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4.4 - Errorcodes

UD Errorcodes

All functions return an LJ_ERROR error code as listed in the following tables.

Table 4.4-1. Request Level Error Codes

Errorcode Name Description
-2 LJE_UNABLE_TO_READ_CALDATA Warning: Defaults used instead.
-1 LJE_DEVICE_NOT_CALIBRATED Warning: Defaults used instead.
0 LJE_NOERROR  
1 LJE_COMMAND_LIST_ERROR
2 LJE_INVALID_CHANNEL_NUMBER Channel that does not exist (e.g. DAC2), or data from stream is requested on a channel that is not in the scan list.
3 LJE_INVALID_RAW_INOUT_PARAMETER  
4 LJE_UNABLE_TO_START_STREAM  
5 LJE_UNABLE_TO_STOP_STREAM  
6 LJE_NOTHING_TO_STREAM  
7 LJE_UNABLE_TO_CONFIG_STREAM  
8 LJE_BUFFER_OVERRUN Overrun of the UD stream buffer.
9 LJE_STREAM_NOT_RUNNING  
10 LJE_INVALID_PARAMETER  
11 LJE_INVALID_STREAM_FREQUENCY  
12 LJE_INVALID_AIN_RANGE  
13 LJE_STREAM_CHECKSUM_ERROR  
14 LJE_STREAM_COMMAND_ERROR  
15 LJE_STREAM_ORDER_ERROR Stream packet received out of sequence.
16 LJE_AD_PIN_CONFIGURATION_ERROR Analog request on a digital pin, or vice versa.
17 LJE_REQUEST_NOT_PROCESSED Previous request had an error.
19 LJE_SCRATCH_ERROR  
20 LJE_DATA_BUFFER_OVERFLOW  
21 LJE_ADC0_BUFFER_OVERFLOW  
22 LJE_FUNCTION_INVALID  
23 LJE_SWDT_TIME_INVALID  
24 LJE_FLASH_ERROR  
25 LJE_STREAM_IS_ACTIVE  
26 LJE_STREAM_TABLE_INVALID  
27 LJE_STREAM_CONFIG_INVALID  
28 LJE_STREAM_BAD_TRIGGER_SOURCE  
30 LJE_STREAM_INVALID_TRIGGER  
31 LJE_STREAM_ADC0_BUFFER_OVERFLOW  
33 LJE_STREAM_SAMPLE_NUM_INVALID  
34 LJE_STREAM_BIPOLAR_GAIN_INVALID  
35 LJE_STREAM_SCAN_RATE_INVALID  
36 LJE_TIMER_INVALID_MODE  
37 LJE_TIMER_QUADRATURE_AB_ERROR  
38 LJE_TIMER_QUAD_PULSE_SEQUENCE  
39 LJE_TIMER_BAD_CLOCK_SOURCE  
40 LJE_TIMER_STREAM_ACTIVE  
41 LJE_TIMER_PWMSTOP_MODULE_ERROR  
42 LJE_TIMER_SEQUENCE_ERROR  
43 LJE_TIMER_SHARING_ERROR  
44 LJE_TIMER_LINE_SEQUENCE_ERROR  
45 LJE_EXT_OSC_NOT_STABLE  
46 LJE_INVALID_POWER_SETTING  
47 LJE_PLL_NOT_LOCKED  
48 LJE_INVALID_PIN  
49 LJE_IOTYPE_SYNCH_ERROR  
50 LJE_INVALID_OFFSET  
51 LJE_FEEDBACK_IOTYPE_NOT_VALID  
52 LJE_SHT_CRC  
53 LJE_SHT_MEASREADY  
54 LJE_SHT_ACK  
55 LJE_SHT_SERIAL_RESET  
56 LJE_SHT_COMMUNICATION  
57 LJE_AIN_WHILE_STREAMING AIN not available to command-response functions while the UE9 is stream.
58 LJE_STREAM_TIMEOUT  
59 LJE_STREAM_CONTROL_BUFFER_OVERFLOW
60 LJE_STREAM_SCAN_OVERLAP New scan started before the previous scan completed. Scan rate is too high.
61 LJE_FIRMWARE_VERSION_IOTYPE IOType not supported with this firmware.
62 LJE_FIRMWARE_VERSION_CHANNEL Channel not supported with this firmware.
63 LJE_FIRMWARE_VERSION_VALUE Value not supported with this firmware.
64 LJE_HARDWARE_VERSION_IOTYPE IOType not supported with this hardware.
65 LJE_HARDWARE_VERSION_CHANNEL Channel not supported with this hardware.
66 LJE_HARDWARE_VERSION_VALUE Value not supported with this hardware.
67 LJE_CANT_CONFIGURE_PIN_FOR_ANALOG  
68 LJE_CANT_CONFIGURE_PIN_FOR_DIGITAL  
69 LJE_LJTDAC_ACK_ERROR  
70 LJE_TC_PIN_OFFSET_MUST_BE_4_TO_8  
71 LJE_INVALID_DIFFERENTIAL_CHANNEL  
72 LJE_DSP_SIGNAL_OUT_OF_RANGE  
73 LJE_STREAM_INVALID_CONNECTION  
     
112 UART_TIMEOUT  
113 UART_NOTCONNECTED Use ConfigIO to assign pins to UART
114 UART_NOTENABLED Use AsynchConfig to enable UART
115 I2C_BUS_BUSY  

Table 4.4-2. Group Level Error Codes

Errorcode Name Description
1000 LJE_MIN_GROUP_ERROR Errors above this number stop all requests.
1001 LJE_UNKNOWN_ERROR Unrecognized error that is caught.
1002 LJE_INVALID_DEVICE_TYPE  
1003 LJE_INVALID_HANDLE  
1004 LJE_DEVICE_NOT_OPEN AddRequest() called even thought Open() failed.
1005 LJE_NO_DATA_AVAILABLE GetResult() call without calling a Go function, or a channel is passed that was not in the request list.
1006 LJE_NO_MORE_DATA_AVAILABLE  
1007 LJE_LABJACK_NOT_FOUND LabJack not found at the given ID or address.
1008 LJE_COMM_FAILURE Unable to send or receive the correct number of bytes.
1009 LJE_CHECKSUM_ERROR
1010 LJE_DEVICE_ALREADY_OPEN USB connection in use by another process.
1011 LJE_COMM_TIMEOUT
1012 LJE_USB_DRIVER_NOT_FOUND
1013 LJE_INVALID_CONNECTION_TYPE
1014 LJE_INVALID_MODE
1015 LJE_DEVICE_NOT_CONNECTED Previously open device is no longer connected.

Table 4.4-1 lists the errors which are specific to a request. For example, LJE_INVALID_CHANNEL_NUMBER. If this error occurs, other requests are not affected.

Table 4.4-2 lists errors which cause all pending requests for a particular Go() to fail with the same error. If this type of error is received the state of any of the request is not known. For example, if requests are executed with a single Go() to set the AIN range and read an AIN, and the read fails with an LJE_COMM_FAILURE, it is not known whether the AIN range was set to the new value or whether it is still set at the old value.

2 comments

Submitted by Anonymous (not verified) on Sun, 03/18/2012 - 08:09

I have been using the LabJack throughout my microcontrollers course at Algonquin College and one of the hardest things to figure out for most of my class was what the error codes meant. I'm stumbling upon this site well after completing that course and availability to this information at a prior date would have been extremely useful. Maybe a hyperlink on different parts of the site would help make this information widely known. My first resort was to google it but it seems the LabJack has its own set of error codes as stated above and I had a very hard time finding them.

Submitted by LabJack Support (not verified) on Mon, 03/19/2012 - 12:14

Rather than using this page, a good idea is to use the ErrorToString function in the UD driver.  You give this an errorcode and it returns a string name for that errorcode.  You should see this technique in most examples.

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