GE Fanuc Emerson | Series Three
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2025/11/10
About
Series Three PLCs were microprocessor‑based controllers that could handle up to 400 I/O points and provided 4K words of user memory. This architecture supported small to medium applications but has been obsolete for years. Replacement parts are available, but it’s wise to migrate to a current platform rather than prolong the life of equipment that lacks support and requires DOS‑based programming tools.