Replacing Yokogawa AAI835: Wiring and Barrier Checks Before Swap
Before replacing a Yokogawa AAI835, verify the 4-in/4-out channel map, power-loss loop behavior, barrier type, output load, cable, and redundancy.
Manufacturer: BECKHOFF
Product No.: IP2042-B800
Country of origin:Germany
Product Type: Fieldbus Boxes
Payment: T/T, Western Union
Weight: 2000g
Dimensions: 30 mm x 175 mm x 26.5 mm
Shipping port: Xiamen
Warranty: 12 months
The BECKHOFF IP2042-B800 is a decentralized industrial Fieldbus Box featuring 8 digital outputs designed for direct machine-level installation without control cabinets. Operating on an RS485 communication protocol via an open, documented protocol, this IP65/66/67 rated module integrates seamlessly into distributed automation architectures. It provides robust signal handling in harsh industrial environments where direct mounting on machinery is required.
This compact device accommodates ohmic, inductive, and lamp loads with a nominal output voltage of 24 V DC. Connection technology utilizes M12 screw-type connectors for digital outputs, an M12 B-coded socket for the bus interface, and M8 male sockets for power supply feeds. Configuration is supported via the KS2000 software tool, making the IP2042-B800 suitable for modular machine building and decentralized plant topologies.
| Parameter | Specification |
|---|---|
| Manufacturer | BECKHOFF |
| Exact Model | IP2042-B800 |
| Product Type | Fieldbus Box |
| Protocol | Open, documented protocol |
| Configuration | Via KS2000 |
| Country of Origin | Germany |
| Parameter | Specification |
|---|---|
| Number of Outputs | 8 |
| Output Connections | M12, screw type |
| Load Type | Ohmic, inductive, lamp load |
| Nominal Output Voltage | 24 V DC (-15 percent / +20 percent) |
| Max. Output Current | 2 A per channel, individually short-circuit proof |
| Total Current Max. | 12 A (channel 0 to 3: sum 4 A, 4+5: sum 4 A, 6+7: sum 4 A) |
| Short-Circuit Current | Typ. 4 A |
| Bit Width in Process Image | 8 outputs |
| Parameter | Specification |
|---|---|
| Data Transfer Medium | Shielded copper cable, 2 x 0.25 mm square |
| Cable Length | Max. 1200 m (depending on baud rate) |
| Data Transfer Rates | 9.6 kbaud, 19.2 kbaud, 38.4 kbaud (default) |
| Bus Interface | 1 x M12 socket, 5-pin, B-coded |
| Power Supply Connection | Feed: 2 x M8 male socket, 4-pin; no downstream connection |
| Control Voltage | 24 V DC (-15 percent / +20 percent) |
| Box Supply Current | 45 mA + current consumption of sensors, max. 0.5 A |
| Parameter | Specification |
|---|---|
| Housing Material | PA6 (polyamide) |
| Protection Class | IP65, IP66, IP67 (conforms to EN 60529) |
| Dimensions (W x H x D) | 30 mm x 175 mm x 26.5 mm |
| Weight | Approx. 210 g |
| Operating Temperature Range | 0 to +55 degC |
| Storage Temperature Range | -25 to +85 degC |
| Vibration / Shock Resistance | Conforms to EN 60068-2-6 / EN 60068-2-27 |
| EMC Immunity / Emission | Conforms to EN 61000-6-2 / EN 61000-6-4 |
| Installation | 2 fixing holes 3.5 mm diameter for M3 |
| Approvals / Markings | CE, UL |
| Interface | Function |
|---|---|
| Digital Outputs (8 channels) | M12 screw-type connectors for actuator connection |
| Bus Interface | 1 x M12 socket, 5-pin, B-coded for RS485 communication |
| Power Supply Feed | 2 x M8 male socket, 4-pin for control voltage input |
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Returns & Warranty

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Returns & Warranty
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| Country of origin |
Germany
|