Troubleshooting; Troubleshooting The System - Siemens SIMATIC 505 Installation And Operation Manual

3.6

Troubleshooting

Troubleshooting the
System
SIMATIC 505–2556 Installation and Operation Guide
Use the following procedures and Table 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.
Verify 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.
Verify that the Y32 Data_Ready output does indeed turn on to load the
data into the SIMATIC 505–2556 module.
Place a known input value on the module channel and verify that the
channel is producing the correct results.
Advanced Function Programming 3-25