The Moxa ioLogik R1240 is a industrial RS-485 serial remote I/O module providing 8 differential analog input channels at 16-bit resolution with 0-10 VDC and 0/4-20 mA ranges. Dual RS-485 ports with a built-in repeater support redundant wiring or dual-computer backup topologies, and Modbus RTU Slave makes it a drop-in node for any existing PLC or SCADA master.
The Moxa ioLogik R1240 is an RS-485 serial remote I/O module with 8 differential analog input channels at 16-bit resolution with 0-10 VDC and 0/4-20 mA ranges. It is purpose-built for cost-effective, dependable, easy-to-maintain process-control I/O systems. Dual RS-485 ports with a built-in repeater extend the bus electrically without requiring external repeaters, and support redundant wiring or dual-computer topologies for backup communication paths.
The ioLogik R1200 Series speaks Modbus RTU Slave, making it a drop-in node for any Modbus RTU master. Moxa supplies the free ioSearch Windows utility for discovery, configuration, and firmware upgrades over RS-485, and the MX-AOPC UA Server (sold separately) for OPC UA integration when bridging fieldbus devices to modern SCADA stacks. Configuration can also be exchanged via USB flash drive for air-gapped deployments.
| General | |
|---|---|
| Model | ioLogik R1240 |
| Product Family | ioLogik R1200 Series |
| Interface | 8 x AI |
| I/O Section | |
| Analog Inputs | 8 channels, differential, 16-bit resolution, 0-10 VDC / 0-20 mA / 4-20 mA ranges with burn-out detection |
| AI Accuracy | +-0.1% FSR @ 25 deg C; +-0.3% FSR @ -10 to 60 deg C |
| AI Sampling Rate | All channels: 12 samples/sec; per channel: 1.5 samples/sec |
| Serial Interface | |
| Ports | 2 x RS-485 (2-wire: Data+, Data-, GND), terminal block |
| Baudrates | 1200 to 921600 bps |
| Data Bits / Parity / Stop Bits | 8 / None, Even, Odd / 1, 2 |
| Pull High/Low Resistor | 1 kilo-ohm, 150 kilo-ohms |
| Serial Surge / ESD | 1 kV / 15 kV |
| Industrial Protocols | Modbus RTU Slave |
| Configuration | ioSearch Windows utility, USB flash drive upload, web-free CLI via RS-485 |
| LED Indicators | PWR, RDY, P1, P2 |
| Power | |
| Input Voltage | 12 to 48 VDC |
| Power Consumption | 216 mA @ 24 VDC |
| Connector | Screw-fastened Euroblock terminal |
| Physical | |
| Housing | Plastic |
| Dimensions | 27.8 x 124 x 84 mm (1.09 x 4.88 x 3.31 in) |
| Weight | 200 g (0.44 lb) |
| Installation | DIN-rail or wall mounting |
| Wiring | I/O cable 16-26 AWG; power cable 12-24 AWG |
| Isolation | 3k VDC or 2k Vrms |
| Environmental | |
| Operating Temperature | -10 to 75 deg C (standard) |
| Storage Temperature | -40 to 85 deg C |
| Ambient Humidity | 5 to 95% (non-condensing) |
| Altitude | 2000 m max. |
| Shock / Vibration | IEC 60068-2-27 / IEC 60068-2-6 |
| Certifications | |
| EMC | EN 55032/24 |
| EMI | CISPR 32, FCC Part 15B Class A |
| EMS | IEC 61000-4-2/-3/-4/-5/-6/-8 (ESD Contact 4 kV / Air 8 kV; Surge Power 2 kV) |
| Safety | UL 508 |
| Green | RoHS, CRoHS, WEEE |
| MTBF (Telcordia SR-332) | 1,239,293 hrs (whole series) |
| Warranty | |
| Warranty Period | 5 Years |
Same day dispatch on all stocked items.
