Remedied from:
ECS axis module V8.0
Behaviour of the new version?
By means of the DDS projects (inclusive application data (*.lc9)) up to a maximum size of 511kB can be loaded to the ECS axis module.
Which products are affected?
ECSXA.XX.74,
EVS9300IX.XX.71,
EVS9300TX.XX.71
What happens?
The program download is aborted and a communication error is indicated. The following error message is indicated by the drive: CCr error, 'no program' error). However, the initial program download to the target system is always completed successfully.
When does the problem occur?
The problem occurs if
- a program has already been downloaded to the target system before and
- the program size exceeds the following, target system depending limit values:
- ServoPLC: 256 Kbytes (exclusively any application data, e.g. cam profile data)
- ECS: 256 Kbytes (inclusively any application data, e.g. cam profile data)
Possible diagnositcs?
The behaviour can be diagnosed if the project is compiled in DDS (menu item '
Project => Compile'). The program size is mentioned in a message box appearing at the end of the compilation. The problem occurs if a program size lager 256 kB is indicated.
Short-term measures/recommendations?
Reduce the program size by:
- excluding unused POUs from the compilation (DDS menu item: Project => Options =>Build options => Exclude objects => Exclude unused)
- optimising the memory of the POUs in the code (through the user).
Evaluation:
The behaviour occurs if programs with a program size larger 256 kB are used. In practice most DDS projects are much smaller so that only few applications will be affected.
The problem will appear most frequently when ECS target systems are used in combination with application data (e.g. cam profile data): In case of the ECS the program size comprises this type of files (64 kB). As a result, the user can only work with a program size of 256 kB - 64 kB = 192 kB in case of the ECS.
