Description
The Advantech ADAM-4019+ is a high-performance 8-channel analog input module designed for remote data acquisition over RS-485 (Modbus/RTU or Advantech ASCII protocol). It is specifically optimized for thermocouple (TC) and mV signal measurement, with each channel independently configurable for:
- Thermocouple Types: J, K, T, E, R, S, B, N
- mV ranges: ±15 mV, ±50 mV, ±100 mV, ±500 mV, ±1 V, ±2.5 V
- Optional + current input via shunt (externally)
- Burnout detection for open TC
The ADAM-4019+ features 3000 V DC optical isolation between I/O and RS-485 bus, on-board cold-junction compensation (CJC) for TC types, and watchdog timer — making it ideal for distributed temperature monitoring in harsh industrial environments without running analog signal wires back to a central PLC analog card.
Key Features
- Inputs: 8 × Differential Analog Inputs (individually configurable per channel)
- Input Types: Thermocouple J/K/T/E/R/S/B/N, mV (±15 mV … ±2.5 V), V (±1 V, ±2.5 V — some ranges)
- Resolution: 16-bit A/D converter
- Communication: RS-485, 2-wire, Modbus/RTU (default) & Advantech ASCII (selectable)
- Isolation: 3000 V DC (I/O ↔ Communication)
- Cold-Junction Compensation (CJC): Built-in for TC measurement (±1 °C accuracy typical)
- Power Supply: +10 … +30 V DC (typical 24 V DC)
- Mounting: DIN rail (35 mm)
- Country of Origin: Taiwan
Technical Specifications (ADAM-4019+)
Parameter | Specification |
|---|---|
Model / Order Code | ADAM-4019+ (Advantech) |
Analog Input Channels | 8 differential (configurable individually) |
A/D Resolution | 16 bits |
Input Ranges (Software Selectable) | TC: J, K, T, E, R, S, B, N; mV: ±15, ±50, ±100, ±500 mV; V: ±1 V, ±2.5 V (check manual for exact list) |
Accuracy (TC mode) | ±0.1 % FSR ± 0.5 °C (CJC included) — typical |
Cold-Junction Compensation (CJC) | Built-in, auto-corrected — accuracy ±1 °C |
Burnout Detection | Yes — detects open thermocouple (drives reading to over/under-range) |
Communication Interface | RS-485 (2-wire half-duplex) — Modbus/RTU (default 9600 bps, 8N1) & Advantech ASCII |
Max. Nodes on Bus | Up to 256 ADAM modules (with repeaters) |
Isolation Voltage | 3000 V DC (I/O side to RS-485 side) |
Power Supply | +10 … +30 V DC (typical 24 V DC @ < 2 W) |
Connectors | Removable screw terminal block (signal + power + RS-485 A/B / GND) |
Watchdog Timer | Yes — recovers from communication lock-up |
Mounting | 35 mm DIN rail (EN 60715) |
Dimensions (W×H×D) | 72 mm × 118 mm × 35 mm (approx.) |
Weight | ~ 0.13 kg |
Operating Temp. | -10 … +70 °C (some sources -25 … +75 °C — check datasheet rev.) |
Standards | CE, FCC, RoHS |
💡 Configuration & Setup Tips:
Use Advantech Utility (AdamApax .NET Utility / Adam-4000 Utility) to set Modbus slave ID, baud rate, input range per channel, and CJC offset. For Modbus masters (PLC/DCS/SCADA): Holding registers typically map AI values as signed integers (e.g., Reg 0x0000–0x0007 = Ch1–Ch8). Refer to Advantech Modbus mapping table. RS-485 wiring: A(+) / B(-) — ensure proper polarization; add 120 Ω termination resistor at bus ends if > 100 m or high baud. If mixing TC types on one module — ADAM-4019+ allows per-channel configuration — very flexible vs fixed-range cards.
Warranty & After-Sales
- Factory new units: 12 months warranty
- Refurbished units: 3-6 months warranty (loop-back tested with simulator)
- Technical support for:
- Per-channel configuration (TC type / mV range selection via utility)
- Modbus register mapping for S7-1200/1500, CJ series, Delta, etc.
- RS-485 bus wiring & termination (A/B polarity, GND reference, repeater need)
- CJC offset calibration & burnout interpretation
- Cross-reference vs. Moxa ioLogik E1200 TC modules or ICP DAS I-7018 if needed
Delivery Time
- Standard delivery: 3-5 working days (stock items)
- Express shipping available upon request
Why Choose Our Store
- Genuine Advantech ADAM series remote I/O — not re-badged clones with poor CJC stability
- Global supply network with competitive pricing
- Expertise in distributed temperature DAQ & Modbus RS-485 network design
- Comprehensive technical documentation (register map, utility software guide, CJC note)
- Responsive customer service and support
Applications
- Distributed Furnace / Oven Temp. Monitoring: Multiple TC points around plant — poll via RS-485 back to SCADA (no expensive analog wiring)
- Plastic / Extrusion Machine Zone Temp.: 8+ zones per ADAM-4019+; multiple modules on one RS-485 bus
- Food Processing (Oven / Freezer): TC monitoring with CJC — hygienic sensors + remote DAQ
- Environmental Chamber Testing: Multi-point TC logging via Modbus to PC or PLC
- Retrofit: Replace hard-wired TC to central PLC analog card — reduce noise-prone analog runs

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