Phoenix Contact UM EN AXL F PSDI8/4 1F User manual

User manual
Axioline F safety module with
safe digital inputs
UM EN AXL F PSDI8/4 1F

2016-11-22
PHOENIX CONTACT 105738_en_04
Axioline F safety module with safe digital inputs
UM EN AXL F PSDI8/4 1F
04
-
Designation From HW/FW
revision
Order No.
AXL F PSDI8/4 1F 01/220 2701559
User manual
Designation:
Revision:
Order No.:
This user manual is valid for:

PHOENIX CONTACT
Please observe the following notes
User group of this manual
The use of products described in this manual is oriented exclusively to:
– Qualified electricians or persons instructed by them, who are familiar with applicable
standards and other regulations regarding electrical engineering and, in particular, the
relevant safety concepts.
– Qualified application programmers and software engineers, who are familiar with the
safety concepts of automation technology and applicable standards.
Explanation of symbols used and signal words
How to contact us
Internet Up-to-date information on Phoenix Contact products and our Terms and Conditions can be
found on the Internet at:
phoenixcontact.com
Make sure you always use the latest documentation.
It can be downloaded at:
phoenixcontact.net/products
Subsidiaries If there are any problems that cannot be solved using the documentation, please contact
your Phoenix Contact subsidiary.
Subsidiary contact information is available at phoenixcontact.com.
Published by PHOENIX CONTACT GmbH & Co. KG
Flachsmarktstraße 8
32825 Blomberg
GERMANY
Should you have any suggestions or recommendations for improvement of the contents and
layout of our manuals, please send your comments to:
[e-mail]
This is the safety alert symbol. It is used to alert you to potential personal injury
hazards. Obey all safety measures that follow this symbol to avoid possible
injury or death.
There are three different categories of personal injury that are indicated with a
signal word.
DANGER This indicates a hazardous situation which, if not avoided, will
result in death or serious injury.
WARNING This indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION This indicates a hazardous situation which, if not avoided, could
result in minor or moderate injury.
This symbol together with the signal word NOTE and the accompanying text
alert the reader to a situation which may cause damage or malfunction to the
device, hardware/software, or surrounding property.
This symbol and the accompanying text provide the reader with additional
information or refer to detailed sources of information.

Please observe the following notes
PHOENIX CONTACT
General terms and conditions of use for technical documentation
Phoenix Contact reserves the right to alter, correct, and/or improve the technical
documentation and the products described in the technical documentation at its own
discretion and without giving prior notice, insofar as this is reasonable for the user. The
same applies to any technical changes that serve the purpose of technical progress.
The receipt of technical documentation (in particular user documentation) does not
constitute any further duty on the part of Phoenix Contact to furnish information on
modifications to products and/or technical documentation. You are responsible to verify the
suitability and intended use of the products in your specific application, in particular with
regard to observing the applicable standards and regulations. All information made
available in the technical data is supplied without any accompanying guarantee, whether
expressly mentioned, implied or tacitly assumed.
In general, the provisions of the current standard Terms and Conditions of Phoenix Contact
apply exclusively, in particular as concerns any warranty liability.
This manual, including all illustrations contained herein, is copyright protected. Any
changes to the contents or the publication of extracts of this document is prohibited.
Phoenix Contact reserves the right to register its own intellectual property rights for the
product identifications of Phoenix Contact products that are used here. Registration of such
intellectual property rights by third parties is prohibited.
Other product identifications may be afforded legal protection, even where they may not be
indicated as such.

Table of contents
105738_en_04 PHOENIX CONTACT 5
Table of contents
1 For your safety............................................................................................................................9
1.1 General safety notes.............................................................................................. 9
1.2 Electrical safety ................................................................................................... 10
1.3 Safety of the machine or system.......................................................................... 11
1.4 Directives and standards ..................................................................................... 11
1.5 Intended use ....................................................................................................... 11
1.6 Documentation .................................................................................................... 12
1.7 Abbreviations used ............................................................................................ 12
1.8 Safety hotline....................................................................................................... 12
2 Product description...................................................................................................................13
2.1 Short description of the module........................................................................... 13
2.2 Structure of the module ....................................................................................... 14
2.3 Housing dimensions ............................................................................................ 14
2.4 Safe digital inputs and clock outputs T1 and T2 .................................................. 15
2.4.1 Safe digital inputs ................................................................................. 15
2.4.2 Clock outputs T1 and T2 ...................................................................... 16
2.5 Connection options for sensors depending on the parameterization ................... 18
2.6 Local diagnostics and status indicators ............................................................... 19
2.7 Safe state ............................................................................................................ 21
2.7.1 Operating state .................................................................................... 21
2.7.2 Error detection in I/O devices ............................................................... 21
2.7.3 Device errors ....................................................................................... 22
2.7.4 Parameterization errors ........................................................................ 22
2.8 Programming data/configuration data.................................................................. 22
3 Integration of the Axioline F local bus .......................................................................................23
3.1 Supply voltage of the module logic ...................................................................... 23
3.2 Supply voltage UI................................................................................................. 23
3.3 DC distribution network according to IEC 61326-3-1........................................... 24
3.4 Terminal point assignment................................................................................... 25

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6PHOENIX CONTACT 105738_en_04
4 Assembly, removal, and electrical installation ..........................................................................27
4.1 Assembly and removal ........................................................................................ 27
4.1.1 Unpacking the module ......................................................................... 27
4.1.2 Preparation and assembly ................................................................... 27
4.1.3 Setting the DIP switch .......................................................................... 28
4.1.4 Mounting and removing modules ........................................................ 29
4.2 Electrical installation ............................................................................................ 31
4.2.1 Electrical installation of the Axioline F station ....................................... 31
4.2.2 Electrical installation of the module ...................................................... 31
5 Parameterization of the module ................................................................................................33
5.1 Setting the F-Parameters and i-Parameters......................................................... 33
5.2 Parameterization of the safe inputs...................................................................... 34
6 Duration of a safety demand.....................................................................................................37
7 Connection examples for safe inputs ........................................................................................39
7.1 Explanation of the examples................................................................................ 39
7.2 Measures to achieve a specific safety integrity.................................................... 40
7.3 Single-channel assignment of safe inputs ........................................................... 42
7.3.1 Notes ................................................................................................... 42
7.3.2 Cross-circuit monitoring enabled ......................................................... 42
7.3.3 Cross-circuit monitoring disabled, supply through T1 .......................... 44
7.3.4 Supply through OSSD .......................................................................... 46
7.4 Two-channel equivalent assignment of safe inputs ............................................. 48
7.4.1 Notes on errors .................................................................................... 50
7.4.2 Cross-circuit monitoring enabled, supply through T1 and T2 .............. 51
7.4.3 Cross-circuit monitoring disabled, supply through a clock
output or external supply ...................................................................... 53
7.4.4 External supply (OSSD) ....................................................................... 55
7.5 Two-channel non-equivalent assignment of safe inputs ...................................... 57
7.5.1 Notes on errors .................................................................................... 59
7.5.2 Cross-circuit monitoring enabled, supply through T1 and T2 ............... 60
7.5.3 Cross-circuit monitoring disabled, supply through a clock
output or external supply ...................................................................... 61

Table of contents
105738_en_04 PHOENIX CONTACT 7
8 Startup and validation ...............................................................................................................65
8.1 Initial startup ........................................................................................................ 65
8.1.1 Startup mode ....................................................................................... 66
8.2 Restart after replacing a module.......................................................................... 67
8.2.1 Replacing a module ............................................................................. 67
8.2.2 Restart ................................................................................................. 67
8.3 Validation............................................................................................................. 67
9 Errors: messages and removal .................................................................................................69
9.1 Reading diagnostic messages............................................................................. 69
9.1.1 DiagState object 0x0018 ...................................................................... 71
9.1.2 DiagStateChannelNo object 0x0033 .................................................... 71
9.1.3 DiagStateAddValue object 0x0034 ...................................................... 72
9.1.4 ResetDiag object 0x0019 ..................................................................... 72
9.1.5 Examples for reading a diagnostic message ........................................ 73
9.2 Error codes.......................................................................................................... 74
9.2.1 Safe digital input errors ........................................................................ 75
9.2.2 Clock output errors ............................................................................... 77
9.2.3 Supply voltage errors ........................................................................... 77
9.2.4 Parameterization errors ........................................................................ 78
9.2.5 General errors ...................................................................................... 79
9.3 PROFIsafe errors................................................................................................. 80
9.4 Acknowledging an error for PROFIsafe ............................................................... 80
10 Maintenance, repair, decommissioning, and disposal ..............................................................81
10.1 Maintenance........................................................................................................ 81
10.2 Repair.................................................................................................................. 81
10.3 Decommissioning and disposal........................................................................... 81
11 Technical data and ordering data .............................................................................................83
11.1 PROFIsafe system data....................................................................................... 83
11.2 AXL F PSDI8/4 1F module data........................................................................... 83
11.3 Conformance with EMC Directive........................................................................ 87
11.4 Ordering data and download data ....................................................................... 87
11.4.1 Ordering data: module ......................................................................... 87
11.4.2 Download data: documentation ........................................................... 87
11.4.3 Download data: software ..................................................................... 88

AXL F PSDI8/4 1F
8PHOENIX CONTACT 105738_en_04
A Appendix: glossary for PROFIsafe............................................................................................89
B Appendix: F-Parameters and i-Parameters...............................................................................91
B 1 F-Parameters...................................................................................................... 91
B 2 i-Parameters....................................................................................................... 92
B 3 Diagnostic messages for parameter errors for PROFIsafe ................................. 93
C Appendix: index ........................................................................................................................95
D Appendix: checklists.................................................................................................................97
D 1 Planning ........................................................................................................... 98
D 2 Assembly and electrical installation ............................................................... 99
D 3 Startup and parameterization ....................................................................... 100
D 4 Validation ........................................................................................................ 101
E Appendix: revision history.......................................................................................................103

For your safety
105738_en_04 PHOENIX CONTACT 9
1Foryoursafety
Purpose of this user manual
This user manual provides information about how the module works, its operating and
connection elements, and its parameter settings.
Validity of the user manual
This user manual is valid for the AXL F PSDI8/4 1F module in the version indicated on the
inner cover page, as well as for the same or later versions if replaced with devices of the
same type.
1.1 General safety notes
Qualified personnel In terms of this user manual, qualified personnel are persons who, because of their
education, experience and instruction, and their knowledge of relevant standards,
regulations, accident prevention, and service conditions, have been authorized to carry out
any required operations, and who are able to recognize and avoid any possible dangers.
Furthermore, knowledge of the following topics and products is required:
– Non-safety-related target system (e.g., PROFIBUS, PROFINET)
–PROFIsafe
–Componentsused
– Axioline F product range
– Operation of the software tools
– Safety regulations in the field of application
In the context of the use of the PROFIsafe system, the following operations must only be
carried out by qualified personnel:
– Planning
– Configuration, parameterization, programming
– Installation, startup, servicing
– Maintenance, decommissioning
Documentation Observe all information in this user manual and the accompanying documents: see
Section 1.6 “Documentation” on page 12.
Safety of personnel and
equipment
The safety of personnel and equipment can only be assured if the module is used correctly:
see Section 1.5 “Intended use” on page 11.
Error detection Depending on the wiring and the parameterization, the module detects errors within the
safety equipment.
WARNING: Risk of injury
Depending on the application, inappropriate use of the module may result in serious injury.
•Observe all the safety notes and warning instructions provided in this section and
elsewhere in this user manual.

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10 PHOENIX CONTACT 105738_en_04
Do not carry out
any repairs or
modifications
It is prohibited for the user to carry out repair work or make modifications to the module. The
housing must not be opened. The module is protected against tampering by means of
security labels. The security label is damaged in the event of unauthorized repairs or
opening of the housing. In this case, the correct operation of the safety module can no
longer be ensured.
In the event of an error, send the module to Phoenix Contact or contact Phoenix Contact
immediately and engage a service engineer.
Mismatching and polarity
reversal of connections
Take care to avoid the mismatching, polarity reversal or tampering of connections. For
increased protection against mismatching, connectors and slot markings are color coded.
1.2 Electrical safety
Direct/indirect contact Protection against direct and indirect contact according to VDE 0100 Part 410 must be
ensured for all components connected to the system. In the event of an error, parasitic
voltages must not occur (single-fault tolerance).
Measures required:
– Using power supply units with safe isolation (PELV).
– Decoupling circuits, which are not PELV systems, using optocouplers, relays, and other
components which meet the requirements of safe isolation.
Power supply units for
24 V supply
Only use power supply units with safe isolation and PELV according to EN 50178/VDE 0160
(PELV). These power supply units prevent short circuits between the primary and
secondary side.
Make sure that the output voltage of the power supply does not exceed 32 V even in the
event of an error.
Insulation rating When selecting the equipment, please take into consideration the dirt and surge voltages
which may occur during operation.
The module is designed for overvoltage category II (according to DIN EN 60664-1). If you
expect surge voltages in the system, which exceed the values defined in overvoltage
category II, implement additional measures for voltage limitation.
WARNING: Loss of safety function/hazardous shock currents
Incorrect installation can result in the loss of the safety function as well as hazardous shock
currents.
•Observe the notes on electrical safety.
•Plan the modules used and their installation in the system according to the specific
requirements.
•Recheck plants and systems retrofitted with PROFIsafe.

For your safety
105738_en_04 PHOENIX CONTACT 11
1.3 Safety of the machine or system
The machine/system manufacturer and the operator are responsible for the safety of the
machine or system and the application in which the machine or system is used.
Draw up and implement a
safety concept
In order to use the module, a safety concept is required for your machine or system. This
includes a hazard and risk analysis as well as a test report (checklist) for validating the
safety function: see Section 1.4 “Directives and standards” on page 11 and see Section D
“Appendix: checklists” on page 97.
The target safety integrity (SIL according to IEC 61508, SILCL according to EN 62061 or
performance level and category according to EN ISO 13849-1) is ascertained on the basis
of the risk analysis. The safety integrity ascertained determines how to connect and
parameterize the module within the safety function.
Validate hardware and
parameterization
Carry out a validation every time you make a safety-related modification to your overall
system.
Use your test report to ensure that:
– The safe modules are connected to the correct sensors and actuators
– The safe input and output channels have been parameterized correctly
– The variables have been linked to the safe sensors and actuators correctly (single-
channel or two-channel)
1.4 Directives and standards
The standards to which the module conforms are listed in the certificate issued by the
approval body and in the EC declaration of conformity (see: phoenixcontact.net/products).
1.5 Intended use
The AXL F PSDI8/4 1F module is designed exclusively for use in a PROFIsafe system. It
can only perform its tasks in the system if it is used according to the specifications in this
document.
Only use the module according to the defined technical data and ambient conditions: see
Section 11 “Technical data and ordering data” on page 83.
The module is designed for connecting single-channel or two-channel sensors, which can
be used in association with safety technology.
Examples of use for the module:
– Single or two-channel emergency stop equipment or safety door equipment
– Applications with enable button
– Applications with two-hand control devices
– Applications with mode selector switches
– As secondary switchgear for safety-related photoelectric barriers
– Safety circuits according to EN 60204, Part 1

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12 PHOENIX CONTACT 105738_en_04
1.6 Documentation
Currentness and
availability of
documentation
Always use the latest documentation. Changes or additions to documentation can be found
on the Internet (see: phoenixcontact.net/products).
PROFIsafe user manuals User manuals:
– For the safe controller used
– For the failsafe PROFIsafe I/O modules used
– For PROFIsafe system function blocks
Observe the information on PROFIBUS, PROFINET, and PROFIsafe which is available on
the Internet (see: profisafe.net).
Documentation for the
Axioline F product range
Axioline F: system and installation user manual, UM EN AXL F SYS INST
Documentation for the bus coupler used
1.7 Abbreviations used
1.8 Safety hotline
Should you have any technical questions, please contact our 24-hour hotline.
Phone: + 49 5281 9-46277, e-mail: safety-serv[email protected]
Table 1-1 Abbreviations for safety requirements
Abbreviation Meaning Standard Example
SIL Safety integrity level IEC 61508 SIL 2, SIL 3
SILCL SIL claim limit EN 62061 SILCL 3
Cat. Category EN ISO 13849-1 Cat. 2, Cat. 4
PL Performance level EN ISO 13849-1 PL e, PL d
Table 1-2 General abbreviations
Abbreviation Meaning
PELV Protective extra-low voltage according to EN 50178/VDE 0160
EUC Equipment under control
Explanations of terms and abbreviations used in the context of PROFIsafe: see
“Appendix: glossary for PROFIsafe” on page 89.

Product description
105738_en_04 PHOENIX CONTACT 13
2 Product description
2.1 Short description of the module
The AXL F PSDI8/4 1F module is an input module for use in an Axioline F station at any point
in a PROFIsafe system.
The PROFIsafe address is set via a DIP switch.
The module has four safe digital inputs for two-channel assignment or eight safe digital
inputs for single-channel assignment.
The inputs can be parameterized according to the specific application and enable the
integration of sensors in the safe PROFIsafe system.
In the PROFIsafe system, the module can be used to achieve safety functions with the
following requirements depending on the operating conditions:
– Up to SIL 3 according to IEC 61508
– Up to SILCL 3 according to EN 62061
– Up to Cat. 4/PL e according to EN ISO 13849-1

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14 PHOENIX CONTACT 105738_en_04
2.2 Structure of the module
Figure 2-1 Structure of the module
1Bus base module
2Electronics module
3Connector for connecting the supply voltage
4Function identification
5I/O connector
6Diagnostics and status indicators
7DIP switch
2.3 Housing dimensions
Figure 2-2 Housing dimensions (in mm)
1
4
2
3
65
7
More detailed information on setting the switch: see Section 4.1.3 “Setting the DIP switch”
on page 28.
53.6 54
122.4 126.1

Product description
105738_en_04 PHOENIX CONTACT 15
2.4 Safe digital inputs and clock outputs T1 and T2
2.4.1 Safe digital inputs
The module has safe digital inputs which can be used as follows:
– For two-channel assignment: four two-channel inputs
– For single-channel assignment: eight single-channel inputs
Technical data for the safe inputs: see “Safe digital inputs” on page 85. The supply voltage
for the inputs can be provided externally or via the clock outputs.
Parameterization The safe digital inputs of the module can be parameterized in pairs. This means that the
inputs can be adapted to various operating conditions and different safety integrity levels
can be implemented (SIL, SILCL, Cat., PL).
Information on the parameterization of the inputs: see Section 5.2 “Parameterization of the
safe inputs” on page 34.
Diagnostics Diagnostics are provided via both the local diagnostics indicators and the diagnostic
messages which are transmitted to the controller.
Information on the diagnostic messages of the inputs: see Section 9 “Errors: messages and
removal” on page 69.
Requirements for
sensors/controlling
devices
Functional safety places requirements on the design of sensors/controlling devices.
•Use suitable sensors/controlling devices which are described in the applicable safety
standards, for example.
The module's ability to detect errors depends on the parameterization.
•Adapt the module parameterization to the relevant sensor/controlling device: see
Section 5 “Parameterization of the module” on page 33.
The safety integrity (SIL, SILCL, Cat., PL) and error detection that can be achieved
depend on the parameterization, the structure of the sensor, and the cable installation: see
Section 7 “Connection examples for safe inputs” on page 39.
WARNING: Loss of safety function
Using diagnostic data for safety-related functions can result in the loss of the safety
function as diagnostic data is not safety-related.
•Do not use the diagnostic data for safety-related functions or actions.

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2.4.2 Clock outputs T1 and T2
The module has two independent clock outputs. These clock outputs provide the supply
voltage for the safe inputs. Both clock outputs provide a pulse pattern to detect cross-
circuits in the external wiring of the inputs if cross-circuit monitoring has been activated for
at least one input pair.
Typical pulse pattern
Figure 2-3 Typical pulse pattern
Key:
Technical data for the clock outputs: see “Clock outputs” on page 86.
Behavior in the event of an
error
In the event of short circuit to GND or overload of the clock outputs, the clock outputs are
switched off. A diagnostic message is generated and the message is indicated via the SD
LED. This error must be acknowledged so that the system can be started up again following
error removal, see Section 9 “Errors: messages and removal” on page 69.
As there are two clock outputs for eight inputs, there may be reciprocal effects between the
inputs.
TTestpulse
Pulse width ≤1ms
Period length ≤40 ms
0
1
T1
10 20 30 40 50 60 70 80 90 100 110
1 ms
T1 ms T1 ms T
t [ms]
0
1
T2
10 20 30 40 50 60 70 80 90 100 110
1 ms
T1 ms T1 ms T
t [ms]
The clock outputs are also switched on and monitored when the module is not
parameterized. If a short circuit occurs at a clock output when it is in this state, the clock
output is switched off.

Product description
105738_en_04 PHOENIX CONTACT 17
Diagnostics
Diagnostics are provided via both the local diagnostics indicators and the diagnostic
messages which are transmitted to the controller.
Information on the diagnostic messages of the clock outputs: see Section 9.2.4
“Parameterization errors” on page 78.
Cross-circuit monitoring If all inputs are parameterized without cross-circuit monitoring, a DC voltage can be tapped
at the clock outputs without clock pulses. As soon as cross-circuit monitoring has been
parameterized for at least one input pair, pulses are output at clock outputs T1 and T2.
For inputs that are parameterized with cross-circuit monitoring, the assignment is as
follows:
– Inputs for channel 1 (INx_CH1) are assigned to clock output T1.
– Inputs for channel 2 (INx_CH2) are assigned to clock output T2.
Observe the information on error detection according to clocking: see Section 2.4.2 “Clock
outputs T1 and T2” on page 16.
WARNING: Loss of safety function
Using diagnostic data for safety-related functions can result in the loss of the safety
function as diagnostic data is not safety-related.
•Do not use the diagnostic data for safety-related functions or actions.

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2.5 Connection options for sensors depending on the
parameterization
Sensors that meet various safety requirements depending on the parameterization can be
connected to the inputs.
The maximum achievable SIL/SILCL/Cat./PL is specified in the table.
In order to meet the safety requirements:
•Observe the information in the connection examples: see Section 7 “Connection
examples for safe inputs” on page 39.
•Observe the requirements of the standards with regard to the external wiring and the
sensors to be used to achieve a SIL/SILCL/Cat./PL: see Section 7.2 “Measures to
achieve a specific safety integrity” on page 40.
Input
Connection to the
Axioline F connectors
Single-channel sensor or
redundant sensor
Two-channel redundant controlling device/sensor
Input signal Equivalent Non-equivalent
Cross-circuit monitoring With Without With Without With Without
Sensors that can be
connected:
– Contact-based Yes Yes - Yes Yes - Yes Yes
– With OSSD
outputs
No - Yes No - Yes No No
Achievable
safety integrity
SIL22233333
SILCL22233333
Cat.3*22434**43
PL d d d e d e e d
For connection example,
see page
42 44 46 51 53 55 60 61
* Cat. 3 can only be achieved with a redundant sensor.
** The category that can be achieved depends on the sensor used.

Product description
105738_en_04 PHOENIX CONTACT 19
2.6 Local diagnostics and status indicators
Figure 2-4 Local diagnostics and status indicators
D
UI
FS P
00
SD
CM
0102 03 04 05 06 07
Table 2-1 Overview of diagnostics LEDs
Designation Color State Description
D Red/yellow/
green
Diagnostics for local bus communication
Green on The device is ready for operation, communication within the station is OK.
All data is valid. There is no error.
Flashing green The device is ready for operation, communication within the station is OK.
The data is not valid. Valid data from the controller/higher-level network not
available.
There is no error on the module.
Flashing
green/yellow
The device is ready for operation, communication within the station is OK.
Output data cannot be output and/or input data cannot be read.
There is an error on the I/O side of the module.
Yellow on The device is ready for operation, but has still not detected a valid cycle
after power on.
Flashing
yellow
The device is not (yet) part of the active configuration.
Red on The device is ready for operation, but has lost the connection to the bus
head.
Flashing red The device is ready for operation, but there is no connection to the previous
device.
Off Device is in (power) reset.
UI Green Diagnostics for digital input supply
Green on Supply for the digital inputs is present and is > around 17 V DC.
Flashing green Supply for the digital inputs is not present or is < around 17 V DC.
FS Red Diagnostics for failure state
Off The safety application has a valid parameterization.
(Only applies if UI is on or flashing at the same time.)
Red on Hardware fault. Communication to the higher-level controller is disabled.
The module has entered the safe state (failure state).
Flashing red The module is not parameterized.

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P Green Diagnostics for safe communication protocol
Off No safe communication.
Green on Safe communication is running without errors.
Flashing green Safe communication is running. The PROFIsafe system is requesting an
acknowledgment.
CM Red Startup mode
Off PROFIsafe mode.
Red on Startup mode.
WARNING: In startup mode, the device is in standard operation.
Startup mode: see Section 8.1.1 “Startup mode” on page 66.
SD Yellow Acknowledgment request
Off No diagnostic message present that needs to be acknowledged.
Yellow on A diagnostic message is present that needs to be acknowledged for safe
digital input errors, supply voltage errors or general errors.
00 - 07 Green Status of each input from 0 - 7
Off Input at logic “0”.
Green on Input at logic “1”.
Table 2-1 Overview of diagnostics LEDs [...]
Designation Color State Description