Chapter 4. WIRING

Connection to ST221

SDA SDB RDA RDB SG

60 61 62 63 64

3 4 1 2 5

Handling Precautions

ST221DE05DCP

Attach 1/2W or greater terminating resistances of 150Ω ±5% at each end of the communications lines.

The DCP552 operates as a master station when connected to an ST221 during communications.

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Image 45
Honeywell DCP552 Mark II user manual Connection to ST221