Troubleshooting Generally In all cases, first check P794 and P795, to verify that you have the correct card for your device. Next check that the SmartLinx module has passed its on-going built-in self test (Siemens Milltronics SmartLinx instrument parameter P790). The result should be “pass”. If “fail” is indicated, either the module is defective, or the module connector on the Siemens Milltronics SmartLinx instrument is defective. If “err1” is indicated, the Siemens Milltronics software doesn’t recognize the ID number of the installed module. Please contact Siemens Milltronics or your distributor for instructions and/or upgraded Siemens Milltronics SmartLinx instrument software.
Troubleshooting Make sure the Siemens Milltronics device is set to a unique address, and does not conflict with any other slave(s) on the bus. Check the configuration of the scanning master, and make sure it is functioning properly. 1. If you have configured the Siemens Milltronics device in the Master and down- loaded it to the processor, but the device is not coming online: • Check which GSD file you use, and make sure you used the correct one (see GSD Files on page 13). • Check the wiring to the card. In particular, check that you have line A and B connected correctly. • Verify that you set the correct address on the card.
Also, please note that the card does not see a charge until the power has been cycled. • Verify that the Read and Write Block sizes are correct. This is particularly important if you are using P762. 2. If the network was working fine until you connected to the Siemens Milltronics device, at which time other devices dropped out: • Check the termination switch on the PROFIBUS card. The network cable has to be terminated at both ends of the LAN, but not in between. • Check your grounding. The PROFIBUS specifications require that all devices be on the same ground. Improper grounding can cause strange effects.
Technical Support or Product Feedback For product feedback or technical support, please contact your local Siemens Milltronics representative or e-mail us at www.siemens.com/automation/support-request. 7ML19981AQ03 SmartLinx PROFIBUS DP – INSTRUCTION MANUAL Page 45