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AL42 and AL43 – 8 digital inputs and 8 digital outputs
Linking digital IO signals in the field
The Ethernet modules of the AL42 (StandardLine) and AL43 (PerformanceLine) series from ifm combine 8 digital inputs and 8 digital outputs in one compact device – ideal for direct field use. Thanks to integrated counter functions up to 4,500 Hz and innovative SSC switching logic, simple control tasks can be implemented directly in the module without the need for an additional controller.
Whether recording sensor values or directly switching actuators, the modules offer maximum efficiency for modern automation solutions. With their robust design and flexible fieldbus compatibility, they are the perfect choice for Industry 4.0 applications.
Discover them now and take your machine communication to the next level!
System overview Ethernet modules DI/DO
8 digital inputs and 8 digital outputs
The StandardLine (AL42 series) and PerformanceLine (AL43 series) Ethernet modules combine 8 digital inputs with 8 digital outputs and are ideal for acquiring digital signals and counting internally. At the same time, actuators can be controlled directly in the field based on the counter values using various output switching functions. The differences lie primarily in the power distribution of the outputs, the power supply options, and the current limit.
- 4 x A ports and 4 x B ports for DI/DO
- M12 A-coded (StandardLine) or M12 L-coded (PerformanceLine) power supply
- Variants for common fieldbuses
- Output power up to 3.6 A
- Current measurement
- Counter function with SSC
|
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|---|---|---|
| AL42xx | AL43xx | |
| Daisy chain | Fieldbus | Power + fieldbus |
| Power | M12 A-code 3.9 A (US) 4 A (UA) |
M12 L-code 16 A (US) 16 A (UA) |
| Ports | M12 A-code 4 x 2 DO 4 x 2 DI |
M12 A-code 4 x 2 DO 4 x 2 DI |
| Fieldbus | PROFINET EtherNet/IP Modbus TCP |
PROFINET EtherNet/IP |
| Output power | 3.6 A (Port 1–4) | 3.6 A (port 1+2) 3.6 A (port 3+4) |
| Current limitation | per module | per port (adjustable) |
| Current measurement |  |
|
| Counter function | CTU (Up Counter) CTD (Down Counter) CTUD (Up-Down Counter) CTDIR (Direction Counter) |
|
| Output switching function SSC (counter) |
one point two point window latch |
|
| Protection rating | IP67 (orange) IP69K (grey) |
|
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Material Connectors/sockets |
Nickel-plated brass (orange) Stainless steel (grey) |
|
Function and wiring of Ethernet Module DI/DO
Counter function
The modules with integrated counter function offer various counting modes that can be configured directly at the input. This allows pulses from sensors or switches to be recorded accurately, e.g. for piece counting, position detection or clock control. The maximum counting frequency is 4.500 Hz, so even high-frequency counting is no problem.
CTU (Up Counter)
Counts upwards with each pulse – ideal for counting workpieces or events.
CTD (Down Counter)
Counts down, e.g. from a defined number to 0 – useful for residual quantities or cycles.
CTUD (Up-Down Counter)
Counts up or down – depending on two different input signals.
CTDIR (Direction Counter)
Detects the counting direction (forward/backward), e.g. for conveyor belts or travel paths.
SSC output switching functions – respond instantly
With the Switching Signal Channel (SSC) function, outputs can be switched depending on the meter reading without a controller. This allows simple reactions to be implemented directly in the module.
One Point
The output switches at a specific counter value.
Two Point
The output switches on at a first value and off again at a second value – ideal for range control.
Window
The output is active as long as the counter reading is within a certain range of values.
Latch
The output is activated when a switching point is reached and remains active until it is reset manually or by another signal.
Coolant series - 8 digital inputs, 8 digital outputs
PROFINET - 8 digital inputs, 8 digital outputs
Food series - 8 digital inputs, 8 digital outputs
PROFINET - 8 digital inputs, 8 digital outputs