THOMSON MEC 310 - APLLICATION NOTES EXTERNAL I-O... User manual

9087A – 198
th
Street, Langley, BC Canada V1M 3B1 Telephone [phone]
Fax [phone] E-Mail: [e-mail] www.thomsontechnology.com
MEC 310
GENSET CONTROLLER
Option M – Modbus Communications
r.0442C
PM080 Rev 0 07/06/18

MEC 310 GENSET CONTROLLER WITH MODBUS
PM080 Rev 0 07/06/18 Thomson Technology
TABLE OF CONTENTS
1. WARNINGS AND LEGAL INFORMATION ................................................................... 1
L
EGAL INFORMATION AND RESPONSIBILITY
............................................................................. 1
E
LECTROSTATIC DISCHARGE AWARENESS
............................................................................. 1
S
AFETY ISSUES
................................................................................................................... 1
D
EFINITIONS
....................................................................................................................... 1
2. DESCRIPTION OF OPTION ......................................................................................... 2
ANSI
NUMBERS
.................................................................................................................. 2
O
PTION
M - M
ODBUS
.......................................................................................................... 2
T
ERMINAL DESCRIPTION
....................................................................................................... 2
H
ARDWARE SETTINGS
......................................................................................................... 2
W
IRING
.............................................................................................................................. 2
3. PARAMETER LIST ....................................................................................................... 3
4. DATA TABLES.............................................................................................................. 4
C
ONFIGURABLE AREA
(
READ ONLY
) (
FUNCTION CODE
04
H
) ..................................................... 4
M
EASUREMENT TABLE
(
READ ONLY
) (
FUNCTION CODE
04
H
) .................................................... 9
A
LARM AND STATUS TABLE
(
READ ONLY
) (
FUNCTION CODE
04
H
)............................................ 12
C
ONTROL REGISTER TABLE READ
(03
H
)/
WRITE
(10
H
) ............................................................ 17
C
OMMAND FLAGS TABLE
(
WRITE ONLY
) (
FUNCTION CODE
0F
H
).............................................. 18
S
TATUS FLAGS TABLE
(
READ ONLY
) (
FUNCTION CODE
02
H
)................................................... 19

PM080 Rev 0 07/06/18 1 Thomson Technology
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 generator set 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.
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 potentially dangerous situation which could result in
death, personal injury or damaged equipment, if certain guidelines are no
t
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 unauthorised personnel. If opened anyway, the
warranty will be lost.

PM080 Rev 0 07/06/18 2 Thomson Technology
2. Description of option
ANSI numbers
Function ANSI no.
RS485 modbus communication -
Option M - Modbus
The Modbus option is a hardware and software option.
Terminal description
Term. Function Description
49 DATA - (Tx)
50 GND
51 DATA + (Rx)
52 Not used
Modbus RTU, RS485
Hardware settings
These are the MEC 310 RS485 hardware settings:
a. 9600 or 19200 bps
b. 8 data bits
c. None parity
d. 1 stop bit
Wiring
MEC310
Modbus Slave
Tx
49
GND
50
Rx
51
Tx
49
GND
50
Rx
51
Tx
49
GND
50
Rx
51
Data
Tx
GND Data
Rx
MEC310
Modbus Slave
MEC310
Modbus Slave
PLC
Modbus Master
Cable: Belden 3105A or equivalent. 22 AWG (0.6 mm
2
) twisted pair,
shielded, <40 m

/m, min. 95% shield coverage.

PM080 Rev 0 07/06/18 3 Thomson Technology
3. Parameter list
7510 Ext. communication
No. Setting Min. setting Max. setting Factory
setting
7511 Ext. communication ID 1 247 1
7512 Ext. communication Baud rate 9600 Baud 19200 Baud 9600 Baud
7513 Ext. communication Mode RTU ASCII RTU
The mode ASCII is used for modem communication (ASCII: 7 data bit. RTU: 8
data bit).

PM080 Rev 0 07/06/18 4 Thomson Technology
4. Data tables
Example:
Read measured Supply Voltage (U
SUPPLY
).
1. Determine required parameters:
MEC 310 ID (default) = 01h
Function Code (Read) = 04h
Offset Address (from table below) = 34d -> 22h
Request length of 1 word = 01h
2. Create and send Modbus command; receive response:
Tx: 01h 04h 00h 22h 00h 01h 91h C0h
Rx: 01h 04h 02h 00h EDh 79h 7Dh
Where the last two words of each message are automatically generated CRC codes
3. Interpret Data:
Read 00 ED h = 237d [V/10] = 23.7 V
Configurable area (read only) (function code 04h)
Address Content Type
0 U
L1-L2
Generator voltage. Measured in [V]
1 U
L2-L3
Generator voltage. Measured in [V]
2 U
L3-L1
Generator voltage. Measured in [V]
3 U
L1-N
Generator voltage. Measured in [V]
4 U
L2-N
Generator voltage. Measured in [V]
5 U
L3-N
Generator voltage. Measured in [V]
6 f
L1
Generator freq. Measured in [Hz/100]
7 I
L1
Generator current. Measured in [A]
8 I
L2
Generator current. Measured in [A]
9 I
L3
Generator current. Measured in [A]
10 P
GEN
Generator active power. Measured in [kW]. Negative
value means reverse power
11 Q
GEN
Generator reactive power. Measured in [kVAr]. Positive
value means generated inductive reactive power
12 S
GEN
Generator apparent power. Measured in [kVA]
13 Cos-phi -99...0...100 generator cosinus-phi. Measured in cos-
phi:100. Negative value means capacitive cos-phi
16 [HI]
17 [LO]
E
GEN
Energy counter. Measured in [kWh]. Max. 300000
MWh
18 U
MainsL1-L2
Mains voltage. Measured in [V]
19 U
MainsL2-L3
Mains voltage. Measured in [V]
20 U
MainsL3-L1
Mains voltage. Measured in [V]
21 U
MainsL1-N
Mains voltage. Measured in [V]
22 U
MainsL2-N
Mains voltage. Measured in [V]
23 U
MainsL3-N
Mains voltage. Measured in [V]
24 F
Mains
Mains frequency L1. Measured in [Hz/100]

PM080 Rev 0 07/06/18 5 Thomson Technology
Address Content Type
27 Alarms Number of alarms
28 Alarms Number of unack. alarms
29 Start attempts Start attempts
30 [HI]
31 [LO]
Abs. run. hours Hour
32 GB
oper
GB operations counter
33 MB
oper
MB operations counter
34 U
SUPPLY
Supply voltage. Measured in [V/10]
36 RPM RPM
37 Multi input term 6, unscaled
38 Multi input term 7, unscaled
39 Multi input term 8, unscaled
Bit 0 1000 G -P> 1
Bit 1
Bit 2
Bit 3 1030 G I> 1
Bit 4 1040 G I> 2
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
Bit 10
Bit 11 1150 G U> 1
Bit 12
Bit 13 1170 G U< 1
Bit 14
48 Protection
alarms
Bit 15
Bit 0 1210 G f> 1
Bit 1
Bit 2
Bit 3 1240 G f< 1
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
49 Protection
alarms
Bit 15
51 Synchronisation Bit 0

PM080 Rev 0 07/06/18 6 Thomson Technology
Address Content Type
Bit 1
Bit 2
Bit 3 2150 Phase seq. error
Bit 4 2160 GB open failure
Bit 5 2170 GB close failure
Bit 6 GB pos. failure
Bit 7 2200 MB open failure
Bit 8 2210 MB close failure
Bit 9 MB pos. failure
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
alarms
Bit 15
Bit 0 3000 Dig. input 1
Bit 1 3010 Dig. input 2
Bit 2 3020 Dig. input 3
Bit 3 3030 Dig. input 4
Bit 4 3040 Dig. input 5
Bit 5 3050 Dig. input 6
Bit 6
Bit 7
Bit 8
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
53 Digital inputs
Bit 15
Bit 0 3400 Dig. multi input 6
Bit 1 3410 Dig. multi input 7
Bit 2 3420 Dig. multi input 8
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
Bit 10
Bit 11
54 Digital inputs
Bit 12 3490 Dig. input 19-20, emergency
stop

PM080 Rev 0 07/06/18 7 Thomson Technology
Address Content Type
Bit 13
Bit 14
Bit 15
Bit 0 Multi input 1.1
Bit 1 Multi input 1.2
Bit 2 W. failure, multi input 1
Bit 3 Multi input 2.1
Bit 4 Multi input 2.2
Bit 5 W. failure, multi input 2
Bit 6 Multi input 3.1
Bit 7 Multi input 3.2
Bit 8 W. failure, multi input 3
Bit 9 4510 Overspeed 1
Bit 10 4520 Overspeed 2
Bit 11 4620 VDO fuel level 1.3
Bit 12 4610 Charger generator
Bit 13 4600 V-Belt
Bit 14 4550 Generator Hz/V failure
57
Bit 15 4570 Start failure
Bit 0 5000 Relay 21
Bit 1 5010 Relay 22
Bit 2 5020 Relay 23
Bit 3 5030 Relay 24
Bit 4 5040 Relay 26
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
58
Bit 15
Bit 0
Bit 1 Manual
Bit 2
Bit 3 Auto
Bit 4 Test
Bit 5 Island
Bit 6 AMF
Bit 7
Bit 8
59
Bit 9

PM080 Rev 0 07/06/18 8 Thomson Technology
Address Content Type
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
Bit 15 AMF active
Bit 0 7570 EIC comm. error
Bit 1 7580 EIC warning
Bit 2 7590 EIC shutdown
Bit 3 7600 EIC overspeed
Bit 4 7610 EIC coolant temp. 1
Bit 5 7620 EIC coolant temp. 2
Bit 6 7630 EIC oil pressure 1
Bit 7 7640 EIC oil pressure 2
Bit 8
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
60 Communication
Bit 15

PM080 Rev 0 07/06/18 9 Thomson Technology
Measurement table (read only) (function code 04h)
Address Content Type
500
Application version
501
U
L1-L2
Generator voltage. Measured in [V]
502
U
L2-L3
Generator voltage. Measured in [V]
503
U
L3-L1
Generator voltage. Measured in [V]
504
U
L1-N
Generator voltage. Measured in [V]
505
U
L2-N
Generator voltage. Measured in [V]
506
U
L3-N
Generator voltage. Measured in [V]
507
f
gen
Generator freq.
Measured in [Hz/100]
513
I
L1
Generator current. Measured in [A]
514
I
L2
Generator current. Measured in [A]
515
I
L3
Generator current. Measured in [A]
516
P
L1
Generator active power. Measured in [kW]. Negative value
means reverse power
517
P
L2
Generator active power. Measured in [kW]. Negative value
means reverse power
518
P
L3
Generator active power. Measured in [kW]. Negative value
means reverse power
519
P
GEN
Generator total active power. Measured in [kW]. Negative
value means reverse power.
520
Q
L1
Generator reactive power. Measured in [kVAr]. Positive
value means generated inductive reactive power
521
Q
L2
Generator reactive power. Measured in [kVAr]. Positive
value means generated inductive reactive power
522
Q
L3
Generator reactive power. Measured in [kVAr]. Positive
value means generated inductive reactive power
523
Q
GEN
Generator total reactive power. Measured in [kVAr].
Positive value means generated inductive reactive power
524
S
L1
Generator apparent power. Measured in [kVA]. Positive
value means generated inductive reactive power
525
S
L2
Generator apparent power. Measured in [kVA]. Positive
value means generated inductive reactive power
526
S
L3
Generator apparent power. Measured in [kVA]. Positive
value means generated inductive reactive power
527
S
GEN
Generator total apparent power. Measured in [kVA].
Positive value means generated inductive reactive power
536 [HI]
537 [LO]
E
GEN
Total energy counter. Measured in [kWh]. Max.
300000MWh
538
Cos -99...0...100 Generator cos . Measured in cos x 100.
Negative value means capacitive cos 
539
U
L1-L2
Mains voltage. Measured in [V]
540
U
L2-L3
Mains voltage. Measured in [V]
541
U
L3-L1
Mains voltage. Measured in [V]
542
U
L1-N
Mains voltage. Measured in [V]
543
U
L2-N
Mains voltage. Measured in [V]
544
U
L3-N
Mains voltage. Measured in [V]
545
f
Mains
Mains freq. Measured in [Hz/100]

PM080 Rev 0 07/06/18 10 Thomson Technology
Address Content Type
554 [HI]
555[LO]
Running time Absolute running hour counter
558
Number of alarms
559
Number of unacknowledged alarms
560
Number of acknowledged active alarms
563
GB
oper
Generator/circuit breaker operations counter
564
MB
oper
Mains breaker operation counter
566
Start attempts Number of start attempts
567
U
SUPPLY
Supply voltage. Measured in [V/10]
569
Service timer Service timer 1 (running hours)
570
Service timer Service timer 1 (days)
571
Service timer Service timer 2 (running hours)
572
Service timer Service timer 2 (days)
576
RPM Running feedback RPM
580
Multi input Multi input 2, unscaled
581
Multi input Multi input 3, unscaled
582
Multi input Multi input 1, unscaled
583
Multi input Multi input 2, scaled
584
Multi input Multi input 3, scaled
585
Multi input Multi input 1, scaled
593
Engine communication Refer to option J manual
594
Engine communication Refer to option J manual
595
Engine communication Refer to option J manual
596
Engine communication Refer to option J manual
597
Engine communication Refer to option J manual
598
Engine communication Refer to option J manual
599
Engine communication Refer to option J manual
600
Engine communication Refer to option J manual
601
Engine communication Refer to option J manual
602
Engine communication Refer to option J manual
603
Engine communication Refer to option J manual
604
Engine communication Refer to option J manual
605
Engine communication Refer to option J manual
606
Engine communication Refer to option J manual
607
Engine communication Refer to option J manual
608
Engine communication Refer to option J manual
609
Engine communication Refer to option J manual
610
Engine communication Refer to option J manual
611
Engine communication Refer to option J manual
612
Engine communication Refer to option J manual
613
Engine communication Refer to option J manual
614
Engine communication Refer to option J manual
615
Engine communication Refer to option J manual
616
Engine communication Refer to option J manual
617
Engine communication Refer to option J manual

PM080 Rev 0 07/06/18 11 Thomson Technology
Address Content Type
618
Engine communication Refer to option J manual

PM080 Rev 0 07/06/18 12 Thomson Technology
Alarm and status table (read only) (function code 04h)
Address Content Type
Bit 0 1000 G -P> 1
Bit 1
Bit 2
Bit 3 1030 G I> 1
Bit 4 1040 G I> 2
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
Bit 10
Bit 11 1150 G U> 1
Bit 12
Bit 13 1170 G U< 1
Bit 14
1000 Protection
alarms
Bit 15
Bit 0 1210 G f> 1
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
1001 Protection
alarms
Bit 15
Bit 0
Bit 1
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7 1620 Main unbalanced voltage
Bit 8
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
1003 Protection
alarms
Bit 15
Bit 0
Bit 1
1005 Synchronisation
alarms
Bit 2

PM080 Rev 0 07/06/18 13 Thomson Technology
Address Content Type
Bit 3 2150 Phase seq error
Bit 4 2160 GB open failure
Bit 5 2170 GB close failure
Bit 6 GB pos failure
Bit 7 2200 MB open failure
Bit 8 2210 MB close failure
Bit 9 MB pos failure
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
Bit 15
Bit 0 3000 Dig. input 10
Bit 1 3010 Dig. input 11
Bit 2 3020 Dig. input 12
Bit 3 3030 Dig. input 13
Bit 4 3040 Dig. input 14
Bit 5 3050 Dig. input 15
Bit 6
Bit 7
Bit 8
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
1007 Digital inputs
Bit 15
Bit 0 3400 Dig. multi input term. 7
Bit 1 3410 Dig. multi input term. 8
Bit 2 3420 Dig. multi input term. 6
Bit 3 3404 Wire failure, dig. multi input term. 7
Bit 4 3404 Wire failure, dig. multi input term. 8
Bit 5 3424 Wire failure, dig. multi input term. 6
Bit 6
Bit 7
Bit 8
Bit 9
Bit 10
Bit 11
Bit 12 3490 Dig. input 19-20 / Emergency STOP
Bit 13
Bit 14
1010 Protection
alarms
Bit 15
Bit 0 Multi input 1.1
Bit 1 Multi input 1.2
Bit 2 4240 W. failure, multi input 1
Bit 3 Multi input 2.1
Bit 4 Multi input 2.2
Bit 5 4370 W. failure, multi input 2
Bit 6 Multi input 3.1
1013 Analogue inputs
Bit 7 Multi input 3.2

PM080 Rev 0 07/06/18 14 Thomson Technology
Address Content Type
Bit 8 4500 W. failure, multi input 3
Bit 9 4510 Overspeed 1
Bit 10 4520 Overspeed 2
Bit 11 4620 VDO fuel level 1.3
Bit 12 4610 Charger generator
Bit 13 4600 V-Belt
Bit 14 4560 Generator Hz/V failure
Bit 15 Start failure
Bit 0 4580 Stop failure
Bit 1 4960 U< aux. supply term. 1
Bit 2 4970 U> aux. supply term. 1
Bit 3
Bit 4
Bit 5 4610 Charger Gen
Bit 6
Bit 7
Bit 8
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
1014 Analogue inputs
Bit 15
Bit 0 6110 Service timer 1
Bit 1 6120 Service timer 2
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13 Fuel fill check
Bit 14
1015 System/general
alarms
Bit 15
Bit 0 5000 Relay 21
Bit 1 5010 Relay 22
Bit 2 5020 Relay 23
Bit 3 5030 Relay 24
Bit 4 5040 Relay 26
Bit 5 GB On
Bit 6 MB On
Bit 7
Bit 8
Bit 9
Bit 10
Bit 11
1016 Relay outputs
Bit 12

PM080 Rev 0 07/06/18 15 Thomson Technology
Address Content Type
Bit 13
Bit 14
Bit 15
Bit 0 Mains failure
Bit 1 MB pos ON
Bit 2
Bit 3
Bit 4 GB pos ON
Bit 5
Bit 6 Engine running
Bit 7 Running detection, timer expired
Bit 8 DG Hz/V OK, timer expired
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
1018 Status
Bit 15
Bit 0
Bit 1 Manual
Bit 2
Bit 3 Auto
Bit 4 Test
Bit 5 Island
Bit 6 AMF
Bit 7
Bit 8
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
1019
Bit 15 AMF active
Bit 0 EIC comm. error
Bit 1 EIC warning
Bit 2 EIC shutdown
Bit 3 EIC overspeed
Bit 4 EIC coolant temp. 1
Bit 5 EIC coolant temp. 2
Bit 6 EIC oil pressure 1
Bit 7 EIC oil pressure 2
Bit 8
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
1020 Engine
communication
Bit 15
Bit 01024 Engine
communication Bit 1
Refer to option J (CAN) manual for bit
0-13

PM080 Rev 0 07/06/18 16 Thomson Technology
Address Content Type
Bit 2
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
Bit 10
Bit 11
Bit 12
Bit 13
Bit 14
Bit 15

PM080 Rev 0 07/06/18 17 Thomson Technology
Control register table read(03h)/write(10h)
Address Content Description
5 Control
command
Bit 0 This bit must be 1 when writing the
command word. If the bit is 0, the
control command is ignored
Bit 1 Start
Bit 2 GB ON
Bit 3 GB OFF
Bit 4 Stop
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9
Bit 10 Alarm ack. This bit is automatically
reset.
Bit 11 Nominal setting 1
Bit 12 Nominal setting 2
Bit 13 Nominal setting 3
Bit 14 Nominal setting 4
Bit 15
6 Control
command
Bit 0 This bit must be 1 when writing the
command word. If the bit is 0, the
control command is ignored
Bit 1 Island
Bit 2 Automatic mains failure (AMF)
Bit 3
Bit 4
Bit 5
Bit 6
Bit 7
Bit 8
Bit 9 MB ON
Bit 10 MB OFF
Bit 11
Bit 12 Manual mode
Bit 13
Bit 14 Auto mode
Bit 15 Test