THOMSON MEC 310 - APLLICATION NOTES EXTERNAL I-O... Supplement

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MEC 310
APPLICATION NOTES
FEATURE (EXP)
External I/O modules
r. 0524B
PM0104 Rev 0 09/08/20

This description of options covers the following products:
MEC 310 SW version 1.2X.X

MEC 310 APPLICATION NOTES - External I/O Modules
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Table of Contents
1. WARNINGS AND LEGAL INFORMATION ....................................................................................1
LEGAL INFORMATION AND RESPONSIBILITY ..................................................................................................1
ELECTROSTATIC DISCHARGE AWARENESS ....................................................................................................1
SAFETY ISSUES .............................................................................................................................................1
FACTORY SETTINGS ......................................................................................................................................1
DEFINITIONS .................................................................................................................................................1
2. DESCRIPTION OF OPTION ..............................................................................................................2
FEATURE EXP ..............................................................................................................................................2
MEC 310 INTERFACE ...................................................................................................................................2
INSTALLATION OF BECKHOFF CONTROLLER (BUS COUPLER).........................................................................3
3. FUNCTIONAL DESCRIPTION ..........................................................................................................5
SUPPORTED MODULES ..................................................................................................................................5
FUNCTIONAL CHECK OF EXTERNAL I/O MODULES ........................................................................................6
4. PARAMETER LIST..............................................................................................................................9
COMMUNICATION SETUP...............................................................................................................................9
EXTERNAL I/O SETUP .................................................................................................................................10
5. FAULT FINDING .................................................................................................................................12
DIAGNOSTIC LEDS.....................................................................................................................................13

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1. Warnings and legal information
Legal information and responsibility
Thomson Technology takes no responsibility for installation or operation of the generator set. If there
is any doubt about how to install or operate the engine controlled by the unit, the company responsible
for the installation or the operation of the set must be contacted.
Electrostatic discharge awareness
Sufficient care must be taken to protect the terminals against static discharges during the
installation. Once the unit is installed and connected, these precautions are no longer necessary.
Safety issues
Installing the unit implies work with dangerous currents and voltages. Therefore, the installation should
only be carried out by authorised personnel who understand the risks involved in working with live
electrical equipment.
Factory settings
The unit is delivered with certain factory settings. Given the fact that these settings are based on
average values, they are not necessarily the correct settings for matching the individual engine.
Thus precautions must be taken to check the settings before running the engine.
Definitions
Throughout this document a number of notes and warnings will be presented. To ensure that these
are noticed, they will be highlighted in order to separate them from the general text.
Notes
Warning
The notes provide general information, which will be helpful for the reader to
bear in mind.
The warnings indicate a potential
ly dangerous situation, which could result in
death, personal injury or damaged equipment, if certain guide
lines are not
followed.
Be aware of the hazardous live
currents and voltages. Do not touch any AC
measurement inputs as this could lead to injury or death.
The units are not to be opened by unauthorized personnel. If opened anyway, the
warranty will be lost.

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2. Description of option
Feature EXP
EXP is a CANbus based serial interface for external I/O controllers. This option gives the possibility
to add more inputs and outputs to MEX 310 controllers via the CANbus.
MEC 310 controllers support the CANopen protocol. This protocol is based on the CANopen
Application Layer and Communication Profile Specification CiA Draft Standard 301 Version 4.02. It
is not the purpose of this document to describe all the functionalities of the CANopen
communication. The CANopen is implemented and runs according to the CANopen standards and
needs no special attention from the user.
MEC 310 interface
Terminal description
The CAN #2 terminals 57(H) and 59(L) are also used for EAP 300 (see feature EAP 300).
Terminals Function Description
57 CAN-H
58 CAN-GND
59 CAN-L
CAN #2: Terminals for CAN
communication
Please use the website http://www.can-
cia.com to download a detailed
explanation of the CANopen description.
Wiring details: Please refer to the document ‘Installation Instructions and
Reference Handbook’.

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Installation of Beckhoff controller (bus coupler)
The following is a step-by-step guide to set up the communication between the MEC 310 unit and
the Beckhoff modules.
Beckhoff controller setup
1. Set the Baud rate to ‘AUTO’.
2. Set the Node ID to a value between 10 and 64.
3. Connect the required I/O modules to the controller.
4. Mount the ‘End Bus Terminal’: KL9010 module.
CANbus wiring
5. Disconnect power to the MEC 310 and the Beckhoff controller.
6. Connect the CANbus wires to the Beckhoff controller according to the ‘Installation
Instructions’.
MEC 310 unit
7. Connect power to the MEC 310 unit and the Beckhoff controller.
8. Set CAN1 type (menu 7971 = H8.2 or menu 7981 = H8.8) to 'Beckhoff comm.'.
9. Set the Baud rate (default: 125kbit/s).
10. Set the Node ID (menu 7973/7983) to the same value as selected on the Beckhoff
controller.
11. Communication between the MEC 310 unit and the Beckhoff controller is now established.
MEC 310: Please refer to the document ‘Installation Instructions and
Reference Handbook’.
MEC 310: Menu 7971 and 7981 are not available.
MEC 310: Menu 7973 is not available.
Documentation regarding Beckhoff modules can be found at www.beckhoff.com.
MEC 310: The Baud rate is fixed at 50kbit/s.
Communication fault: In case any LEDs on the Beckhoff controller are
flashing continuously for more than 5s, please refer to the chapter ‘Fault
finding’ in this document.

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12. To see the available external I/Os, retrieve the parameters from the MEC 310 unit with the
TPS 300 software.
13. Click on ‘External I/O’ in the TPS 300 software to see or change settings for external I/O
modules.

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3. Functional description
Supported modules
The MEC 310 supports communication with the Beckhoff CANopen I/O modules. The following
CANopen modules are available from Thomson Technology:
Controller (bus coupler) – MANDATORY COMPONENT
Type Numbers of I/Os supported by MEC 310
EXP-BM (BK5150) 8 analogue inputs, 8 analogue outputs, 16 digital inputs and 16
digital outputs
Analogue Input Modules – Order as required
EXP-AI4 (KL3444) 4-ch. analog input terminals 0…20 mA
Digital Input Modules – Order as required
EXP-I4 (KL1104) 4-ch. digital input terminals 24 V DC
EXP-I8 (KL1408) 8-ch. digital input terminals 24 V DC
EXP-I16 (KM1002) 16-ch. digital input 24 V DC
Digital Output Modules – Order as required
EXP-O4 (KL2114) 4-ch. digital output terminals 24 V DC/0.5A
EXP-O8 (KL2408) 8-ch. digital output terminals 24 V DC/0.5A
EXP-O16 (KM2002) 16-ch. digital output 24 V DC/0.5A
End Bus Terminal – MANDATORY COMPONENT
EXP-EBT (KL9010) End bus terminal
Detailed specification of the Beckhoff modules can be found at the website
www.beckhoff.com.
BK5150
MANDATORY
KL1104 KL1408 KM1002 KL2114 KL2408 KM2002 KL3444
ORDER AS REQUIRED
LK9010
MANDATORY
Contact Thomson Technology for information on other modules.

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Functional check of external I/O modules
Alarm messages in display
Alarm message Description
Ext. I/O unk. module The module used is not supported by the MEC 310 unit.
Ext. I/O new setup If modules are changed or have changed place in the row of
modules, this error message will be active. Can be removed by reset
in menu 7974 ‘Reset’.
Module check
The module check can only take place using the TPS 300 software.
Modules are presented in the order by which they are mounted, counting from the CANbus controller
side.
External I/Os will only be shown in the TPS 300 software if they are present.
The result of the check can be read in status channels 12950-12983.
The Beckhoff module transmits a status message to the unit. This message is a HEX value for digital
I/O units and decimal for controllers/analogue I/O units.

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Digital I/O
1. digit: 8 for digital
2. digit: Number of input/output (2, 4 or 8)
3. digit: Not used (0)
4. digit: Input [1] or output [2]
In the TPS 300 software, all values are presented as decimal values, so the HEX values for the
digital I/O modules are translated as follows:
Inputs:
0x8201h = -32255d
0x8401h = -31743d
0x8801h = -30719d
Outputs:
0x8202h = -32254d
0x8402h = -31742d
0x8802h = -30718d

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Examples for digital I/O modules
Module Hex value Dec value
EXP-O4 (KL2114) 8402 -31742
EXP-O8 (KL2408) 8802 -30718
EXP-I16 (KM1002) 8201 -32255
EXP-I4 (KL1104) 8401 -31743
Analogue I/O
A 4-digit decimal value is presented.
This number represents the module version used.
Examples for analogue I/O modules
Module Value
EXP-AI4 (KL3444) 3204
The module check is only carried out when resetting the communication
(parameter 7974 or 7984).

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4. Parameter list
Communication setup
7940 CAN2 comm error
No. Setting Min.
setting
Max.
setting
Factory
setting
7941 CAN2 comm error Delay 2.0 s 600.0 s 10.0 s
7942 CAN2 comm error Relay output A Not used R0 (none)
7943 CAN2 comm error Relay output B Not used
Option
dependent R0 (none)
7944 CAN2 comm error Enable OFF ON OFF
7980 CAN2
No. Setting Min.
setting
Max.
setting
Factory
setting
7981 CAN2 Type OFF
EAP-2
Beckhoff
OFF
7982 CAN2 Baud 50 k
125 k
250 k
125 k
7983 CAN2 ID 10 64 1
7984 CAN2 Reset NO YES NO
7950 KL320x config
No. Setting Type Factory
setting
7951 KL320x config Module 1
7952 KL320x config Module 2
7953 KL320x config Module 3
7954 KL320x config Module 4
PT100 (2/3-wire)
PT1000 (2/3-wire)
10-3200 ohm (2-wire)
10-1200 ohm (2-wire)
PT100
(2/3-wire)
The above selections for KL3202/3204 cannot be changed.
After changing module type, the parameter list in the TPS 300 software must be
uploaded again.
Menu 7984 is for re-establishing communication after a fault/disconnection.
After changing type, the parameter list in the TPS 300 software must be
uploaded again.
MEC 310: Menu 7981 and 7982 are not available.

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External I/O setup
Analogue inputs
12000 Ext. an. in 1.1
No. Setting Min.
setting
Max.
setting
Factory
setting
Set point -20000 20000 10
Delay 2.0 s 600.0 s 10.0 s
Fail class MEC 310 unit dependent Warning
Relay output A Not used Not used
Relay output B Not used
Option
dependent Not used
12000 Ext. an. in 1.1
Enable OFF ON OFF
12010 Ext. an. in 1.2
No. Setting Min.
setting
Max.
setting
Factory
setting
Set point -20000 20000 10
Delay 2.0 s 600.0 s 10.0 s
Fail class MEC 310 unit dependent Warning
Relay output A Not used Not used
Relay output B Not used
Option
dependent Not used
12010 Ext.an. in 1.2
Enable OFF ON OFF
Analogue outputs
Same order for settings 12030-12230.
The external analogue outputs are used as transducer outputs in menu 5820 to
5970. Please refer to the description of option E+F.
MEC 310 does not support analogue outputs.

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Digital inputs
12540 Ext. dig. in 1
No. Setting Min.
setting
Max.
setting
Factory
setting
Delay 2.0 s 600.0 s 10.0 s
Fail class MEC 310 unit dependent Warning
Relay output A Not used Not used
Relay output B Not used
Option
dependent Not used
12540 Ext. dig. in 1
Enable OFF ON OFF
Digital outputs
12790 Ext. dig. out 1
No. Setting Min.
setting
Max.
setting
Factory
setting
Delay 2.0 s 600.0 s 10.0 s
Fail class MEC 310 unit dependent Warning
Relay output A Not used Not used
Relay output B Not used
Option
dependent Not used
12790 Ext digital output 1
Enable OFF ON OFF
Same order for settings 12560-12690.
Same order for settings 12810-12940.

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5. Fault finding
Beckhoff controllers
LC5100 BK5120
BK5150

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Diagnostic LEDs
The Beckhoff controllers have LEDs for display of status. They can be used for fault finding.
CAN ERR blink code
CAN ERR Meaning
Off CANbus has no errors.
Fast blinking
(Approx. 50ms on, approx. 50ms off;
alternating with RUN LED).
Automatic Baud rate detection has not yet
found a valid Baud rate. Not enough
telegrams on the bus yet.
1 x flash
(Approx. 200ms on, 1s off).
CAN warning limit exceeded.There are too
many error frames on the bus. Please check
the wiring (e.g. termination resistors, screens,
conductor length, stubs). Other possible
causes for exceeding the warning limit: There
are no other participating devices in the
network (occurs e.g. when the first node is
started).
2 x blinking
(Each approx. 200ms on, 200ms off, followed
by a 1s pause).
The guarding or heartbeat monitor has
alerted, because neither guarding telegrams
nor heartbeat telegrams are received.
Precondition for guarding monitoring: Guard
time and life time factors are > 0.
Precondition for heartbeat monitoring:
Consumer heartbeat > 0).
The bus coupler is pre-operational (PDOs
switched off), and the outputs are in the error
state.
3 x blinking
(Each approx. 200ms on, 200ms off, followed
by a 1s pause).
A synchronisation error has occurred. No
sync. telegrams have been received during the
set monitoring time (object 0x1006 x 1.5). The
bus node is pre-operational (PDOs switched
off), and the outputs are in the error state.
4 x blinking
(Each approx. 200ms on, 200ms off, followed
by a 1s pause).
Event timer error: The bus coupler has not
received an RxPDO within the set event time
(0x1400ff sub-index 5). The bus node is pre-
operational (PDOs switched off), and the
outputs are in the error state.
RUN blink code
RUN Meaning
Off Firmware status < C0: Bus node is in stopped
state. No communication is possible with SDO
or PDO.
Fast blinking
(Approx. 50ms on, approx. 50ms off;
alternating with CAN ERR LED).
Automatic Baud rate detection has not yet
found a valid Baud rate. Not enough
telegrams on the bus yet.
1 x blinking
(Approx. 200ms on, 1s off).
Bus node is in stopped state. No
communication is possible with SDO or PDO.
Blinking cyclically
(Approx. 200ms on, 200ms off).
Bus node is in pre-operational state. The
node has not yet started.
On Bus node is in operational state.

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Tx overflow blink code
Tx overflow Meaning
On A transmit queue overflow has occurred.
The bus coupler could not send its messages.
Cause: E.g. excessive bus loading. A bus
coupler reset must be carried out.
Blinking cyclically
(Approx. 200ms on, 200ms off).
Logical Tx queue overflow: SYNC interval too
short. The coupler could not deliver all the
TxPDOs before the following SYNC telegram.
The TxPDOs are then e.g. delivered in every
second SYNC interval.
Remedy: Lengthen the SYNC interval or raise
the transmission type. In some cases it may be
appropriate to reduce the I/O count at this bus
station (e.g. by moving I/Os to the
neighbouring station).
Note: The logical Tx queue overflow is
signalled for approx. 10s and then reset. If it
keeps recurring, signalling is maintained.
Rx overflow blink code
Rx overflow Meaning
On A receive queue overflow has occurred. The
bus coupler loses messages.
Cause: E.g. bursts of short telegrams.
A bus coupler reset must be carried out.
Blinking cyclically
(Approx. 200ms on, 200ms off)
A receive queue overflow has occurred. The
bus coupler has lost messages, but the
overflow condition is no longer current.
Cause: E.g. bursts of short telegrams, perhaps
during a status transition (e.g. very short
SYNC interval during transition after
operational).
Signalling is reset during a bus coupler reset.
K-bus LEDs (local errors)
Two LEDs, the K-bus LEDs, indicate the operational state of the bus terminals and the connection
to these bus terminals. The green LED (I/O RUN) lights up in order to indicate fault-free operation.
The red LED (I/O ERR) flashes with two different frequencies in order to indicate an error. The
errors are displayed in the blink code in the following way:
Blink code
Fast blinking Start of the error code
First slow sequence Error code
Second slow sequence Error argument (error location)

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Error type
Error code Error code
argument
Description Remedy
Continuous
flashing
General K-bus error - Check terminal strip.
0 EEPROM check sum error
1 Inline code buffer overflow
1 pulse
2 Unknown data type
- Set manufacturer’s setting with the
KS2000 software.
- Connect fewer terminals; too many
entries in the table for the
programmed configuration.
- Software update required for the
coupler.
0 Programmed configuration
incorrect table entry/bus
coupler
2 pulses
(n>0) Incorrect table comparison
(terminal n)
- Check programmed configuration for
correctness.
- Incorrect table entry/bus coupler.
3 pulses 0 K-bus command error - No terminal connected; attach
terminals.
- One of the terminals is defective;
halve the number of terminals
attached and check whether the
error is still present with the
remaining terminals. Repeat until the
defective terminal is located.
4 pulses 0
n
K-bus data error, break
behind bus terminal n
- Check whether the n+1 terminal is
correctly connected; replace if
necessary.
- Check whether the end terminal
9010 is connected.
5 pulses n K-bus error during register
communication with
terminal
- Replace terminal n.
7 pulses n BK5110 or LC5110:
Unsupported terminal
detected at location n
- Only use digital terminals or bus
coupler BK5120.
All information regarding error codes is related to the documentation from:
http://www.beckhoff.com/
Thomson Technology reserves the right to change any of the above