
Troubleshooting
2
0
2
0
-0
6
61
Overload/Short Circuit of the Digital 500 mA Outputs
The digital outputs at the C/Q pin are protected against short circuit and overload. In case of a
fault, the output is switched off automatically and cyclically switched on again automatically.
This includes:
•
MI-FMA
: Module information
—
force mode active
•
MI-VAL
: Module information
—
IO-Link validation error
•
MI-SCB
: Module information
—
actuator short circuit, channel B
•
MI-SCA
: Module information
—
actuator short circuit, channel A
•
MI-SCS
: Module information
—
sensor short circuit
•
MI-LVA
: Module information
—
low-voltage auxiliary power supply
•
MI-LVS
: Module information
—
low-voltage system/sensor power supply
•
CE-X1A ... CE-X8A
: Channel error, channel A (pin 4) of connections X1 to X8
Overload/Short Circuit of the Digital 2 A Outputs
There are four 2 A outputs at the B connections of the modules. A channel error is identified by
comparing the target value set by a controller and the actual value of an output channel.
If an output channel is enabled (rising edge of the channel status) or disabled (falling edge), the
channel errors are filtered for the period of time that you have set with the "Surveillance Time-
out" parameter in the module configuration. The value of this parameter can range from 0 to
255 ms; the factory setting is 80 ms. The filter is used to prevent premature error messages
when a capacitive load is enabled or an inductive load is disabled and, in the event of other
voltage peaks, when a status changes.
When the output channel is in the static state, i.e., while the channel is permanently switched
on or switched off, the filter time between error detection and the diagnostic message is typi-
cally 5 - 10 ms.
The following table shows the used diagnostic bits in the status data of the IO-Link master:
This includes:
•
MI-FMA
: Module information
—
force mode active
•
MI-VAL
: Module information
—
IO-Link validation error
•
MI-SCB
: Module information
—
actuator short circuit, channel B
Input
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Byte 4
0
MI-FMA
MI-VAL
MI-SCB
MI-SCA
MI-SCS
MI-LVA
MI-LVS
Byte 8
CE-X8A
CE-X7A
CE-X6A
CE-X5A
CE-X4A
CE-X3A
CE-X2A
CE-X1A
Target value
Actual value
Comment
Active
Active
OK, no diagnosis
Off
Off
OK, no diagnosis
Active
Off
Short circuit
Channel display is red
Channel error bit is set in the diagnosis.
Channel is locked once the error has been resolved
Input
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Byte 4
0
MI-FMA
MI-VAL
MI-SCB
MI-SCA
MI-SCS
MI-LVA
MI-LVS
Byte 9
CE-X8B
CE-X7B
CE-X6B
CE-X5B
0
0
0
0