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tM-7561
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| USB to Isolated RS-485 Converter |
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The tM-7561 is a cost-effective USB to RS-485 converter. Connecting the tM-7561 to a PC, you get one RS-485 port that allows you to access RS-485 devices through the USB interface. Like the I-7520, the tM-7561 contains “Self-Tuner” chip auto-tunes the baud rate and data format to the RS-485 network. The tM-7561 module derives its power from the USB port and doesn’t need external power adapter.
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Request For Quotation
- Description
- Comparison Table Repeater
- Hardware Specifications
- Hardware Structure
- Ordering Informations
- Datasheet
Description
Applications

Features
- Fully Compliant with the USB 1.1/2.0 (High Speed)
- Power and data flow indicator for troubleshooting
- 2500 VDC Isolation Protection on the RS-485 side
- Driver Supports Windows 98/ME/2000/XP (32/64-bit)/Vista (32/64-bit)/
7 (32/64-bit)/8 (32/64-bit)/10/Linux - Tiny packaging fits on your DIN-Rail
- No External Power Supply required
- Automatic RS-485 Direction Control
- Operating Temperatures, -25 °C ~ +75 °C
- Low power consumption
- Cost-effective Converter
Comparison Table Repeater
| Models | tM-7561 | I-7561 |
| Serial Interface | Only RS-485 | RS-232/422/485 |
| Dimensions (W x H x D) | 52 mm x 87 mm x 27 mm | 72 mm x 115 mm x 35 mm |
| Remarks | Cost-effective, Entry-level | Entry-level |
Hardware Specifications
| Interface | ||
| USB | Compatibility: USB 1.1 and 2.0 standards | |
| RS-485 | Data+, Data- | |
| RS-485 Transfer Distance | Max. 1,200 m at 9.6 kbps; Max. 400 m at 115.2 kbps (Belden 9841 2P twisted-pair cable, if different cables are used, the transmission distance may change) |
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| Self-Tuner Asic Inside | Yes | |
| Speed | 300 ~ 115200 bps | |
| Connection | RS-485 | Removable 7-Pin Terminal Block |
| USB | Type B | |
| Cable Included | CA-USB18 (1.8 m Cable) x 1 | |
| LED Indicators | ||
| Power | Yes | |
| Power | ||
| Input Voltage Range | +5 VDC from USB | |
| Power Consumption | 0.4 W | |
| Environment | ||
| Casing | Plastic | |
| Flammability | Fire-Retardant Materials (UL94-V0 Level) | |
| Dimensions (W x H x D) | 52 mm x 87 mm x 27 mm | |
| Installation | DIN-Rail | |
| Environment | ||
| Operating Temperature | -25 °C ~ +75 °C | |
| Storage Temperature | -30 °C ~ +75 °C | |
| Humidity | 10 ~ 90% RH, non-condensing | |
Hardware Structure
Pin Assignment

Ordering Informations
| tM-7561 CR | USB to Isolated RS-485 Converter (RoHS) |
| Include Cable | CA-USB18 (1.8 m Cable) x 1 |






