D300529 0115 - BL67 I/O modules
8-23
BL67-4AO-V, -10/0 … +10 VDC
8.4.3 Diagnostic and status messages
LED status displays
Diagnostic data
This module has the following diagnostic data per channel:
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Diagnostics Meaning
Table 8-12:
LED status dis-
plays
LED Display Meaning Remedy
D red, flashing,
0.5
Hz
Diagnostics pending -
Red Module bus communication
failure
Check if more than two ad-joining
electronics modules have been
pulled. This concerns modules
located between this module and
the gateway.
OFF No error messages or diagnos-
tics
–
0 to 4 Green Input channel x active -
Green
flashing,
0.5 Hz
Underflow diagnostic at input -
Green
flashing, 4 Hz
Overflow diagnostic at input -
OFF Input channel x inactive
Hardware-
e
rror
- - - Overflow/
underflow
(NE 43 only)
--Output value
out of range
Table 8-13:
diagnostics
Output value
out of range
Underrun/overrun of the valid output range (limit values see page 8-27ff.)
Overflow/underflow
(NE 43 only)
The output value lies under or over the set output value and can not be given
out (limit values see page 8-31ff.)
Hardware failure Shows common errors of the module hardware (e.g. CRC-error, calibration
error, …). The return analog value in case of an error is "0".
Module exchange necessary!
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