Description
MASTER-K200S CPU with added communications and control features: RS-422/485 master capability and integrated PID. Same core CPU speed and memory as the AS family.
The Polar Energy Assessment:
K3P-07BS builds on the K3P CPU base by including RS-422/485 master functionality and an on-CPU PID block set. Listed as the RS-422/485 master function (1:N master station, block-based access, up to 32 stations) and integrated PID features (P, PI, PID, manual output etc.), which removes the need for an external PID module in many HVAC and process applications. Use K3P-07BS when you need modest fieldbus master capability and built-in PID control without adding extra function modules.
Pros
- RS-422/485 master built in, useful for small local networks or gateway tasks.
- Integrated PID saves module slots and simplifies PID installations.
- Same proven speed and memory as other K200S CPUs.
Limitations
- Master port and PID are modest in scope; for heavy fieldbus or advanced control consider higher tier LS CPUs.
- Still limited program memory vs larger modern PLC families.
Typical use cases
- Small process loops, AHU or chiller controls requiring local PID, compact distributed networks where an RS-422/485 master is convenient, and OEM machines needing integrated PID.

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