Fairford synergy Owner's manual

Modbus RTU
MAN-SGY-012-V11 EC 5195
Fairford Electronics Ltd - Synergy Modbus RTU Programming Manual - 22nd February 2016
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OVERVIEW
Synergy has integrated serial communications that are a compatible subset of the widely recognised Modbus RTU protocol
(slave). The serial communications (RS485) is accessible from the RJ12 connection.
MODUBUS COMMUNICATIONS CONFIGURATION
The Modbus communication settings are accessible from the Device menu:
Device >> Modbus Network Settings >> Address (1 –32)
Device >> Modbus Network Settings >> Baud (9600 –115200)
Device >> Modbus Network Settings >> Parity (Odd / Even)
(Data bits = 8, Stop bits = 1)
The communication parameters should be set before connecting the Modbus master.
MODBUS CONNECTOR (SOCKET) PIN-OUT (RJ12) –VIEWED FROM FRONT
Pin1 –GND
Pin2 –Reserved*
Pin 3 –Not connected
Pin 4 –Not connected
Pin 5 –TXD0-A-OUT
Pin 6 –TXD1-B-OUT
MAN-SGY-012-V11 EC 5195
Fairford Electronics Ltd - Synergy Modbus RTU Programming Manual - 22nd February 2016
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* To avoid damage to the Synergy unit or to the RS485 master, do not connect to this pin
TRANSMISSION MODES
ASCII and RTU transmission modes are defined in the Modbus protocol specification. Synergy uses only the RTU mode for the
telegram transmission.
TELEGRAM STRUCTURE FOR RTU MODE
The Modbus RTU structure uses a master-slave system for message exchange. In the case of the Synergy system, it allows up to
32 slaves, and one master. Every telegram begins with the master making a request to a slave, which responds to the master ina
defined structure. In both telegrams (request and answer), the used structure is the same: Address, Function Code, Data and
CRC.
Master (request telegram):
Address
(1 byte)
Function
(1 byte)
Request Data
(n bytes)
CRC
(2 bytes)
Slave (response telegram):
Address
(1 byte)
Function
(1 byte)
Response Data
(n bytes)
CRC
(2 bytes)
Address
The master initiates the communication sending a byte with the address of the destination slave. When responding, the slave also
initiates the telegram with its own address. Broadcast to address 0 (zero), is not supported
Function Code
This field also contains a single byte, where the master specifies the kind of service or function requested to the slave (reading,
writing, etc.). According to the protocol, each function is used to access a specific type of data. For the available list of supported
functions, refer to Section 2.
MAN-SGY-012-V11 EC 5195
Fairford Electronics Ltd - Synergy Modbus RTU Programming Manual - 22nd February 2016
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Data Field
The format and contents of this field depend on the used function and the transmitted value.
CRC
The used method is the CRC-16 (Cyclic Redundancy Check). This field is formed by two bytes; where first the least significant
byte is transmitted (CRC-), and then the most significant (CRC+). The CRC calculation form is described in the Modbus RTU
protocol specification.
SUPPORTED FUNCTIONS
Modbus RTU specification defines the functions used to access different types of data. In Synergy the parameters are defined as
being holding type registers. The following services are available:
Read Holding Registers
Description: reading of register blocks of the holding registertype.
Function code: 03
Modbus function 03 transaction table:
Query
Response
Field
Hex Byte
Field
Hex Byte
Slave address
01
Slave address
01
Function
03
Function
03
Start address Hi
00
Byte count
02
Start address Lo
01
Data Hi
01
No of registers
Hi
00
Data Lo
2C
No of registers
Lo
01
CRC Lo
??
CRC Lo
??
CRC Hi
??
CRC Hi
??
MAN-SGY-012-V11 EC 5195
Fairford Electronics Ltd - Synergy Modbus RTU Programming Manual - 22nd February 2016
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Write Single Register
Description: writing in a single register of the holding type.
Function code: 06.
Modbus function 06 transaction table:
Query
Response
Field
Hex Byte
Field
Hex Byte
Slave address
01
Slave address
01
Function
06
Function
06
Address Hi
00
Address Hi
02
Address Lo
0C
Address Lo
0C
Force data Hi
00
Force data Hi
00
Force data Lo
09
Force data Lo
09
CRC Lo
??
CRC Lo
??
CRC Hi
??
CRC Hi
??
Write Multiple Registers
Description: writing in register blocks of the holding registertype.
Function code: 16.
Modbus function 16 transaction table:
Query
Response
Field
Hex Byte
Field
Hex Byte
Slave address
01
Slave address
01
Function
16
Function
16
Address Hi
00
Address Hi
02
Address Lo
0C
Address Lo
0C
Force data Hi
00
Force data Hi
00
Force data Lo
09
Force data Lo
09
CRC Lo
??
CRC Lo
??
CRC Hi
??
CRC Hi
??
MAN-SGY-012-V11 EC 5195
Fairford Electronics Ltd - Synergy Modbus RTU Programming Manual - 22nd February 2016
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MEMORY MAP
Synergy Modbus communication is based on reading or writing equipment parameters from or to the holding registers. The data
addressing is zero offset such that the parameter number corresponds to the register number.
Parameter Number (PNU)
Modbus Data Address
Decimal
Hexadecimal
PNU0000
0
0000h
PNU0001
1
0001h
:
:
:
:
:
:
PNU0128
128
0080h
:
:
:
:
:
:
MESSAGE TIMING
In the RTU mode there is no specific start or stop byte that marks the beginning or the end of a telegram. Indication of when a
new message begins or when it ends is achieved by the absence of data transmission for a minimum period of 3.5 times the
transmission time of a data byte. Thus, in case a telegram is transmitted after this minimum time has elapsed; the network
elements will assume that the first received character represents the beginning of a newtelegram.
T11 bits = Time for transmitting one byte of the telegram.
Tbetween bytes = Time between bytes.
T3,5x = Minimum interval to indicate beginning and end
of a telegram (3.5 x T11bits).
Telegram
T3.5x
Tinterval
T3.5x
T11 bits
MAN-SGY-012-V11 EC 5195
Fairford Electronics Ltd - Synergy Modbus RTU Programming Manual - 22nd February 2016
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CONNECTION
SGY-011 jumper locations
MAN-SGY-012-V11 EC 5195
Fairford Electronics Ltd - Synergy Modbus RTU Programming Manual - 22nd February 2016
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PNU Number
PNU Name
PNU Format
PNU Note Range 0 ( 0 hex ) In-Line - 1 ( 1 hex ) In-Delta Default 0 ( 0 hex ) In-Line Type Read/Write
PNU Number
PNU Name
PNU Format
PNU Note Range 0 ( 0 hex ) Off - 1 ( 1 hex ) On Default 0 ( 0 hex ) Off Type Read/Write
PNU Number
PNU Name
PNU Format
PNU Note Range 0 ( 0 hex ) Off - 1 ( 1 hex ) On Default 0 ( 0 hex ) Off Type Read/Write
PNU Number
PNU Name
PNU Format
PNU Note Range 4915 ( 1333 hex ) 30% - 13107 ( 3333 hex ) 80% Default 12288 ( 3000 hex ) 75% Type Read/Write
PNU Number
PNU Name
PNU Format
PNU Note Range 1638 ( 666 hex ) 10% - 16384 ( 4000 hex ) 100% Default 3276 ( CCC hex ) 20% Type Read/Write
Linear Scaling ( 1 = 0.006104 % )
704 ( 2C0 hex )
Percentage of the supply voltage applied to motor at the beginning of the soft start.
Start Pedestal
Increase to provide more torque If the load fails to break away.
16 bit unsigned
Decrease if the motor accelerates too quickly.
Linear Scaling ( 1 = 0.006104 % )
Off: The initial starting torque is defined by the "Start Pedestal"
Binary value
640 ( 280 hex )
Percentage of the supply voltage applied to the motor during the 'kick' period
Kick Start Pedestal
Increase to provide more torque If the load fails to break away.
16 bit unsigned
Decrease if the motor accelerates too quickly.
8 bit unsigned
Off : Operates normally. Refer to Unit Delta connection diagram in the Quick Start Guide.
Binary value
320 ( 140 hex )
Applies a short duration torque pulse to dislodge 'sticky' loads
Kick Start
On : The torque pulse is applied at start-up when complete the torque drops to the "Start Pedestal"
8 bit unsigned
In-Line : The Unit is connected in-line with a delta or star connected motor.
8 bit unsigned
In-Delta : The Unit is connected inside the Delta of the motor. The iERS function is disabled
Binary value
192 ( C0 hex )
Allows the Unit to be retro-fitted into "Delta" applications that previously used QFE / XFE (5MC)
Legacy Delta Mode
On : Operates in QFE / XFE (5MC) delta compatibility mode.
SWI-SGY-USB-V05700
Description
Text in quotes refer to a Synergy parameter or function, for example "Start Time"
i-synergy = synergy Class 10 current, i-rated = synergy Class20 / Class30 current, i-motor = motor current
[ SGY1051400 SGY2070000 SGY3023400 ]
128 ( 80 hex )
Set to correspond with Unit connection to the Motor.
Refer to connection diagrams in the Quick Start Guide.
Firing Mode
MAN-SGY-012-V11 EC 5195
Fairford Electronics Ltd - Synergy Modbus RTU Programming Manual - 22nd February 2016
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SWI-SGY-USB-V05700
Description
Text in quotes refer to a Synergy parameter or function, for example "Start Time"
i-synergy = synergy Class 10 current, i-rated = synergy Class20 / Class30 current, i-motor = motor current
[ SGY1051400 SGY2070000 SGY3023400 ]
PNU Number
PNU Name
PNU Format
PNU Note Range 0 ( 0 hex ) 0% - 16384 ( 4000 hex ) 100% Default 8192 ( 2000 hex ) 50% Type Read/Write
PNU Number
PNU Name
PNU Format
PNU Note Range 1638 ( 666 hex ) 10% - 6553 ( 1999 hex ) 40% Default 1638 ( 666 hex ) 10% Type Read/Write
PNU Number
PNU Name
PNU Format
PNU Note Range 10 ( A hex ) 10ms - 2000 ( 7D0 hex ) 2000ms Default 100 ( 64 hex ) 100ms Type Read/Write
PNU Number
PNU Name
PNU Format
PNU Note Range 1 ( 1 hex ) 1s - 300 ( 12C hex ) 300s Default 10 ( A hex ) 10s Type Read/Write
PNU Number
PNU Name
PNU Format
PNU Note Range 0 ( 0 hex ) 0s - 300 ( 12C hex ) 300s Default 0 ( 0 hex ) 0s Type Read/Write
7296 ( 1C80 hex )
The time taken to soft stop from full voltage or the iERS level to the 'Stop Pedestal'
Stop Time
Normally set between 15 and 60 seconds. Actual time to get to 'Stop Pedestal' depends on the "Stop Current Limit Level".
16 bit unsigned
If set too long the motor may reach zero speed before the end of the time set. Refer to "Automatic End Stop"
Linear Scaling ( 1 = 1 s )
7104 ( 1BC0 hex )
Time taken to soft start from the "Start Pedestal" to the end of the start
Start Time
Normally set between 5 and 30 seconds. Actual time to get to full voltage depends on the "Start Current Limit Level".
16 bit unsigned
If set too long the motor can be at speed before the end of the time set. Refer to "Automatic End Start"
Linear Scaling ( 1 = 1 s )
7040 ( 1B80 hex )
Time that the torque pulse is applied to load
Kick Start Time
Increase to provide more torque If the load fails to break away.
16 bit unsigned
Decrease if the motor accelerates too quickly.
Linear Scaling ( 1 = 1 ms )
896 ( 380 hex )
Percentage of the supply voltage applied to the motor at the end of the soft stop
Stop Pedestal
Increase if the motor crawls at the end of the soft stop.
16 bit unsigned
Decrease if a greater soft-stop effect is required at the end of the ramp.
Linear Scaling ( 1 = 0.006104 % )
768 ( 300 hex )
Adjusts the response of the "Automatic End Start (3)"
Rate End Start (3)
Increase to provide a greater smoothing effect If there are torque fluctuations that occur during the soft start.
16 bit unsigned
When set to zero the smoothing is effectively disabled.
Linear Scaling ( 1 = 0.006104 % )
MAN-SGY-012-V11 EC 5195
Fairford Electronics Ltd - Synergy Modbus RTU Programming Manual - 22nd February 2016
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SWI-SGY-USB-V05700
Description
Text in quotes refer to a Synergy parameter or function, for example "Start Time"
i-synergy = synergy Class 10 current, i-rated = synergy Class20 / Class30 current, i-motor = motor current
[ SGY1051400 SGY2070000 SGY3023400 ]
PNU Number
PNU Name
PNU Format
PNU Note Range 1 ( 1 hex ) 1s - 300 ( 12C hex ) 300s Default 5 ( 5 hex ) 5s Type Read/Write
PNU Number
PNU Name
PNU Format
PNU Note Range 20 ( 14 hex ) 20ms - 800 ( 320 hex ) 800ms Default 160 ( A0 hex ) 160ms Type Read/Write
PNU Number
PNU Name
PNU Format
PNU Note Range 0 ( 0 hex ) 0 - 10V - 1 ( 1 hex ) 4 - 20mA Default 0 ( 0 hex ) 0 - 10V Type Read/Write
PNU Number
PNU Name
PNU Format
PNU Note Range 0 ( 0 hex ) Off - 999 ( 3E7 hex ) End of list Default 0 ( 0 hex ) Off Type Read/Write
PNU Number
PNU Name
PNU Format
PNU Note Range 0 ( 0 hex ) 0% - 16384 ( 4000 hex ) Max value % Default 0 ( 0 hex ) 0% Type Read/Write
9088 ( 2380 hex )
Allows the selected function to be scaled
Scaling Level
The output will change in proportion with the selected function
16 bit unsigned
The output will be at a maximum when the selected function equals the "Scaling Level"
Linear Scaling ( 1 = 0.006104 % )
9024 ( 2340 hex )
Allows the Analogue output to be mapped to different PNU functions
Select Function
The output will change in proportion with the selected function
16 bit unsigned
By default the output will be at a maximum when the selected function equals its maximum value
514=Imeasued, 522=Overload,
161=OverloadSCR, 542=Ptotal
8960 ( 2300 hex )
Defines the physical function of the analogue output (AO)
Analogue Output Type
0-10V : The output voltage varies from 0 to 10V
8 bit unsigned
4-20mA : The output current varies from 4 to 20mA
Binary value
8320 ( 2080 hex )
Time allowed for external contactors to close.
Contactor Delay
Increase if contactors are driven by buffer relays or motor trips on phase loss when start signal applied
16 bit unsigned
Decrease if response to start signal needs to be improved
Linear Scaling ( 1 = 1 ms )
7360 ( 1CC0 hex )
The time from the End of the start to the point where the iERS saving mode becomes active.
Dwell Time
Normally set to 5 seconds to ensure the motor is at full speed before the iERS saving becomes active
16 bit unsigned
Increase to allow time for the motor to stabilise.
Linear Scaling ( 1 = 1 s )
MAN-SGY-012-V11 EC 5195
Fairford Electronics Ltd - Synergy Modbus RTU Programming Manual - 22nd February 2016
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