* Solved the problem that no error is detected in program check even when an array variable without address assignment is used in a ST program/ST action/ST transition. * Solved the problem that transferring CP1E programs to CX-Simulator might fail when the programs include interruption tasks. * Solved the problem that a fatal error might occur in the PLC if a structure BOOL type member is used for the IF statement condition for the FBST program in CJ2H/CJ2M. * Solved the problem that program errors cannot be detected if an array of variable type index is specified in the DIFU/DIFD instruction operands in the FB ladder. * Solved the problem that an error occurs in the program check for a program with the maximum display capacity in the Memory view, when interrupt tasks and FB definitions are used simultaneously in a PLC with an area for FB only. * Solved the problem that the UM size displayed in the FB Memory view of CP1 might be incorrect when there is an FB definition and no FB instance. * Solved the problem that CX-Programmer might terminate abnormally, when a program that included FB instance was uploaded from the PLC.
![cx one v4 download cx one v4 download](https://8z1xg04k.tinifycdn.com/downloads/manual/en/thumb/w585_cxone-al_d-v4_nx-io_configurator_operation_manual_en.jpg)
* Solved the problem that an error might not be detected in program check even though input condition of the FB instance was not correct. * Solved the problem that timer/counter numbers were determined incorrectly as duplicated with CIO address when the CIO address was specified as automatic allocation area.
![cx one v4 download cx one v4 download](https://1.bp.blogspot.com/-tWTsDL3qw0E/XuoPd6-QkUI/AAAAAAAAGl8/HkXlRxPf5tcmBeD1-2dm-WFdmkgiwv8AwCK4BGAsYHg/w400-h225/cx-one-v4.51.png)
* Solved the problem that a fatal error occurred on the PLC after the project was downloaded, becauseDR0+,IR00 that was specified for instruction's parameter was not detected in error check.
![cx one v4 download cx one v4 download](https://64.media.tumblr.com/886a8fd0072607dcb6f97e4832728836/b6ad2797d654d9d2-b0/s540x810/acde96b31a94d5acdbe66a14316a34dac1c5de37.png)
* Solved the problem that CX-Programmer terminated abnormally or became inoperable when a project with a long project name or a long PLC name was loaded. When CX-One Lite is installed: CP1L-M => CP2E-S When CX-One is installed: CJ1M-CPU11 => CJ2M-CPU11