Short-Circuit To Ground; Invalid/Inconsistent Firmware Present; Channel Failure Acknowledgment; F-Address Memory Not Accessible - Siemens SIMATIC S7-1500 Manual

Diagnostic alarm

Short-circuit to ground

Invalid/inconsistent firmware
present
Channel failure acknowl-
edgment
F-address memory not ac-
cessible

Frequency too high

Undertemperature

Output defective

Digital output module F-DQ 8x24VDC/2A PPM (6ES7526-2BF00-0AB0)
Manual, 01/2016, A5E03858037-AA
Fault Meaning
code
262 Short-circuit to ground can mean:
D
The output cable is short-circuited to
•
ground.
The output signal is short-circuited to
•
ground.
There is a short-circuit between two
•
output channels.
The capacitive load is too high.
•
You must eliminate the error within 100
hours; otherwise, the F-module is perma-
nently passivated and an acknowledg-
ment is no longer possible.
283 The firmware is incomplete and/or firm-
D
ware added to the F-module is incompat-
ible. This leads to errors or functional
limitations when operating the F-module.
779 A channel fault was detected. Confirma-
D
tion is required to enable the channel.
781 The F-source address and F-destination
D
address stored in the coding element
cannot be accessed.
785 The maximum switching frequency of the
D
F-module has been exceeded.
786 The minimum permissible temperature
D
limit has been violated.
797 The F-module has detected an internal
D
error.
You must eliminate the error within 100
hours; otherwise, the F-module is perma-
nently passivated and an acknowledg-
ment is no longer possible.
Possible causes:
The capacitive load is too high.
•
Short-circuit to L+ or M
•
The F-module has detected an inter-
•
nal error and has reacted in a safety-
related manner.
Interrupts/diagnostic messages
6.3 Diagnostic alarms
Remedy
Correct the process wiring.
•
Increase the test times (dark, light,
•
switch-on tests).
Perform a firmware update for all
•
parts of the F-module and note any
error messages.
Use only firmware versions re-
•
leased for this F-module.
Confirm the channel fault.
Verify that the coding element is pre-
sent or replace the coding element.
Reduce the switching frequency (see
Technical specifications (Page 51))
Operate the F-module within the speci-
fied temperature range (see Technical
specifications (Page 51))
Increase the test times (dark, light,
•
switch-on tests).
Check the wiring.
•
Consider replacing the F-module.
•
49