The Allen‑Bradley Smart Transmitter Interface User Manual provides installation, configuration, and troubleshooting instructions for models 1770‑HT1…
This manual introduces the Smart Transmitter Interface products that connect Allen‑Bradley programmable controllers to HART field devices. It explains the HART/C0114 protocol, the hardware components (Communications Controller and terminal blocks), and the benefits of using the interface.
The guide covers step‑by‑step installation, power and grounding requirements, wiring configurations, configuration of communication parameters, data routing, and troubleshooting procedures. Appendices provide detailed product specifications, DF1 diagnostic command support, and cable‑length and power‑supply guidelines.
| RS‑232 Interface Baud Rates | 300, 600, 1200, 2400, 4800, 9600, 19200 |
|---|---|
| RS‑232 Connector | DB‑25P (male) |
| Power Consumption | 4.8 watts maximum |
| DC Input Voltage | 24 VDC (up to 600 mA load) |
| Physical Dimensions | 4.3" wide × 14.0" long × 2.7" high |
| Weight | 1.8 lb (0.8 kg) |
| Operating Temperature | 0 °C to 60 °C (32 °F to 140 °F) |
| Number of HART Channels (1770‑HT8/HT16) | 32 multiplexed 4‑20 mA current loops |
| Number of HART Channels (1770‑HT1) | Eight 4‑20 mA current loops |
The 1770‑HT8 and 1770‑HT16 terminal blocks each support 32 multiplexed HART 4‑20 mA current loops.
The Communications Controller requires a 24 VDC supply, with a maximum load of 600 mA.
The RS‑232 interface supports baud rates of 300, 600, 1200, 2400, 4800, 9600, and 19200.
This manual explains 13 error codes. Open a code for its meaning, causes and what to do: