ENOL Error code

ENOL usually occurs when a write operation is attempted with no Listeners addressed. For a device write, ENOL indicates that the GPIB address configured for that device in the software does not match the GPIB address of any device connected to the bus, that the GPIB cable is not connected to the device, or that the device is not powered on.

ENOL can occur in situations where the GPIB interface is not the CIC and the Controller asserts ATN before the write call in progress has ended.

Solutions

Make sure that the GPIB address of your device matches the GPIB address of the device to which you want to write data.

Use the appropriate hex code in ibcmd to address your device.

Check your cable connections and make sure at least two-thirds of your devices are powered on.

Call ibconfig with the IbcPAD (or IbcSAD, if necessary) options to match the configured address to the device switch settings.

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