Technical support 
  A.2 Problem solving 
SIMATIC IPC547D 
Operating Instructions, 06/2011, A5E03473780-01 
115 
A.2.3  Using modules of third-party manufacturers 
 
Problem  Possible cause  To correct or avoid error 
Check your computer configuration: 
  If the computer configuration corresponds to the delivery 
state, contact your technical support team. 
  In the case of a change in the configuration, restore the 
delivery state. To do this, remove the third-party modules 
and restart the device. If the error no longer occurs, the 
third-party module being used was the cause of the fault. 
Replace the thrid-party module with a Siemens module or 
contact the module supplier. 
  Redundant I/O addresses 
  Redundant hardware interrupts 
and/or DMA channels 
  Fluctuation of signal frequencies 
or levels 
  Different pin assignment 
If the device still crashes, contact your technical support team. 
The device 
crashes during 
startup 
  Insufficient output of an external 
power supply, e.g. UPS 
  Use a higher capacity power supply 
The device does 
not start up or 
switches off 
immediately 
  A counter voltage is fed into the 
device by connected or installed 
third-party components 
Clarify the following with the supplier of the component: 
  The component can be operated without an external power 
supply. 
  The component can be reconfigured so that it only uses the 
external power supply or that of the device. 
  so that only the PC voltage supply or external voltage supply 
is used"