9. Operating system diagnostic messages
Operand Event
ID17 ComBUS interval too long
ID18 SD card present (firmware version 1.40 and higher).
ID19 There is an interrupt overload. One or more interrupt function blocks are being used, and
the interrupt function block sequence is overloading the easy4's controller. Not all interrupt
function blocks can be run correctly.
Additional diagnostic messages for the expansion devices can be assigned to dia-
gnostic operands ID25 through ID96 based on the relevant device characteristics.
Example EASY-E4-DC-6AE1(P)
diagnostic
alarm
Description
DIAG General diagnostic
indicating that a diagnostic event is present
DIAG 1 Current input overload
Current input overloaded (current greater than 23 mA),
excessive voltage
DIAG 2 Wire breakage (I < 4mA)
Analog output overloaded, excessive current, load too small
Open wire at at least one current input (I < 4 mA)
DIAG 3 Output overload
The measuring range has been physically exceeded at an input
DIAG 4 Value range exceeded at output
The measuring range has been physically fallen below at an input,
e.g., the current is < 4 mA for a measuring range of 4–20 mA.
DIAG 5 Value range fallen below at output
The measuring range is physically exceeded at an input,
e.g., the current is > 4 mA for a measuring range of 4–20 mA.
PRSNT Expansion present (firmware version 2.00 and higher)
Example EASY-E4-DC-4PE1(P)
diagnostic
alarm
Description
DIAG
General diagnostic
indicating that a diagnostic event is present
DIAG 1
Measurement range underrun
Configured measuring range fallen below at at least one temperature input,
or a short-circuit has occurred
DIAG 2
Measurement range overrun
Configured measuring range exceeded at at least one temperature input,
or connection cable discontinuity
670
easyE402/24 MN050009ENEaton.com
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