LOCALE TIME_ZONE="28800"
PROFILE MODBUS_SERVER HOST_ADDRESS="0"
PROFILE MODBUS_SERVER SERSEN_ADDRESS="0"
PROFILE MODBUS_SERVER TCPIP_PORT="502"
PROFILE MODBUS_SERVER USB_ADDRESS="0"
PROFILE MODEM 3G_BANDS="19"
PROFILE MODEM APN=""
PROFILE MODEM APN_ACCOUNT=""
PROFILE MODEM APN_PASSWORD="**"
PROFILE MODEM GSM_BANDS="7"
PROFILE MODEM MIN_SIGNAL_FOR_DATA_DBM="-93"
PROFILE MODEM PIN=""
PROFILE MODEM PIN_WAIT_S="120"
PROFILE MODEM REGISTRATION_WAIT_S="60"
PROFILE MODEM SERVICE="AUTO"
PROFILE MODEM SMS_ONLY="NO"
PROFILE MODEM_SESSION DDNS_ACCOUNT=""
PROFILE MODEM_SESSION DDNS_ENABLE="NO"
PROFILE MODEM_SESSION DDNS_HOST_NAME=""
PROFILE MODEM_SESSION DDNS_PASSWORD=""
PROFILE MODEM_SESSION DDNS_SERVER_PORT="80"
PROFILE MODEM_SESSION DDNS_SERVER_URI="members.dyndns.org/nic/update"
PROFILE MODEM_SESSION MAX_DURATION_S="0"
PROFILE MODEM_SESSION MIN_DURATION_S="0"
PROFILE MODEM_SESSION MIN_IDLE_S="120"
PROFILE MODEM_SESSION NETWORK_CHECK="DNS"
PROFILE MODEM_SESSION PING_SERVERS=""
PROFILE MODEM_SESSION RETRY_DELAY_S="20"
PROFILE MODEM_SESSION RETURN_ADDRESS=""
PROFILE MODEM_SESSION SENDER_NAME=""
PROFILE MODEM_SESSION SMTP_ACCOUNT=""
PROFILE MODEM_SESSION SMTP_PASSWORD=""
PROFILE MODEM_SESSION SMTP_SERVER=""
PROFILE MODEM_SESSION START_CRON="0:0:12:::"
PROFILE MODEM_SESSION STOP_CRON="0:0:13:::"
PROFILE MODEM_SESSION TIMING_CONTROL="OFF"
PROFILE NETWORK DNS_SERVER_1="168.95.1.1"
PROFILE NETWORK DNS_SERVER_2="0.0.0.0"
PROFILE NTP BACKGROUND_ENABLE="YES"
PROFILE NTP BACKGROUND_PERIOD="86400S"
PROFILE NTP BACKGROUND_WAKEUP_DELAY="3S"
PROFILE NTP MAX_JUMP_CORRECTION="24H"
PROFILE NTP MAX_SLEW_CORRECTION="1800T"
PROFILE NTP MIN_CORRECTION="0T"
PROFILE NTP SERVER="time.stdtime.gov.tw"
PROFILE NTP SLEW_RATE="10"
PROFILE NTP TIMEOUT="200T"
PROFILE PARAMETERS P0="3"
PROFILE PARAMETERS P11="50"
PROFILE PARAMETERS P14="600"
PROFILE PARAMETERS P15="0"
PROFILE PARAMETERS P16="0"
PROFILE PARAMETERS P17="30"
PROFILE PARAMETERS P20="2"
PROFILE PARAMETERS P21="0"
PROFILE PARAMETERS P22="32"
PROFILE PARAMETERS P24="13"
PROFILE PARAMETERS P26="60"
PROFILE PARAMETERS P27="0"
PROFILE PARAMETERS P28="0"
PROFILE PARAMETERS P3="1500"
PROFILE PARAMETERS P31="1"
PROFILE PARAMETERS P32="8"
PROFILE PARAMETERS P33="0"
PROFILE PARAMETERS P36="0"
PROFILE PARAMETERS P38="46"
PROFILE PARAMETERS P39="0"
PROFILE PARAMETERS P4="800"
PROFILE PARAMETERS P40="58"
PROFILE PARAMETERS P41="3"
PROFILE PARAMETERS P50="0"
PROFILE PARAMETERS P51="6"
PROFILE PARAMETERS P53="10"
PROFILE PARAMETERS P55="16383"
PROFILE PARAMETERS P56="0"
PROFILE PARAMETERS P62="0"
PROFILE PARAMETERS P8="0"
PROFILE PARAMETERS P9="1"
PROFILE PPP PASSWORD="DATATAKER"
PROFILE PPP USER="DATATAKER"
PROFILE SERSEN_PORT BPS="1200"
PROFILE SERSEN_PORT DATA_BITS="8"
PROFILE SERSEN_PORT FLOW="NONE"
PROFILE SERSEN_PORT FUNCTION="SERIAL"
PROFILE SERSEN_PORT MODE="RS232"
PROFILE SERSEN_PORT PARITY="NONE"
PROFILE SERSEN_PORT STOP_BITS="1"
PROFILE STARTUP MAINTAIN_OUTPUTS="NO"
PROFILE STARTUP RUN="CURRENT_JOB"
PROFILE SWITCHES C="ON"
PROFILE SWITCHES D="OFF"
PROFILE SWITCHES E="ON"
PROFILE SWITCHES F="OFF"
PROFILE SWITCHES H="OFF"
PROFILE SWITCHES I="OFF"
PROFILE SWITCHES K="ON"
PROFILE SWITCHES L="OFF"
PROFILE SWITCHES M="ON"
PROFILE SWITCHES N="ON"
PROFILE SWITCHES R="ON"
PROFILE SWITCHES S="ON"
PROFILE SWITCHES T="OFF"
PROFILE SWITCHES U="ON"
PROFILE SWITCHES W="OFF"
PROFILE SWITCHES X="OFF"
PROFILE SWITCHES Z="ON"
PROFILE UNLOAD FTP_RETRIES="10"
PROFILE USB_PORT FUNCTION="COMMAND"
PROFILE USER SITE="DT85GM-BT"

BEGIN"config"
' Generated by dEX Configuration Builder Version 1.29.1924 (Firmware Version 9.08.3932)
' Target device: DT85GLM3-3
password=""

Y4=0,1.04,0,0,0,0
S1=0,100,0,1000
S2=-10,10,500,4500
S3=0,30,4,20
RS1S
RA"Schedule_1"("b:",ALARMS:OV:100KB:W60,DATA:OV:1MB)5M
LOGONA
12R(I,2W,"WS1~MM",LM,S1,NA,0)
12+R(I,2W,"WS2~MM",LM,S1,NA,0)
12-R(I,2W,"WS3~MM",LM,S1,NA,0)
2R(I,2W,"WS4~MM",LM,S1,NA,0)
2+R(I,2W,"WS5~MM",LM,S1,NA,0)
2-R(I,2W,"WS6~MM",LM,S1,NA,0)
3R(I,2W,"WS7~MM",LM,S1,NA,0)
3+R(I,2W,"WS8~MM",LM,S1,NA,0)
3-R(I,2W,"WS9~MM",LM,S1,NA,0)
4R(I,2W,"WS10~MM",LM,S1,NA,0)
4+R(I,2W,"WS11~MM",LM,S1,NA,0)
4-R(I,2W,"WS12~MM",LM,S1,NA,0)
5*R(I,2W,"WS13~MM",LM,S1,NA,0)
5+R(I,2W,"WS14~MM",LM,S1,NA,0)

' User defined
PWR5V=1

DELAY("Delay_1",W)=5000
6+V("TI_X_1~DEG",LM,S2,NA)
6-V("TI_Y_1~DEG",LM,S2,NA)
7+V("TI_X_2~DEG",LM,S2,NA)
7-V("TI_Y_2~DEG",LM,S2,NA)
8+V("TI_X_3~DEG",LM,S2,NA)
8-V("TI_Y_3~DEG",LM,S2,NA)
9+V("TI_X_4~DEG",LM,S2,NA)
9-V("TI_Y_4~DEG",LM,S2,NA)

' User defined
PWR5V=0

10*I(N,"WL1_R~M",LM,S3,NA,100)
11BGI(II,3W,"SG1~ppm",LM,Y4,NA,350)
13BGI(II,3W,"CurrentBridge_1~ppm",LM,NA,350)
14BGI(II,3W,"CurrentBridge_2~ppm",LM,NA,350)
15BGI(II,3W,"CurrentBridge_3~ppm",LM,NA,350)
16BGI(II,3W,"CurrentBridge_4~ppm",LM,NA,350)
DO{copyd dest="ftp://admin:swcb@192.168.1.49:21/hu%20phone/hu%20phone.csv?interface=ETHERNET&priority=NORMAL" format=CSV sched=A data=Y alarms=N}
END

Thanks

Maybe is not the cause of your problem, but so far as I know the parallel connection of batteries is a discouraged practise (especially if the batteries are non exactly the same as you wrote). Your battery charger can reach it's maximum output current if battery are damaged, and with parallel connection I'm expecting a very short life time...

You can do a simple test disconnecting each battery alternately and see if the problem is battery related.
Good luck.

Hi Hsuyihao,

I would like to give some comments based on your answer:

• Your code seems OK, and I saw that the modem is OFF. PROFILE MODEM_SESSION TIMING_CONTROL="OFF"
• The modem will ON only when you start it through Function key. PROFILE FUNCTION F5_COMMAND="SESSION START" PROFILE FUNCTION F5_LABEL="Start comms
• Sleep mode P15=0 will not work when dataTaker is externally powered or Ethernet is connected. To get dataTaker to sleep at that condition you may need to set P15=3

However since you charge your batteries using main power, you need no worries for the above power consumption.
I am more worried about your charging system and batteries.

Could you please check your battery voltage?
The battery charger output voltage is based from battery voltage level.

Teo is right.

Since you mixed different size of battery (7 Ah and 7.2 Ah), maybe different types of batteries (chemical, manufacturer), possibility different ages and have been running for 6 months, there is a possibility both batteries have been damaged and cannot supply a reference voltage for your charger.

Could you make parallel connection from dataTaker power input to dataTaker terminal to monitor the voltage as well?
So you may cross check the voltage reading time stamp with your force sleep time stamp.
How long have you been connecting this CEM until you found this problem?

Last thing, I saw your session failed from the picture, do you know the reason?

Best regards,
Rudy Gunawan

Hi Rudy,

I tried different way to solve power supply.But It won't work.

I don't know how long have been connecting this CEM until found this problem.

The reason why the session failed is because I don't turn off the modem in the beginning.

Hi Hsuyihao,

For simple diagnostic whether your power supply is OK or not,
could you tell me the output voltage from your battery charger (or the input voltage to your dataTaker) specially when transmitting the data and CEM is connected?

Thanks,
Rudy Gunawan

You can consider the option of setting up a schedule that logs every few seconds the voltage of the power supply and batteries. In this case logger won't sleep.
Have a nice day.

Hi teo,

It is more likely power problem.
The code shows P15=0, which means the logger won't sleep if externally powered.

Low power force sleep is a matter of input voltage which become critically low.
The problem could be the battery charger or the batteries.
It is good idea to monitor the input voltage so we can monitor what is the voltage level when the logger enter forced sleep mode.

Best regards,
Rudy Gunawan

Hi Rudy,
yes, I missed the P15 settings...