I am trying to configure a Nokia 30 attached to a VRM168 to monitor sensors in one of our field equipment. I have already been successful in configuring a digital input (I used input 1 for this) and subscribing to changes in state (from ON to OFF and vice versa). However, I am having trouble in setting up input # 2 to accept analog input from a temperature sensor.
Here is some background information which may be of help:
I am using Nokia 30 in User Control Mode. I have configured it using Nokia Configurator Software for input # 2 to be analog + alarming with a upper threshold of 2000 and lower threshold of 400 and frequency set at 1.
My temp sensors max Voltage reading is 6V with a low of 0V. I have connected temp sensor according to configuration as described in the "Single ended mode with 10V signal" section of the VRM168 manual:
--> pin 12 of VRM168 to positive (+) signal
--> pin 10 of VRM168 to common ground
--> pin 13 of VRM168 unconnected
I have successfully queried analog input using the SMS command "Get_Input ALL". At max temparature (6V) I get a reading of around 3500 while at coldest temparture (0V) I get a reading of 0.
However, when I send the SMS command "Get_Change_Input ALL" I get the following message:
INPUT 1: OK
INPUT 2: CHECK CONFIG
INPUT 3: CHECK CONFIG
Note that input # 1 is connected to a digital signal source, input # 2 is the analog input in question, and input # 3 is unconnected.
Even though I very temperature sensor past its configured thresholds, I get no SMS from N30...
Can you please tell me what I am doing wrong?