Conversion of hydraulic control system software to PL/M. Final report
Existing software developed for use on the Bendix prototype hydraulic control system has been converted to a higher-level language - programming language/microprocessors (PL-M) - to reflect changes made to the production version hardware. PL/M was chosen to replace assembly language because it is easier to maintain than assembly code, and program modules written for the Bendix mold heating and cooling control system could be incorporated. Several improvements to the prototype software were judged vital to the usefulness of the controller. The production version of the controller software features a more user-friendly operating system than the prototype and an enhanced ability to perform pressure and velocity ramping. The new software has been tested and debugged using an ICE85 in-circuit emulator and a simulator built to simulate the digital inputs and outputs of the control system. The ICE85 emulator allowed down-loading of software to a target system for execution and debugging at 80% of real-time speed. This allowed initial debugging to be done without any field hardware. Software was checked as much as possible and had no apparent malfunction or bugs.
- Research Organization:
- Bendix Corp., Kansas City, MO (USA)
- DOE Contract Number:
- AC04-76DP00613
- OSTI ID:
- 6032783
- Report Number(s):
- BDX-613-3176; ON: DE85009849
- Country of Publication:
- United States
- Language:
- English
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