1 Channel HART to Single Mode Fiber Converter. 1 COM RS-232 UART Interface. Has a maximum communication distance of up to 30 km. SC Duplex Type; 100 Base-FX. Power consumption at 3W. Has operating temperature range of -25°C ~ +75°C (-13°F ~ +167°F).
The HRT-227CS device is a HART to Fiber converter designed to further extend the communication distance through fiber optic connection. This device is ideal for having HART devices transmit information across a fiber transmission medium because it converts the HART signals to fiber optic cabling. A HART 250 Ω resistor dip switch adjuster is built-in, as well as features for detecting when a break occurs between fiber connections.
HART modules that are configured with the same Group ID can communicate with one another through fiber networks. Under a star-type topology network layout that works with fiber switches, different HART fiber networks can be easily distinguished.
For the image diagram below:
1. The above HART network 1 uses two HRT-227CS with Group ID=1.
2. The below HART network 2 uses two HRT-227CS with Group ID=2.
3. These two HART networks connected together via HRT-227CS with fiber switch. The HART network 1 and network 2 can communicate simultaneously without any interference.
The HC_Tool utility allows for further configuration of the HRT-227CS which can makes the data processing and networking of HART devices more flexible. Models like I-7567, I-7570, and I-7547 or transmit/receive HART frame for HART communication very quickly and fast (Download HC_Tools Utility).
Support HART Short/Long frame
Support HART Burst Mode
Support point-to-point or multi-drop HART Mode
Support connecting up to 15 HART slave devices
Allow two HART Masters
Provided HC_Tool for module configuration
Support firmware update via ComPort
Fiber Type: SC; Single Mode; 100 Base-FX
Fiber maximum transmission distance up to 30 km
Adjustable 250Ω loop resistor by dip switch
Provide Fiber broken line detection
Provide PWR/Fiber/HART LED
The HART port can communicate with each other with the same Group ID
2-pin screwed terminal block (HART+, HART-)
Selectable 250Ω loop resistor
Only Digital Data
SC Duplex type; Single mode; 100 Base-FX
Wave Length (nm)
Fiber Cable (μm)
8.3/125, 8.7/125, 9/125 or 10/125
Transmission Distance (km)
30 (indicative only)
Min./Max. TX Output (dBm)
-15 / -8
Max. RX Sensitivity (dBm)
Max. RX Overload (dBm)
RS-232 (TXD / RXD / GND) for configuration (1200, O, 8, 1)
PWR, FB_Ack, FB_Err, HT_Err, HT_Tx and HT_Rx
Unregulated +10 ~ +30 VDC
Power reverse polarity protection, Over-voltage brown-out protection