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| Message | Cause of Error | Correction |
| (100) Program does not exist | A non-existent program has been selected for processing. For example: | |
| Nesting: In the shape chain selected, a program is displayed that no longer exists on the system disk. | Correct shape chain. | |
| UDL: There are no programs available on the host computer. No programs can be transferred from the host to the control system. | ||
| IO: A non-existent program has been selected for transfer. When this error occurs the system disk might be damaged, since programs can only be selected from the directory displayed by the control system. | Inform ESAB service. | |
| Auto.: A non-existent program was required for processing. This can occur during a call-in of a subroutine or processing of a shape chain. | Check selected program. |