AuCom Modbus RTU Card User manual

INSTRUCTIONS
MODBUS RTU CARD
RIGHT FROM
THE START
Contents
1. Important User Information................................................................ 2
2. Installation........................................................................................... 2
3. Operation ............................................................................................. 3
4. Modbus Registers................................................................................ 4
5. Specifications .................................................................................... 16
Product Compatibility
The Modbus RTU Card is suitable for use with EMX4e and EMX4i soft starters.
Disclaimer
The examples and diagrams in this manual are included solely for illustrative
purposes. The information contained in this manual is subject to change at any time
and without prior notice. In no event will responsibility or liability be accepted for
direct, indirect or consequential damages resulting from the use or application of this
equipment.
Warnings
WARNING
For your safety, isolate the soft starter from mains voltage before attaching or
removing accessories.
WARNING
Inserting foreign objects or touching the inside of the starter while the
expansion port cover is open may endanger personnel, and can damage the
starter.
© 2018 AuCom Electronics Ltd. All Rights Reserved.
Modbus RTU Card | Rev B 08/2018

INSTRUCTIONS
1. Important User Information
Observe all necessary safety precautions when controlling the soft starter remotely.
Alert personnel that machinery may start without warning.
It is the installer's responsibility to follow all instructions in this manual and to follow
correct electrical practice.
Use all internationally recognised standard practice for RS-485 communications when
installing and using this equipment.
2. Installation
2.1 Installation Procedure
1. Push a small flat-bladed screwdriver into the slot in the centre of the expansion
port cover, and ease the cover away from the starter.
2. Line up the card with the expansion port. Gently push the card along the guide rails
until it clicks into the starter.
B4 B5 10
1112 13 14 15 21 22
33 34 41 42 44 53 54
B4 B5 10
1
1 12 13 14 15 21 22
33 34 41 42 44 53 54
1 2
17049.A
2.2 Connecting to the Network
After the card is in place, control power can be restored and field wiring can be
connected via the 5-way connector plug.
35 4 2 1
17846.A
Pin
Function
1, 2 Data A
3
Common
4, 5 Data B
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INSTRUCTIONS
3. Operation
The Modbus RTU Card must be controlled by a Modbus client (such as a PLC) which
complies with the Modbus Protocol Specification. For successful operation, the client
must also support all functions and interfaces described in this document.
3.1 Master Configuration
For standard Modbus 11-bit transmission, the Master must be configured for 2 stop
bits with No Parity and 1 stop bit for odd or even parity.
For 10-bit transmission, the Master must be configured for 1 stop bit.
In all cases, the Master baud rate and slave address must match those set in
parameters 12A~12D.
The data polling interval must be long enough for the module to respond. Short
polling intervals may cause inconsistent or incorrect behaviour, particularly when
reading multiple registers. The recommended minimum polling interval is 300 ms.
3.2 Configuration
Modbus Network Settings
Network communication parameters for the card must be set via the soft starter. For
details on how to configure the soft starter, refer to the soft starter user manual.
Parameter
Parameter name
Description
12A
Modbus Address
Sets the Modbus RTU network address for the soft
starter.
12B Modbus Baud Rate Selects the baud rate for Modbus RTU
communications.
12C
Modbus Parity
Selects the parity for Modbus RTU
communications.
12D
Modbus Timeout
Selects the timeout for Modbus RTU
communications.
NOTE
The Modbus RTU Card will read communications parameter settings from the
soft starter when control power is applied. If parameters are changed in the
starter, control power must be cycled for the new values to take effect.
Enabling Network Control
The soft starter will only accept commands from the Modbus RTU Card if parameter
1A
Command Source is set to ‘Network’.
NOTE
If the reset input is active, the starter will not operate. If a reset switch is not
required, fit a link across terminals 10, 11 on the soft starter.
Modbus RTU Card (710-16499-00B) 3

INSTRUCTIONS
3.3 Feedback LEDs
LED Status
Description
Off
Soft starter not powered up
On Communication active
Flashing
Communication inactive
NOTE
If communication is inactive, the soft starter may trip on Network
Communications. If parameter 6M
Network Communications
is set to 'Soft Trip
and Log' or 'Trip Starter', the soft starter will require a reset.
4. Modbus Registers
NOTE
The available features and parameters details may vary according to the model
and software version of the starter. Refer to the soft starter user manual for
details of parameters and supported features.
4.1 PLC Configuration
Use the register tables below to map registers within the module to addresses within
the PLC.
NOTE
All references to registers mean the registers within the module unless
otherwise stated.
4.2 Compatibility
The Modbus RTU Card supports two modes of operation.
•In Standard Mode, the card uses registers defined in the Modbus Protocol
Specification.
•In Legacy Mode, the card uses the same registers as AuCom's Modbus Module.
Some registers differ from those specified in the Modbus Protocol Specification.
The mode of operation is determined by the values of bit 15 in register 40001.
4.3 Ensuring Safe and Successful Control
Data written to the device will remain in its registers until the data is overwritten or
the device is reinitialised.
If the soft starter may be controlled via Command Override (parameter 7A) or may be
disabled via the reset input (terminals 10, 11) fieldbus commands should be cleared
from the registers. If a command is not cleared, it will be re-sent to the starter once
fieldbus control resumes.
4Modbus RTU Card (710-16499-00B)

INSTRUCTIONS
4.4 Parameter Management
Parameters can be read from and written to the starter. The Modbus RTU Card can
read or write a maximum of 125 registers in one operation.
CAUTION
Do not change the default values of the Advanced parameters (parameter
group 20). Changing these values may cause unpredictable behaviour in the soft
starter.
4.5 Standard Mode
Command and Configuration Registers (Read/Write)
Register
Description
Bits
Details
40001 Command
(single write)
0 to 7 To send a command to the starter, write the
required value:
00000000 = Stop
00000001 = Start
00000010 = Reset
00000100 = Quick stop (coast to stop)
00001000 = Forced communication trip
00010000 = Start using Parameter Set 1
00100000 = Start using Parameter Set 2
01000000 =
Reserved
10000000 =
Reserved
8 to 14
Reserved
15
Must = 1
40002
Reserved
40003
Reserved
40004 Reserved
40005
Reserved
40006 Reserved
40007
Reserved
40008
Reserved
40009 ~
40xxx
Parameter
management
(single or
multiple
read/write)
0 to 15 Manage soft starter programmable
parameters. Refer to the relevant soft starter
literature for a complete parameter list.
Modbus RTU Card (710-16499-00B) 5

INSTRUCTIONS
Status Reporting Registers (Read Only)
NOTE
For models EMX4x-0064B and smaller (soft starter model ID 1~4), the current
reported via communications registers is 10 times greater than the actual
value.
Register
Description
Bits
Details
30003
Reserved
30004
Reserved
30005
Reserved
30006 Reserved
30007
Reserved
30008 Reserved
30600
Version
0 to 5
Binary protocol version
6 to 8
Parameter list version number
9 to 15 Product type code:
12 = EMX4e
13 = EMX4i
30601
Model number
0 to 7
Reserved
8 to 15
Soft starter model ID
30602 Changed
parameter
number
0 to 7 0 = No parameters have changed
1~255 = Index number of the last parameter
changed
8 to 15
Total number of parameters available in the
starter
30603 Changed
parameter value
0 to 15 Value of the last parameter that was changed,
as indicated in register 30252
30604
Starter state
0 to 4
0 = Reserved
1 = Ready
2 = Starting
3 = Running
4 = Stopping
5 = Not ready (restart delay, restart
temperature check, run simulation, reset input
is open)
6 = Tripped
7 = Programming mode
8 = Jog forward
9 = Jog reverse
5 1 = Warning
6
0 = Unintialised
1 = Initialised
6Modbus RTU Card (710-16499-00B)

INSTRUCTIONS
Register
Description
Bits
Details
7 Command source
0 = Remote Keypad, Digital Inputs, Clock
1 = Network
8 0 = Parameter(s) have changed since last
parameter read
1 = No parameters have changed
9
0 = Negative phase sequence
1 = Positive phase sequence
10 to 15
Reserved
30605
Current
0 to 13
Average rms current across all three phases
14 to 15
Reserved
30606
Current
0 to 9
Current (% motor FLC)
10 to 15 Reserved
30607
Motor
temperature
0 to 7
Motor thermal model (%)
8 to 15 Reserved
30608
Power
0 to 11
Power
12 to 13
Power scale
0 = Multiply power by 10 to get W
1 = Multiply power by 100 to get W
2 = Power (kW)
3 = Multiply power by 10 to get kW
14 to 15
Reserved
30609 % Power factor 0 to 7 100% = power factor of 1
8 to 15
Reserved
30610
Voltage
0 to 13
Average rms voltage across all three phases
14 to 15 Reserved
30611
Current
0 to 13
Phase 1 current (rms)
14 to 15 Reserved
30612
Current
0 to 13
Phase 2 current (rms)
14 to 15
Reserved
30613
Current
0 to 13
Phase 3 current (rms)
14 to 15
Reserved
30614
Voltage
0 to 13
Phase 1 voltage
14 to 15
Reserved
30615
Voltage
0 to 13
Phase 2 voltage
14 to 15 Reserved
30616
Voltage
0 to 13
Phase 3 voltage
14 to 15
Reserved
30617
Parameter list
version number
0 to 7
Parameter list minor revision
8 to 15
Parameter list major version
Modbus RTU Card (710-16499-00B) 7

INSTRUCTIONS
Register
Description
Bits
Details
30618 Digital Input
state
0 to 15 For all inputs, 0 = open, 1 = closed (shorted)
0 = Start/Stop
1 =
Reserved
2 = Reset
3 = Input A
4 = Input B
5 to 15 =
Reserved
30619
Trip code
0 to 7
Refer to Trip Codes on page 13
8 to 15 Reserved
30620~
30631
Reserved
NOTE
Reading register 30603 (Changed parameter value) will reset registers 30602
(Changed parameter number) and 30604 (Parameters have changed). Always
read registers 30602 and 30604 before reading register 30603.
8Modbus RTU Card (710-16499-00B)

INSTRUCTIONS
4.6 Legacy Mode
Registers
NOTE
For models EMX4x-0064B and smaller (soft starter model ID 1~4), the current
reported via communications registers is 10 times greater than the actual
value.
NOTE
Legacy Mode reports read-only status information in registers 40003 onwards,
to match the register definitions of the clip-on Modbus Module. Identical data is
also available via registers 30003 onwards.
Register
Description
Bits
Details
40001 Reserved
40002
Command
(single write)
0 to 2
To send a command to the starter, write the
required value:
1 = Start
2 = Stop
3 = Reset
4 = Quick stop (coast to stop)
5 = Forced communication trip
6 = Start using Parameter Set 1
7 = Start using Parameter Set 2
3 to 15
Reserved
40003
Starter state
0 to 3
1 = Ready
2 = Starting
3 = Running
4 = Stopping (including braking)
5 = Restart delay (including temperature check)
6 = Tripped
7 = Programming mode
8 = Jog forward
9 = Jog reverse
4
1 = Positive phase sequence (only valid if
bit 6 = 1)
5 1 = Current exceeds FLC
6
0 = Unintialised
1 = Initialised
7 to 15
Reserved
40004
Reserved
40005 Motor current 0 to 7 Average 3-phase motor current (A)
8 to 15
Reserved
Modbus RTU Card (710-16499-00B) 9

INSTRUCTIONS
Register
Description
Bits
Details
40006 Motor
temperature
0 to 7 Motor thermal model (%)
8 to 15
Reserved
40007 Reserved
40008
Reserved
40009
~
40200
Parameter
management
(single or
multiple
0 to 7
Manage soft starter programmable parameters.
Refer to the relevant soft starter literature for a
complete parameter list.
read/write)
8 to 15
Reserved
40600 Version 0 to 5 Binary protocol version
6 to 8
Parameter list version number
9 to 15
Product type code:
12 = EMX4e
13 = EMX4i
40601 Model number 0 to 7 Reserved
8 to 15
Soft starter model ID
40602
Changed
parameter
number
0 to 7
0 = No parameters have changed
1~255 = Index number of the last parameter
changed
8 to 15
Total number of parameters available in the
starter
40603 Changed
parameter value
0 to 15 Value of the last parameter that was changed,
as indicated in register 40602
40604 Starter state 0 to 4 0 = Reserved
1 = Ready
2 = Starting
3 = Running
4 = Stopping
5 = Not ready (restart delay, restart temperature
check, run simulation, reset input is open)
6 = Tripped
7 = Programming mode
8 = Jog forward
9 = Jog reverse
5
1 = Warning
6 0 = Unintialised
1 = Initialised
7
Command source
0 = Remote Keypad, Digital Inputs, Clock
1 = Network
10 Modbus RTU Card (710-16499-00B)

INSTRUCTIONS
Register
Description
Bits
Details
8 0 = Parameter(s) have changed since last
parameter read
1 = No parameters have changed
3
9 0 = Negative phase sequence
1 = Positive phase sequence
10 to 15
Reserved
40605 Current 0 to 13 Average rms current across all three phases
14 to 15
Reserved
40606 Current 0 to 9 Current (% motor FLC)
10 to 15
Reserved
40607
Motor
temperature
0 to 7
Motor thermal model (%)
8 to 15 Reserved
40608
Power
0 to 11
Power
12 to 13 Power scale
0 = Multiply power by 10 to get W
1 = Multiply power by 100 to get W
2 = Power (kW)
3 = Multiply power by 10 to get kW
14 to 15
Reserved
40609 % Power factor 0 to 7 100% = power factor of 1
8 to 15
Reserved
40610 Voltage 0 to 13 Average rms voltage across all three phases
14 to 15
Reserved
40611
Current
0 to 13
Phase 1 current (rms)
14 to 15
Reserved
40612
Current
0 to 13
Phase 2 current (rms)
14 to 15
Reserved
40613
Current
0 to 13
Phase 3 current (rms)
14 to 15 Reserved
40614
Voltage
0 to 13
Phase 1 voltage
14 to 15
Reserved
40615
Voltage
0 to 13
Phase 2 voltage
14 to 15
Reserved
40616 Voltage 0 to 13 Phase 3 voltage
14 to 15
Reserved
40617 Parameter list
version number
0 to 7 Parameter list minor revision
8 to 15
Parameter list major version
Modbus RTU Card (710-16499-00B) 11

INSTRUCTIONS
Register
Description
Bits
Details
40618 Digital Input
state
0 to 15 For all inputs, 0 = open, 1 = closed (shorted)
0 = Start/Stop
1 =
Reserved
2 = Reset
3 = Input A
4 = Input B
5 to 15 =
Reserved
40619
Trip code
0 to 7
Refer to Trip Codes on page 13
8 to 15 Reserved
40620~
40631
Reserved
NOTE
Reading register 40603 (Changed parameter value) will reset registers 40602
(Changed parameter number) and 40604 (Parameters have changed). Always
read registers 40602 and 40604 before reading register 40603.
4.7 Examples
Command: Start
Message
Starter Address
Function Code
Register
Data
CRC
In
20
06
40002
1
CRC1, CRC2
Out
20
06
40002
1
CRC1,CRC 2
Starter state: Running
Message
Starter Address
Function Code
Register
Data
CRC
In
20
03
40003
1
CRC1, CRC2
Out
20
03
2
xxxx0011
CRC1, CRC2
Trip code: Motor overload
Message
Starter Address
Function Code
Register
Data
CRC
In
20
03
40004
1
CRC1, CRC2
Out
20
03
2
00000010
CRC1, CRC2
Download parameter from starter
Read Parameter 5 (1E
Locked Rotor Current ), 600%
Message
Starter Address
Function Code
Register
Data
CRC
In 20 03 40013 1 CRC1, CRC2
Out
20
03
2 (bytes)
600
CRC1, CRC2
12 Modbus RTU Card (710-16499-00B)

INSTRUCTIONS
Upload single parameter to starter
Write Parameter 16 (2I
Stop Mode ), set = 1
Message
Starter Address
Function Code
Register
Data
CRC
In
20
06
40024
1
CRC1, CRC2
Out
20
06
40024
1
CRC1, CRC2
Upload multiple parameters to starter
Write Parameters 9, 10, 11 (parameters 2B
Start Ramp Time , 2C Initial Current , 2D
Current Limit ). Set to values of 15 seconds, 300%, 350% respectively.
Message
Starter Address
Function Code
Register
Data
CRC
In
20
16
40017,3
15, 300, 350
CRC1, CRC2
Out
20
16
40017,3
15, 300, 350
CRC1, CRC2
NOTE
This function can only be used to upload consecutive parameters. The
Register field indicates the number of parameters to be uploaded, and the
register number of the first parameter.
4.8 Trip Codes
Trip
Code
Description
0
No trip
1 Excess start time
2
Motor overload
3
Motor thermistor
4
Current imbalance
5
Frequency
6 Phase sequence
7
Instantaneous overcurrent
8 Power loss
9
Undercurrent
10
Heatsink overtemperature
11
Motor connection
12
Input A trip
13 FLC too high
14
Unsupported option (function not available in inside delta)
15 Communications card fault
16
Forced network trip
17
Internal fault
18
Overvoltage
19
Undervoltage
23 Parameter out of range
Modbus RTU Card (710-16499-00B) 13

INSTRUCTIONS
Trip
Code
Description
24
Input B trip
26
L1 phase loss
27 L2 phase loss
28
L3 phase loss
29 L1-T1 shorted
30
L2-T2 shorted
31
L3-T3 shorted
33
Time-overcurrent (Bypass overload)
34
SCR overtemperature
35 Battery/clock
36
Thermistor circuit
47 Overpower
48
Underpower
56
Keypad disconnected
57 Zero Speed Detect
58
SCR Itsm
59 Instantaneous overcurrent
60
Rating Capacity
70
Current Read Err L1
71
Current Read Err L2
72
Current Read Err L3
73
Remove Mains Volts (mains voltage connected in run simulation)
74
Motor Connection T1
75 Motor Connection T2
76
Motor Connection T3
77 Firing Fail P1
78
Firing Fail P2
79
Firing Fail P3
80 VZC Fail P1
81
VZC Fail P2
82 VZC Fail P3
83
Low Control Volts
84~96
Internal fault x. Contact your local supplier with the fault code (X).
14 Modbus RTU Card (710-16499-00B)

INSTRUCTIONS
4.9 Modbus Error Codes
Code
Description
Example
1
Illegal function code
The adapter or starter does not support the
requested function
2 Illegal data address The adapter or starter does not support the
specified register address
3
Illegal data value
The adapter or starter does not support one of
the received data values
4
Slave device error
An error occurred while trying to perform the
requested function
6 Slave device busy The adapter is busy (for example writing
parameters to the starter)
Modbus RTU Card (710-16499-00B) 15

INSTRUCTIONS
5. Specifications
•Connections
Soft starter ............................................................................. 6-way pin assembly
Network ................... 5-way male and unpluggable female connector (supplied)
Maximum cable size ................................................................................. 2.5 mm2
•Settings
Protocol ............................................................................. Modbus RTU, AP ASCII
Address range ........................................................................................... 0 to 254
Data rate (bps) ................................................................ 4800, 9600, 19200, 38400
Parity ................................................................................ None, Odd, Even, 10-bit
Timeout ....................................................................... None (Off), 10 s, 60 s, 100 s
•Certification
RCM ................................................................................................ IEC 60947-4-2
CE .................................................................................................... EN 60947-4-2
RoHS ..................................................... Compliant with EU Directive 2011/65/EU
16 Modbus RTU Card (710-16499-00B)