2. Indicators in the menu
<Communication – Com-Module>.
In the menu 8.2
<Communication – Com-Module>, communications errors are displayed as
text under the line
Status or as a number after the word Error.
No. Fault text
Possible cause
Action
1
COM Module fault
Defective module.
Contact an authorised service partner.
2
Communication
error
Bus coupling via commu‐
nications module interrup‐
ted.
Check bus lines and plug.
Incorrect address settings
or bus parameters in the
module.
Set the values in the SIGMA CONTROL 2
as parametrised in the bus master.
3
Firmware error.
Defective module.
Contact an authorised service partner.
4
COM Module
deactivated
Module not activated.
Initiate communication, see chapter 8.
5
COM Module not
identified
No KAESER communica‐
tions module.
Only use a genuine KAESER communica‐
tions module.
90 Bus monitoring fault Bus master does not re‐
turn the toggle bit within
the monitoring interval.
■ Check bus master software.
■ Check the timeout interval, see chapter
■ Deactivate monitoring if activated inad‐
Tab. 105 Fault indicators in the Communication – Com-Module menu
Result Bus communications will be resumed automatically as soon as the cause of the fault has been
remedied.
10.7.4 Troubleshooting the DeviceNet module
10.7.4.1 Machine and SIGMA CONTROL 2
In the event of a bus communications fault, the red “Communication” LED and the yellow “Warning”
LED will flash on the SIGMA CONTROL 2. The following warning messages will be displayed:
Message
Possible cause
Action
0015 W Com-Module
communication error
Bus coupling via communications module
interrupted.
Check bus lines and
plug.
Incorrect or faulty communications mod‐
ule.
Check communications
module, see below.
Tab. 106 Com-Module communication error warning message
In addition to the
0015 W Com-Module communication error warning message, the system dis‐
plays the following information for the purposes of troubleshooting:
10 Fault Recognition and Rectification
10.7 Communication modules
170
Service Manual Controller
SIGMA CONTROL 2 BLOWER ≥ 4.0.X
No.: 901700 14 E
