Troubleshooting Application Layer Generally In all cases, first 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 installed module. Please contact Siemens Milltronics or your distributor for instructions and/or upgraded Siemens Milltronics SmartLinx instrument software.
Make sure the Siemens Milltronics instrument 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. If an AiRanger / SITRANS LU is being used, check P795 to make sure that it is equal to 24 (DeviceNet module). If this parameter is showing any other number then you have the wrong SmartLinx card. Specifically 1. The card passes the built in self test, but will not connect to the network. • Check to make sure P751, P752 are set correctly and that you do not have another instrument on the LAN with the same MAC ID. • Check to make sure all 8 DIP switches are set correctly.
• Check the wiring to the card (or terminal strips) • Verify that the Read and Write Block sizes are correct. This is particularly important if you are using P762. 2. The lights on the card indicate that it is OK and communicating, but I cannot see any data in the PLC. • When you configured your master, did you map the data into the M files (AB only) and did you add code to the PLC you access then. • Some Device net scanners have a control word where you can place the scanner in Ideal Mode. Check that your scanner is in Run mode.
Technical Support or Product Feedback For product feedback or technical support, please contact your local Siemens Milltronics representative or e-mail us at SmartLinx@siemens-milltronics.com. 7ML19981BH02 SmartLinx DeviceNet – INSTRUCTION MANUAL Page 47