We are experiencing some unwanted "spikes" or "outliers" in out analog measurements, done by the AIO card.
I have attached 4 images showing the same time interval of the 4 analog inputs, where there suddenly appears a spike in the data. There is no way the sensor registered this, and all the 4 sensors are 100% galvanically isolated. In spite of this the peaks appear at exactly the same time. The interval between these spikes is varying, but it happens a 5-10 times an hour roughly.
This is the config we are running with:
Code: Select all
{
"Devices": [
{
"GUID": "4d23a4c0-83b1-04d0-8bcd-be26cf3eefbc",
"id": "device_RevPiCore_20170404_1_2_001",
"type": "BASE",
"productType": "95",
"position": "0",
"name": "RevPi Core V1.2",
"bmk": "RevPi Core V1.2",
"inpVariant": 0,
"outVariant": 0,
"comment": "This is a RevPiCore Device",
"offset": 0,
"inp": {
"0": ["RevPiStatus", "0", "8", "0", true, "0000", "", ""],
"1": ["RevPiIOCycle", "0", "8", "1", true, "0001", "", ""],
"2": ["RS485ErrorCnt", "0", "16", "2", false, "0002", "", ""],
"3": ["Core_Temperature", "0", "8", "4", false, "0003", "", ""],
"4": ["Core_Frequency", "0", "8", "5", false, "0004", "", ""]
},
"out": {
"0": ["RevPiLED", "0", "8", "6", true, "0005", "", ""],
"1": ["RS485ErrorLimit1", "10", "16", "7", false, "0006", "", ""],
"2": ["RS485ErrorLimit2", "1000", "16", "9", false, "0007", "", ""]
},
"mem": {},
"extend": {}
},
{
"GUID": "115fc481-86a5-a7c2-9377-0dccb3ea2718",
"id": "device_RevPiAIO_20170301_1_0_001",
"type": "LEFT_RIGHT",
"productType": "103",
"position": "32",
"name": "RevPi AIO",
"bmk": "RevPi AIO",
"inpVariant": 0,
"outVariant": 0,
"comment": "",
"offset": 11,
"inp": {
"0": ["InputValue_1", "0", "16", "0", false, "0000", "", ""],
"1": ["InputValue_2", "0", "16", "2", false, "0001", "", ""],
"2": ["InputValue_3", "0", "16", "4", false, "0002", "", ""],
"3": ["InputValue_4", "0", "16", "6", false, "0003", "", ""],
"4": ["InputStatus_1", "0", "8", "8", false, "0004", "", ""],
"5": ["InputStatus_2", "0", "8", "9", false, "0005", "", ""],
"6": ["InputStatus_3", "0", "8", "10", false, "0006", "", ""],
"7": ["InputStatus_4", "0", "8", "11", false, "0007", "", ""],
"8": ["RTDValue_1", "0", "16", "12", false, "0008", "", ""],
"9": ["RTDValue_2", "0", "16", "14", false, "0009", "", ""],
"10": ["RTDStatus_1", "0", "8", "16", false, "0010", "", ""],
"11": ["RTDStatus_2", "0", "8", "17", false, "0011", "", ""],
"12": ["OutputStatus_1", "0", "8", "18", false, "0012", "", ""],
"13": ["OutputStatus_2", "0", "8", "19", false, "0013", "", ""]
},
"out": {
"0": ["OutputValue_1", "0", "16", "20", false, "0014", "", ""],
"1": ["OutputValue_2", "0", "16", "22", false, "0015", "", ""]
},
"mem": {
"0": [
"Input1Range",
"6",
"8",
"24",
false,
"0016",
"You must use wire bridges for current measurement!",
""
],
"1": ["Input1Multiplier", "1", "16", "25", false, "0017", "", ""],
"2": ["Input1Divisor", "1", "16", "27", false, "0018", "", ""],
"3": ["Input1Offset", "0", "16", "29", false, "0019", "", ""],
"4": [
"Input2Range",
"6",
"8",
"31",
false,
"0020",
"You must use wire bridges for current measurement!",
""
],
"5": ["Input2Multiplier", "1", "16", "32", false, "0021", "", ""],
"6": ["Input2Divisor", "1", "16", "34", false, "0022", "", ""],
"7": ["Input2Offset", "0", "16", "36", false, "0023", "", ""],
"8": [
"Input3Range",
"6",
"8",
"38",
false,
"0024",
"You must use wire bridges for current measurement!",
""
],
"9": ["Input3Multiplier", "1", "16", "39", false, "0025", "", ""],
"10": ["Input3Divisor", "1", "16", "41", false, "0026", "", ""],
"11": ["Input3Offset", "0", "16", "43", false, "0027", "", ""],
"12": [
"Input4Range",
"6",
"8",
"45",
false,
"0028",
"You must use wire bridges for current measurement!",
""
],
"13": ["Input4Multiplier", "1", "16", "46", false, "0029", "", ""],
"14": ["Input4Divisor", "1", "16", "48", false, "0030", "", ""],
"15": ["Input4Offset", "0", "16", "50", false, "0031", "", ""],
"16": [
"ADC_DataRate",
"3",
"8",
"52",
false,
"0032",
"Use lowest value for highest precision and a maximum 50 Hz suppression",
""
],
"17": ["RTD1Type", "0", "8", "53", false, "0033", "", ""],
"18": [
"RTD1Wiring",
"0",
"8",
"54",
false,
"0034",
"You must use wire bridges for 2-wire sensors!",
""
],
"19": ["RTD1Multiplier", "1", "16", "55", false, "0035", "", ""],
"20": ["RTD1Divisor", "1", "16", "57", false, "0036", "", ""],
"21": ["RTD1Offset", "0", "16", "59", false, "0037", "", ""],
"22": ["RTD2Type", "0", "8", "61", false, "0038", "", ""],
"23": [
"RTD2Wiring",
"0",
"8",
"62",
false,
"0039",
"You must use wire bridges for 2-wire sensors!",
""
],
"24": ["RTD2Multiplier", "1", "16", "63", false, "0040", "", ""],
"25": ["RTD2Divisor", "1", "16", "65", false, "0041", "", ""],
"26": ["RTD2Offset", "0", "16", "67", false, "0042", "", ""],
"27": ["Output1Range", "2", "8", "69", false, "0043", "", ""],
"28": [
"Output1EnableSlew",
"0",
"8",
"70",
false,
"0044",
"Enable slew rate deceleration",
""
],
"29": [
"Output1SlewStepSize",
"0",
"8",
"71",
false,
"0045",
"Slew rate step size",
""
],
"30": [
"Output1SlewClock",
"0",
"8",
"72",
false,
"0046",
"lock rate of slew rate deceleration in kHz",
""
],
"31": ["Output1Multiplier", "1", "16", "73", false, "0047", "", ""],
"32": ["Output1Divisor", "1", "16", "75", false, "0048", "", ""],
"33": ["Output1Offset", "0", "16", "77", false, "0049", "", ""],
"34": ["Output2Range", "2", "8", "79", false, "0050", "", ""],
"35": [
"Output2EnableSlew",
"0",
"8",
"80",
false,
"0051",
"Enable slew rate deceleration",
""
],
"36": [
"Output2SlewStepSize",
"0",
"8",
"81",
false,
"0052",
"Slew rate step size",
""
],
"37": [
"Output2SlewClock",
"0",
"8",
"82",
false,
"0053",
"lock rate of slew rate deceleration in kHz",
""
],
"38": ["Output2Multiplier", "1", "16", "83", false, "0054", "", ""],
"39": ["Output2Divisor", "1", "16", "85", false, "0055", "", ""],
"40": ["Output2Offset", "0", "16", "87", false, "0056", "", ""]
},
"extend": {}
}
],
"Connections": []
}
Hope you can assist us.
Best regards,
Mathias
