error when downloading PLC program with MC_MoveAbsolute and MC_MoveRelative

[Young_Chon]

When a PLC open program contains "MC_MoveAbsolute" or "MC_MoveRelative", the PLC program compiles without a fault.  But when the program is downloaded to ctrlX CORE following error message is generated. [FATAL ERROR] Unresolved reference: 'ML_AXSPOSABSEX'.  I cannot find any description of "ML_AXSPOSABSEX".  What is the reason for the error?

ctrlX CORE works without a problem when "MC_MoveVelocity" function block is used and the system runs in velocity mode. 

[Jochen_Mueller]

Please check your version of

• Motion App
• ctrlX WORKS/PLC Engineering / PLCOpen library

This version must be fit together, means come from the same RM.

Background:

With newer versions the PosDirection was add to the FB. And it seems that your PLC-Engeneering (library) is newer than the motion app running at the ctrlX CORE.

Regards

Jochen

[Young_Chon]

The project is based on the ctrlX WORKS Version: 2.2.2.  The PLC and Motion app versions are 1.20.0.  Library versions for PLC library is 2.2.0.4 and the motion library is 2.2.8.0.  what should be the correct library version?

[CodeShepherd · Accepted solution]

At least the major versions of the ctrX PLC app and the ctrlX PLC Engineering needs to fit. For your case it would be app version 1.20.4 in combination with engineering 1.20.1 (part of ctrlX WORKS 1.20.5) OR app version 2.02.0 in combination with engineering 2.2 (part of ctrlX WORKS 2.02.2). The libraries are included accordingly.

Please keep in mind that also the major version of the base system needs to fit.