What is SP.UNIT LAY ERR in Q02H CPU?

[thanya 1]

Dear All I need to know the meaning of error code 2107 SP.UNIT LAY ERR and 2501 CAN'T EXE PRG. How can I solve this problem Thank you for your time

[bobtalbot 1]

From GX-Developer Help: Error code list[Error code 2501] Applicable machine High Performance model QCPU, Process CPU, Redundant CPU Universal model QCPU, L series CPU ===================================================================================== Error code(SD0) 2501 Error message CAN'T EXE. PRG. Common information(SD5-15) File name/Drive Name Individual information(SD16-26) - LED status(RUN) Off LED status(ERROR) Flicker PLC operating state Stop Diagnostics timing At power-on/At reset/STOP -> RUN Error description & cause More than one program files exist although no program name is entered in the Program tab of the PLC Parameter dialog box. Corrective action Enter the program names in the Program tab of the PLC Parameter dialog box. Or delete unnecessary programs. ------------------------------------------------------------------------------------- Applicable machine Basic model QCPU ===================================================================================== Error code(SD0) 2501 Error message CAN'T EXE. PRG. Common information(SD5-15) File name/Drive Name Individual information(SD16-26) - LED status(RUN) Off LED status(ERROR) Flicker PLC operating state Stop Diagnostics timing At power-on/At reset/STOP -> RUN Error description & cause (1) There are three or more program files. (2) The program name differs from the program contents. Corrective action (1) Delete unnecessary program files. (2) Match the program name with the program contents.

[Crossbow 295]

It's caused by trying to read an intelligent module that doesn't exist. As I said in your last post, head address is wrong on your second module.

[thanya 1]

Thank a lot every body