For error details, see the following.
T.8.3 When PROFIBUS is used
Is an error message displayed?
Cause
Communication cannot be established with the GP3000 Series PROFIBUS Slave Unit when an error messages appears on the Display.
Solution
For error details, see the following.
T.8.3 When PROFIBUS is used
Is the connected device correctly set with GP-Pro EX?
Cause
The connected device may not be correctly set with GP-Pro EX.
Solution
Check if [PROFIBUS DP Slave] is selected from [PROFIBUS International] in the setting of the connected device.
Is the PROFIBUS cable properly connected?
Cause
The PROFIBUS cable may not be properly connected.
Solution
Reconnect the PROFIBUS cable firmly. For details about the cable connection, refer to the following manual.
GP3000 Series PROFIBUS Slave Unit User Manual
Is the PROFIBUS (Slave) Unit properly connected to the display unit?
Cause
The PROFIBUS (Slave) Unit may not be properly connected to the display unit.
Solution
Turn OFF the display unit and then disconnect the power supply cable. Check if any connector pins are bent or broken. Check that the connection between the PROFIBUS (Slave) Unit and the GP unit is correct. Turn ON the GP unit. If PWR and ERR LEDs do not turn ON after turning the power ON, the PROFIBUS (Slave) Unit may be faulty. Please contact customer support.
Is the ERR LED flashing?
Cause
If the ERR LED illuminates, the communication may not be established due to any of the following improper network settings. Transmission path is broken. The master cannot be used. Electric power is not supplied. Master and display unit I/O communication settings disagree. Master and display unit slave address setting disagree.
Solution
Check the error message on the GP screen. Perform the solution and then set the network properly. For error details, see the following.
For setup process, see the "GP-Pro EX PLC/Device Connection Manual".
Device/PLC Connection Manual
If the ERR LED still illuminates after resetting the network, the PROFIBUS (Slave) Unit may be faulty. Please contact customer support.