Appendix; Communication Problems; A.1 Communication Problems - Siemens SIMATIC PCS 7 Operating Manual

Appendix

A.1

Communication Problems

If communication problems occur, you should check for the following:
Connecting
● Configuration
● Hardware structure
● Addressing the devices
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Operating Manual, 02/2014, A5E33203676-AA
– Is the programming device or PC interface configured correctly? The SIMATIC Manager
menu command Options > Set PG/PC Interface or the Windows Control Panel can be
used to set the PG/PC interface parameters.
– If you are not performing configuration in HW Config: Is the correct interface assigned
to the PC? Is this interface assigned to the correct network? Check the assignment by
selecting the interface and the required network with the menu command Edit > Object
Properties in the "Communication" tab.
– In case of routing: Is a programming device/PC included in the project in the component
view? Is the correct interface assigned to the programming device/PC?
– Are the addresses (address, slot, channel) assigned correctly and uniquely in the
project?
– Is the system complete and has it been cabled correctly? Are all the connectors plugged
in correctly? Are the modules inserted correctly?
– Are all the modules and devices of the plant supplied correctly?
– Are there low-or high-frequency interference in the system? Is the system subject to the
influence of electromagnetic fields?
– Is there a short circuit on the bus or a wire break in a wire leading to the device?
– Are the addresses (address, slot, channel) set correctly for the devices in the system?
– Do the addresses set on the devices agree with the configured addresses?
The address settings are made on the devices via parameter assignments, hardware
switches, or a combination of both.
The device address can be set by means of SIMATIC PDM for some field devices
(PROFIBUS DP/PA and FF). You can find additional information on this in the section
"Delivery contents (Page 22)".
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