IFM AL4142 User manual

Operating instructions
Remote I/O module 16 DI
ModbusTCP
IP65 / IP66 / IP67
AL4142
11489162 / 0104 / 2023
GB

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Contents
1 Preliminary note ............................................................. 4
1.1 Legal and copyright information ............................................ 4
1.2 Symbols used.......................................................... 4
1.3 Warnings used ......................................................... 4
1.4 Safety symbol on the device............................................... 4
1.5 Change history......................................................... 5
2 Safety instructions............................................................ 6
2.1 Cyber security.......................................................... 6
3 Intended use................................................................ 7
4 Function ................................................................... 8
4.1 Visual indication ........................................................ 8
4.2 Parameter setting....................................................... 8
4.3 Inputs................................................................ 8
4.3.1 Sensor supply...................................................... 8
4.4 Digital input filters....................................................... 8
4.4.1 Debouncing........................................................ 9
4.4.2 Stretching......................................................... 9
4.4.3 Inverting .......................................................... 10
4.4.4 Filter combination................................................... 10
4.5 Counter............................................................... 10
4.5.1 Counter mode CTU.................................................. 10
4.5.2 Counter mode CTD.................................................. 11
4.5.3 Counter mode CTUD ................................................ 11
4.5.4 Counter mode CTDIR................................................ 12
4.6 Modbus TCP........................................................... 12
5 Installation.................................................................. 14
5.1 Overview.............................................................. 14
5.2 Install device........................................................... 14
6 Electrical connection.......................................................... 15
6.1 Overview.............................................................. 15
6.2 General wiring information ................................................ 15
6.2.1 Connection technology............................................... 15
6.3 Ethernet .............................................................. 16
6.4 Process connections..................................................... 16
6.5 Voltage supply ......................................................... 16
6.5.1 Derating behaviour.................................................. 17
6.5.1.1 Derating without daisy chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.5.1.2 Derating with daisy chain ........................................ 18
6.6 Voltage output.......................................................... 18
7 Operating and display elements................................................. 19
7.1 LEDs................................................................. 19
7.1.1 Status............................................................ 19
7.1.2 Ethernet .......................................................... 20
7.1.3 Voltage supply ..................................................... 20
7.1.4 Process connections................................................. 20
8 Set-up..................................................................... 21
9 Settings.................................................................... 22
9.1 Parameter setting software................................................ 22
9.1.1 Supported parameter setting software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
9.1.2 Getting started ..................................................... 22
9.1.3 Fieldbus: Configuring a ModbusTCP interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
9.1.4 Fieldbus: Reading the connection status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
9.1.5 Ports: Setting the arrangement of the digital inputs . . . . . . . . . . . . . . . . . . . . . . . . . . 24
9.1.6 Ports: Configuring input filters.......................................... 25
9.1.7 Ports: Reading digital input data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
9.1.8 Counter: Configuring counter modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

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9.1.9 Counter: Controlling counter modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
9.1.10 Counter: Reading counter values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
9.1.11 Gateway: Reading identification information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
9.1.12 Gateway: Reading status and diagnostic information . . . . . . . . . . . . . . . . . . . . . . . . 28
9.1.13 Gateway: Setting the application tag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
9.1.14 Firmware: Reading the firmware version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
9.1.15 Firmware: Resetting the device......................................... 29
9.1.16 Firmware: Restarting the device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
9.2 IoT-Core Visualizer...................................................... 30
9.2.1 Starting the ifm IoT Core Visualizer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
9.2.2 Searching elements of the IoT Core . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
9.2.3 Configuring the device ............................................... 32
9.2.3.1 Configuring a ModbusTCP interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
9.2.3.2 Setting the arrangement of the digital inputs . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9.2.3.3 Configuring input filters.......................................... 34
9.2.3.4 Configuring counter modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9.2.3.5 Reading device information....................................... 36
9.2.3.6 Reading the firmware version . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
9.2.3.7 Setting the application tag........................................ 36
9.2.4 Accessing process data .............................................. 37
9.2.4.1 Reading digital input data........................................ 37
9.2.4.2 Reading counter values ......................................... 38
9.2.4.3 Controlling counter modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
9.2.4.4 Reading status and diagnostic information . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
9.2.5 Update firmware.................................................... 39
9.3 ModbusTCP........................................................... 40
9.3.1 Integrating a device into a Modbus TCP project . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
9.3.1.1 Example: Integrating a device into a CODESYS project . . . . . . . . . . . . . . . . . 40
9.3.2 Device-specific notes ................................................ 41
9.3.2.1 Rules for accessing the Modbus register. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
9.3.2.2 Supported function codes........................................ 41
9.3.2.3 Exception codes............................................... 41
9.3.3 Configuring the device ............................................... 42
9.3.4 Configuring digital inputs.............................................. 42
9.3.5 Configuring counter modules .......................................... 42
9.3.6 Reading process data................................................ 42
9.3.7 Controlling counter modules........................................... 43
9.3.8 Controlling the device................................................ 43
9.3.9 Reading diagnostic data.............................................. 43
9.3.10 Reading identification information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
10 Maintenance, repair and disposal................................................ 45
10.1 Cleaning.............................................................. 45
10.2 Update firmware........................................................ 45
11 Appendix................................................................... 46
11.1 ModbusTCP ........................................................... 46
11.1.1 Register .......................................................... 46
11.1.1.1 Input data (0 - 34).............................................. 46
11.1.1.2 Port Configuration - Digital Inputs (100 - 163) . . . . . . . . . . . . . . . . . . . . . . . . . 48
11.1.1.3 Port Configuration - Counter (200 - 271) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
11.1.1.4 Port Output - Counter (300 - 355) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
11.1.1.5 Block Configuration (400 - 408). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
11.1.1.6 Byte Swap (500)............................................... 55
11.1.1.7 Connection Timeout (510)........................................ 56
11.1.1.8 DI Channel Mapping (550) ....................................... 57
11.1.1.9 System Command (600)......................................... 58
11.1.1.10 Diagnostic Data (2000 - 2002) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

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1 Preliminary note
You will find instructions, technical data, approvals and further information using the QR code on the
unit / packaging or at documentation.ifm.com.
1.1 Legal and copyright information
© All rights reserved by ifm electronic gmbh. No part of these instructions may be reproduced and
used without the consent of ifm electronic gmbh.
All product names, pictures, companies or other brands used on our pages are the property of the
respective rights owners.
1.2 Symbols used
Requirement
Instructions
Reaction, result
[...] Designation of keys, buttons or indications
Cross-reference
Important note
Non-compliance may result in malfunction or interference.
Information
Supplementary note
1.3 Warnings used
ATTENTION
Warning of damage to property
CAUTION
Warning of personal injury
wSlight reversible injuries may result.
WARNING
Warning of serious personal injury
wDeath or serious irreversible injuries may result.
1.4 Safety symbol on the device
Safety symbol on the device:
uAdhere to the operating instructions for the safe operation of the unit.

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1.5 Change history
Issue Subject Date
00 New creation of the document 11 / 2022
01 • Corrected: Chapter DI Channel Mapping (550) (Ò/57) 04 / 2023

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2 Safety instructions
• The unit described is a subcomponent for integration into a system.
– The system architect is responsible for the safety of the system.
– The system architect undertakes to perform a risk assessment and to create documentation in
accordance with legal and normative requirements to be provided to the operator and user of
the system. This documentation must contain all necessary information and safety instructions
for the operator, the user and, if applicable, for any service personnel authorised by the
architect of the system.
• Read this document before setting up the product and keep it during the entire service life.
• The product must be suitable for the corresponding applications and environmental conditions
without any restrictions.
• Only use the product for its intended purpose (Ò Intended use).
• If the operating instructions or the technical data are not adhered to, personal injury and/or damage
to property may occur.
• The manufacturer assumes no liability or warranty for any consequences caused by tampering with
the product or incorrect use by the operator.
• Installation, electrical connection, set-up, operation and maintenance of the product must be
carried out by qualified personnel authorised by the machine operator.
• Protect units and cables against damage.
• Replace damaged units, otherwise the technical data and safety will be impaired.
• Observe applicable documents.
2.1 Cyber security
ATTENTION
Operating the machine in an unprotected network environment
wUnauthorised read or write access to data is possible.
wUnauthorised manipulation of the device function is possible.
uCheck and restrict access options to the device.

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3 Intended use
The device may only be used for the following purposes:
• Gateway between digital sensors and a higher-level control system
The device is designed for use outside of a control cabinet.

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4 Function
4.1 Visual indication
The device displays the following indications:
• Status and error indication of the gateway and the system
• Status and activity indication of the Ethernet connection
• Status display of the voltage supply
• Status, error and short circuit/overload indication of the sensor ports
4.2 Parameter setting
The device can be configured using the following options:
• Parameter setting software
– ifmmoneo
– ifm moneo|configure SA
• ifm IoT Core
– IoT-Core Visualizer
• ModbusTCP
– Projection software
4.3 Inputs
The device has 8 ports. Each port has 2 digital inputs.
4.3.1 Sensor supply
The device has a total of 8 sensor supplies (1 sensor supply per port).
4.4 Digital input filters
The device pre-processes the digital input signals. The filter result is forwarded as a process value.
The following filters can be applied to the input signals in the sequence specified.
1. Debouncing
2. Stretching
3. Inverting
Digital input Debouncing Stretching Inverting
Counter input
Process data
Filter module
Each filter can be configured separately.
The device detects signals of a length of min. 0.23 ms. Shorter signals are not detected.

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Periodic signals are only detected reliably if the signal period is at least twice as long as the
cycle time.
4.4.1 Debouncing
The filter suppresses noise signals. The filter provides the input signals at the filter output with a delay
(debounce time). All signals shorter than the set debounce time are ignored by the filter.
Time diagram debounce filter:
2
11 11
0
1
0
1
0
1
t
Process data
Filter output
Filter input
1: Debounce time
2: Cycle time
4.4.2 Stretching
The filter stretches short input pulses. Level changes that occur during a stretching period are ignored.
The filter is configured via the following parameters:
• Hold time: pulse duration to which short pulses are to be stretched. Pulses that are present for a
longer time than the hold time are not stretched.
• Hold level: signal level to be stretched (HIGH or LOW)
Time diagram stretch filter (status HIGH):
2
1 1 1
0
1
0
1
0
1
t
Process data
Filter output
Filter input
1: Hold time
2: Cycle time
Time diagram stretch filter (status LOW):
2
1 1 1
0
1
0
1
0
1
t
Filter input
Filter output
Process data
1: Hold time
2: Cycle time

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4.4.3 Inverting
The filter inverts signals.
4.4.4 Filter combination
The filters can be combined.
Example: All 3 filters are activated
Time diagram:
0
1
0
1
0
1
0
1
0
1
t
1
Digital input
Filter Debounce
Filter Hold
Filter Inverter
Process data
Digitaleingang
Filter Entprellen
Filter Halten
Filter Invertieren
Prozessdaten
1: Cycle time
4.5 Counter
The device features one counter module per port.
A counter module consists of 2 separate counters:
• Main counter: The main counter counts the rising edges of the filtered digital input signals. The
main counter has a value range that is defined by a threshold value. If the value range of the main
counter is exceeded or not reached, an overflow or underflow signal is sent to the batch counter.
• Batch counter: The batch counter counts the overflow or underflow signals of the main counter.
Filter module pin 4
Filter module pin 2
Count input
Count input/
control input
Main counter
Batch counter
Process data
Process data
Counter module
A counter module can be operated in different operating modes. The following operating modes are
available.
4.5.1 Counter mode CTU
In CTU (Count Up) mode, the counter module operates as an up counter with overflow detection and
overflow counter.
Behaviour:
• The initial value of the main counter is m = 0. The initial value of the batch counter is b = 0. The
main counter has a threshold value CT. The batch counter has a threshold value CTb.

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• If the counter module detects a positive edge at pin 4 of the port, the value of the main counter is
incremented (m = m+1).
• If the main counter reaches the threshold value CT (m = CT), the counter value is reset (m = 0).
Due to the overflow detection, the value of the batch counter is incremented (b = b+1).
• If the batch counter reaches the threshold value CTb (b = CTb), the counter value is reset (b = 0).
CTb
CT
0
0
t
Main Counter
Batch Counter
4.5.2 Counter mode CTD
In CTD (Count Down) mode, the counter module operates as a down counter with underflow detection
and underflow counting.
Behaviour:
• The initial value of the main counter is m = 0. The initial value of the batch counter is b = 0. The
main counter has a threshold value CT. The batch counter has a threshold value CTb.
• The first time a positive edge is detected at pin 4, the value of the main counter is set to the
threshold value CT-1 (m = CT-1). At the same time, the value of the batch counter is set to the
threshold value CTb-1 (b = CTb-1).
• If the counter module detects a positive edge at pin 4 of the port, the value of the main counter is
decremented (m = m-1).
• If the main counter falls below 0, the counter value is reset to the threshold value (m = CT-1). Due
to the underflow detection, the value of the batch counter is decremented (b = b-1).
• If the batch counter falls below 0, the counter value is reset to the threshold value (b = CTb-1).
CTb
CT
0
0
t
Main Counter
Batch Counter
4.5.3 Counter mode CTUD
In CTUD (Count Up Down) mode, the counter operates as a simultaneous up and down counter with
overflow and underflow detection.
Behaviour:
• The initial value of the main counter is m = 0. The initial value of the batch counter is b = 0. The
main counter has a threshold value CT. The batch counter has a threshold value CTb.
• If the counter module detects a positive edge at pin 4 of the port, the value of the main counter is
incremented (m = m+1).
• If the counter module detects a positive edge at pin 2 of the port, the value of the main counter is
decremented (m = m-1).

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• If the counter module simultaneously detects a positive edge at pin 4 and pin 2 of the port, the
counter value of the main counter does not change.
• If the main counter reaches the threshold value CT (m = CT), the counter value is reset (m = 0).
Due to the overflow detection, the value of the batch counter is incremented (b = b+1).
• If the main counter falls below 0, the counter value is reset to the threshold value (m = CT-1). Due
to the underflow detection, the value of the batch counter is decremented (b = b-1).
• If the batch counter reaches the threshold value CTb (b = CTb), the counter value is reset (b = 0).
• If the batch counter falls below 0, the counter value is reset to the threshold value (b = CTb-1).
CTb
CT
0
0
t
Main Counter
Batch Counter
4.5.4 Counter mode CTDIR
In CTDIR (Count Direction) mode, the counter module operates either as an up counter with overflow
detection or as a down counter with underflow detection. The counting direction can be set.
Behaviour:
• The initial value of the main counter is m = 0. The initial value of the batch counter is b = 0. The
main counter has a threshold value CT. The batch counter has a threshold value CTb.
• The user can determine the counting direction. The counter module initially operates as an up
counter with overflow detection.
• If the counter module detects a positive edge at pin 4 of the port and the counting direction of the
port is set to “up”, the value of the main counter is incremented (m = m+1).
• If the main counter reaches the threshold value CT (m = CT), the counter value is reset (m = 0).
Due to the overflow detection, the value of the batch counter is incremented (b = b+1).
• If the batch counter reaches the threshold value CTb (b = CTb), the counter value is reset (b = 0).
• If the counter module detects a positive edge at pin 4 of the port and the counting direction at pin 2
of the port is set to “down”, the value of the main counter is decremented (m = m-1).
• If the main counter falls below 0, the counter value is reset to the threshold value (m = CT-1). Due
to the underflow detection, the value of the batch counter is decremented (b = b-1).
• If the batch counter falls below 0, the counter value is reset to the threshold value (b = CTb-1).
CTb
CT
0
0
t
Main Counter
Batch Counter
4.6 Modbus TCP
The device offers the following Modbus TCP functions:

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• Device profile: Modbus TCP Server (message mode)
• 2-port switch for access to Modbus TCP interface (XF1 / XF2)

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5 Installation
5.1 Overview
2
1
1: Upper mounting lug
2: Lower mounting lugs lug
5.2 Install device
uDisconnect the power of the machine before installation.
uUse a flat mounting surface for installation.
uPlease observe the maximum tightening torque.
Fasten the device onto the mounting surface using 2 M5 mounting screws and washers (tightening
torque: 1.8Nm).

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6 Electrical connection
6.1 Overview
XF2
X2
X4
X6
X8
X7
X5
X3
X1
XD1
XF1
XD2
XF1: Ethernet 1 (ModbusTCP)
XF2: Ethernet 2 (ModbusTCP)
XD1: Power IN
XD2: Power OUT
X1: Process connection 1 (sensor)
X2: Process connection 2 (sensor)
X3: Process connection 3 (sensor)
X4: Process connection 4 (sensor)
X5: Process connection 5 (sensor)
X6: Process connection 6 (sensor)
X7: Process connection 7 (sensor)
X8: Process connection 8 (sensor)
6.2 General wiring information
The device must be connected by a qualified electrician.
uObserve the national and international regulations for the installation of electrical equipment.
The device is only suitable for operation using SELV/PELV voltages.
This device contains components that may be damaged or destroyed by electrostatic discharge
(ESD).
uPlease observe the required precautions against electrostatic discharge!
The circuits are insulated from each other and from touchable surfaces of the device with basic
insulation according to EN61010-1.
The communication interfaces are insulated from each other and from touchable surfaces of the
device with basic insulation according to EN61010-1.
6.2.1 Connection technology
The threaded connections in the device correspond to the M12 standard. To ensure compliance with
the specified protection rating, only cables that comply with this standard may be used. In the case of
self-assembled cables, the system manufacturer is responsible for the protection rating.
uUse connectors with gold-plated contacts.
uDuring installation, place the connectors vertically so that the coupling nut will not damage the
thread.
uObserve the coding of the connectors during installation.
uCover unused connections with protective covers. Tightening torque: 1.3 ± 0.1Nm

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6.3 Ethernet
The device is connected to the ModbusTCP network via the Ethernet ports XF1 / XF2 (e.g.
ModbusTCP control, additional ModbusTCP device). In addition, the device can be connected to an IT
network via the Ethernet ports. The user can access functions of the ifm IoT Core via the IT network
(parameter setting software, IoT Core Visualizer).
uConnect the device to the ModbusTCP network via a free Ethernet port.
uOptional: Connect the device to the IT network via a free Ethernet port.
uFor connection, use an M12 connector (with at least protection rating: IP65 / IP66 / IP67).
uTighten the cable plug using 1.3 ± 0.1Nm.
Wiring:
1 2
34
5
1: TX+
2: RX+
3: TX-
4: RX-
5: not used
6.4 Process connections
The sensors are connected to the device via the process connections.
The total current supply of the ports X1...X8 is limited to 3.6 A.
The ports feature short-circuit/ overload detection.
uConnect the sensors to ports X1...X8.
uFor connection, use M12 connectors (with at least protection rating: IP65 / IP66 / IP67; max. cable
length: 30m).
uTighten the cable plug using 1.3 ± 0.1Nm.
Wiring:
3
1 2
4
5
1: sensor supply L+ (US)
2: digital output 2 (DI2)
3: sensor supply L- (US)
4: digital output 1 (DI1)
5: functional earth (FE)
6.5 Voltage supply
The device is connected to the supply voltage US via the power IN port.
The US supply voltage supplies the device and the sensors connected to the ports X1...X8 with
voltage.
Optionally, an additional supply voltage UA can be fed to the device via the power IN port. US is
looped through to the power OUT port. UA is used exclusively to supply additional devices via the
power OUT port (daisy chain).
Port XD1 has overvoltage protection (US).
Port XD1 has reverse polarity protection (US).
The port XD1 has cross reverse polarity protection (US, UA).

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CAUTION
Exceeding the maximum input current of 16 A
wRisk of fire
uIU and IA of the supply voltages US and UA accordingly, taking into account the derating
behaviour of the device: Derating behaviour (Ò/17)
uDisconnect power.
uConnect the device via port XD1 to the US supply voltage with 24VDC (20…30V SELV/PELV).
uOptional: Connect the device via port XD1 to the UA supply voltage with 24VDC (20…30V SELV/
PELV).
uFor connection, use an L-coded M12 connector (with at least protection rating: IP65 / IP66 / IP67).
uTighten the cable sockets according to the torque specifications indicated by the cable
manufacturer. Maximum permissible tightening torque: 0.8Nm
Wiring:
3
1 4
2
5
1: +24V DC (US)
2: GND (UA)
3: GND (US)
4: +24V DC (UA)
5: FE
6.5.1 Derating behaviour
The current IUS available at ports X1...X8 and the currents IUS-daisy-chain and IUA-daisy-chain available at port
XD2 depend on the ambient temperature of the device.
6.5.1.1 Derating without daisy chain
-40 -30 -20 -10 0 10 20 30 40 50 60 70
1
2
3
4
2000 m
3000 m
4000 m
Current [A]
Temperature [°C]
0.5
1.5
2.5
3.5
1

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6.5.1.2 Derating with daisy chain
-40 -30 -20 -10 0 10 20 30 40 50 60 70
1
2
3
4
2000 m
3000 m
4000 m
Current [A]
Temperature [°C]
0.5
1.5
2.5
3.5
1
-40 -30 -20 -10 0 10 20 30 40 50 60 70
2
4
6
8
10
12
14
16
18 2000 m
3000 m
4000 m
Current [A]
Temperature [°C]
2
1
Example: derating (2000m)
Temperature IUA-daisy-chain (XD2) IUSmax (XD1) IUS (X1…X8) IUS-daisy-chain (XD2)
30°C 16 A 15.9 A 3.9 A 12 A
30°C 0 A 15.9 A
30°C 1.8 A 14.1 A
60°C 8 A 8 A 2 A 6 A
60°C 0 A 8 A
60°C 1 A 7 A
Explanation: The current IUSmax at port XD1 is the sum of the currents IUS taken from ports X1…X8 and
the current IUS-daisy-chain taken from port XD2 for the supply of further devices.
Formula: IUSmax (XD1) = IUS (X1…X8) + IUS-daisy-chain (XD2)
The less current is consumed at ports X1...X8, the more current will be available to supply further
devices via daisy chain through port XD2.
6.6 Voltage output
An additional device can be supplied via the power OUT port (daisy chain). The supply voltages US
and UA are looped through from port XD1 to port XD2.
Max. current of US: 15.9 A
Max. current of UA: 16 A
uOptional: Connect an additional device to port XD2.
uFor connection, use an L-coded M12 connector (with at least protection rating: IP65 / IP66 / IP67).
uTighten the cable plug using 1.3 ± 0.1Nm.
uObserve the derating behaviour of the device (Ò Derating behaviour/17)!
Wiring:
2
4 1
3
5
1: +24V DC (US)
2: GND (UA)
3: GND (US)
4: +24V DC (UA)
5: FE

Remote I/O module 16 DI AL4142
19
7 Operating and display elements
7.1 LEDs
2 3
4
5
8
1
4
5
6
6
6
66
6
6
6
7
7
7
77
7
7
7
1: status: RDY
2: status: ERR
3: status: RUN
4: Modbus TCP: LNK
5: Modbus TCP: ACT
6: Process connection: DI1
7: Process connection: DI2
8: Voltage supply: US
7.1.1 Status
LED Description Colour State Description
RDY Gateway status - Off Not active or reboots
Green Flashes 3s (1Hz) DCP signalling service initiated via fieldbus
Flashes (5Hz) Error
Flashes (200ms
on, 800ms off)
Firmware update running
On OK
red On Error during firmware update (e.g. firmware not compatible)
ERR Error indication red Off No error
Flashes (10Hz) Boot error
flashes (200 ms
on, 200 ms off,
200 ms on, 1000
ms off)
Watchdog error (Modbus TCP or process data)
flashes (200ms
on, 1000ms off)
local error
Flashes (2.5Hz) invalid configuration
On Communication error
RUN Modbus TCP state
(state machine)
Green Off not ready
Flashes (1Hz) ready, but not yet configured
Flashes (5Hz) waiting for connection
On connection established