Advanced Function Programming
3-25
SIMATIC 505–2557 Installation and Operation Guide
3.6 Troubleshooting
Use
the following procedures and T
able 3-10 to troubleshoot your system.
•
First examine your V
- or K-memory tables to ensure that the data to be
loaded into the module makes sense.
•
Utilize the worksheets located at the end of this chapter to calculate
key address locations.
•
Examine the relay ladder program to verify that the V
-memory tables
are being loaded into the correct WY65 – WY96 output registers.
•
Examine the starting address of the module and ensure that the offsets
for the X16 input Module_Ready = (starting address + 15) and that the
Y outputs = (starting address + 16), that the WX registers = (starting
address + 32) and the WY registers = (starting address + 64).
•
Examine the relay ladder program to verify that the addresses used
match the offsets as described above and those from the worksheets.
• V
erify that the data identification outputs Y19 – Y17 properly reference
the data that is being loaded.
•
Use the TISOFT status and chart functions to debug the program and
to verify that the X16 Module_Ready input does indeed turn on. If this
input does not turn on, there is a problem with the module. Contact the
Siemens Energy & Automation, Inc., Technical Services Group.
• V
erify that the Y32 Data_Ready output does indeed turn on to load the
data into the SIMA
TIC 505–2557 module.
•
Place a known input value on the module channel and verify that the
channel is producing the correct results.
Tr
oubleshooting the
System