Shinko ACS-13A Communication Instruction Manual

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Communication Instruction Manual
This manual contains instructions for communication functions. For detailed operating instructions,
please download the detailed Communication instruction manual for the ACS-13A (C5) at
http://www.shinko-technos.co.jp/e/ by clicking "Download".

1. System configuration

Communication converter IF-400
RS-232C RS-485
ACS-13A
No. 0
Host computer
(Fig. 1-1)
2. Wiring
Wiring examples when using a communication converter IF-400
Host computer
Shielded
wire
FG
D-sub 9-pin connector
(Fig. 2-1)
Host computer
Shielded wire
D-sub 25-pin connector
(Fig. 2-2)
Shielded wire
Connect only one side of the shielded wire to the FG terminal so that current cannot flow to the
shielded wire. If both sides of the shielded wire are connected to the FG terminal, the circuit will be
closed between the shielded wire and the ground. As a result, current will run through the shielded
wire and this may cause noise. Be sure to ground the FG terminal.
Terminator (Terminal resistor)
The communication converter IF-400 (sold separately) has a built-in terminator.
The terminator is mounted at the end of the wire when connecting a personal computer with multiple
peripheral devices. The terminator prevents signal reflection and disturbance.
Do not connect terminator with the communication line because each ACS-13A has built-in pull-up
and pull-down resistors instead of a terminator.
6. Modbus protocol
6.1 Transmission mode
There are 2 transmission modes (ASCII and RTU) in Modbus protocol.
6.2 ASCII mode
Hexadecimal (0 to 9, A to F), which is divided into high order (4-bit) and low order (4-bit)
out of 8-bit binary data in command is transmitted as ASCII characters.
Data format Start bit : 1 bit
Data bit : 7 bits
Parity : Even (No parity/Odd), Selectable
Stop bit : 1 bit (2 bits), Selectable
Error detection : LRC (Longitudinal Redundancy Check)
Data interval : 1 second or less
(1) Message configuration
ASCII mode message is configured to start by Header [: (colon)(3AH)] and end by Delimiter
[CR (carriage return) (0DH) + LF (Line feed)(0AH)].
Header Slave Function Error check
Data
(:) address code LRC
Slave address
Slave address is an individual instrument number on the slave side and is set within the
range 0 to 95 (00H to 5FH).
The master identifies slaves by the slave address of the requested message.
The slave informs the master which slave is responding to the master by placing its own
address in the response message.
Slave address 0 (00H, broadcast address) can identify all the slaves. However slaves
do not respond.
Function code
The function code is the command code for the slave to undertake the following action types.
Function code Contents
03 (03H) Reading the set value and information from slaves
06 (06H) Setting to slaves
Function code is used to discern whether the response is normal (acknowledgement) or
if any error (negative acknowledgement) has occurred when the slave returns the response
message to the master.
When acknowledgement is returned, the slave simply returns the original function code.
When negative acknowledgement is returned, the MSB of the original function code is
set as 1 for the response.
For example, when the master sends request message setting 10H to the function code
by mistake, slave returns 90H by setting the MSB to 1, because the former is an illegal
function.
For negative acknowledgement, the exception codes below are set to the data of
response message and returned to the master in order to inform it of what kind of error
has occurred.
Exception code Contents
1 (01H) Illegal function (Non-existent function)
2 (02H) Illegal data address (Non-existent data address)
3 (03H) Illegal data value (Value out of the setting range)
17 (11H) Shinko error code 4 (Status unable to be set, e.g. AT is performing)
18 (12H) Shinko error code 5 (During setting mode by keypad operation)
Data
Data depends on the function code.
A request message from the master is composed of data item, number of data and setting
data.
A response message from the slave is composed of number of bytes, data and exception
code in negative acknowledgements.
The number of data to be dealt with in one message is "1". Therefore, the number of
data is fixed as (30H) (30H) (30H) (31H).
Effective range of data is -32768 to 32767 (8000H to 7FFFH).
Error check: 2-character data to detect communication errors.
Refer to (2) Error check of ASCII mode below.
(2) Error check of ASCII mode
After calculating LRC (Longitudinal Redundancy Check) from the slave address to the end
of data, the calculated 8-bit data is converted to two ASCII characters and are appended to
the end of message.
[How to calculate LRC]
1 Create a message in RTU mode.
Add all the values from the slave address to the end of data. This is assumed as X.
2
Make a complement for X (bit reverse). This is assumed as X.
3
Add a value of 1 to X. This is assumed as X.
4
5 Set X as an LRC to the end of the message.
6 Convert the whole message to ASCII characters.
6.3 RTU mode
8-bit binary data in command is transmitted as it is.
Data format Start bit : 1 bit
Data bit : 8 bits
Parity : No parity (Even, Odd), Selectable
Stop bit : 1 bit (2 bits), Selectable
Error detection: CRC-16 (Cyclic Redundancy Check)
Data interval: 3.5 characters transmission time or less
(1) Message configuration
RTU mode is configured to start after idle time is processed for more than 3.5 character
transmissions and end after idle time is processed for more than 3.5 character transmissions.
3.5 idle Slave Function Error check
Data
characters address code CRC-16
Slave address : The same as that of ASCII mode
Function code : The same as that of ASCII mode
Data : Data depends on the function code.
3. Communication parameter setting
ACS-13A (C5)
Set each communication parameter following the procedures below.
No. ACS11CJE4 2011.04 (1)
(2)
(3)
ACS-13A ACS-13A
No. 1 No. 30
(4)
(5)
(6)
ACS-13A (Max. 31 units)
Shielded wire
(7)
FG
4. Communication procedure
Shielded wire
Communication starts with command transmission from the host computer (Master) and
ends with the response of the ACS-13A (Slave).
Master
FG
FG
Command
Data
Command
Acknowledgement
To ACS-13A
Command
Negative
Acknowledgement
Command
No response
RS-485 communication timing
Master side (Notice on programming)
Set the program so that the master can disconnect the transmitter from the communication
line within a 1 character transmission period after sending the command in preparation for
reception of the response from the slave.
To avoid the collision of transmissions between the master and the slave, send the next
command after carefully checking that the master received the response.
If a response to the command is not returned due to communication errors, set the Retry
Processing so as to send the command again. (Retry twice or more is recommended.)
Slave side
When the slave starts transmission through a communication line, the slave is arranged so as
to provide an idle status (mark status) transmission period of 1 or more characters before
sending the response to ensure synchronization on the receiving side.
The slave is arranged so as to disconnect the transmitter from the communication line within
a 1 character transmission period after sending the response.
A request message from the master is composed of data item, number of data and
setting data.
A response message from the slave is composed of number of bytes, data and
exception codes in negative acknowledgement.
The number of data to be dealt with in one message is "1". Therefore the number of
data is fixed as 0001H. The number of response byte is 02H.
Effective range of data is -32768 to 32767 (8000H to 7FFFH).
Error check: 16-bit data to detect communication errors. Refer to "(2) Error check of RTU mode".
(2) Error check of RTU mode
After calculating CRC-16 (Cyclic Redundancy Check) from the slave address to the end of
data, the calculated 16-bit data is appended to the end of message in sequence from low
order to high order.
How to calculate CRC-16
In the CRC-16 system, the information is divided by polynomial series. The remainder is
added to the end of the information and transmitted. The generation of polynomial series is
as follows. (Generation of polynomial series: X
Delimiter Delimiter
Initialize the CRC-16 data (assumed as X) (FFFFH).
1
(CR) (LF)
2 Calculate exclusive OR (XOR) with the 1st data and X. This is assumed as X.
3 Shift X one bit to the right. This is assumed as X.
4 When a carry is generated as a result of the shift, XOR is calculated by X of
fixed value (A001H). This is assumed as X. If a carry is not generated, go to step
5 Repeat steps
6
XOR is calculated with the next data and X. This is assumed as X.
7 Repeat steps
8 Repeat steps
9
Set X as CRC-16 to the end of the message in sequence from low order to high order.
7. Communication command table
Shinko
command type function code
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
20H/50H
3.5 idle
20H/50H
characters
20H/50H
20H/50H
Proceed to Auxiliary function setting mode.
Press the key for approx. 3sec while pressing the
key in the PV/SV display mode.
+
The unit proceeds to Auxiliary function setting mode.
(Approx.3sec)
Auxiliary function setting mode
Press the key twice.
The unit proceeds to Communication protocol selection.
(Twice)
Communication protocol selection
Select the communication protocol.
: Shinko protocol (Default)
: Modbus ASCII mode
: Modbus RTU mode
Instrument number setting
Set the instrument number of the controller individually
when communicating by connecting plural instruments.
0 to 95 (Default: 0)
Communication speed selection
Set the communication speed equal to that of the host
computer.
: 2400bps
: 4800bps
: 9600bps (Default)
: 19200bps
Data bit/Parity selection
Select the data bit and parity.
: 8 bits/No parity
: 7 bits/No parity
: 8 bits/Even
: 7 bits/Even (Default)
: 8 bits/Odd
: 7 bits/Odd
Stop bit selection
Select the stop bit.
: 1 (Default)
: 2
Slave • Response with data
When the master sends the reading command, the slave
responds with the corresponding set value or current
status.
• Acknowledgement
When the master sends the setting command, the slave
responds by sending the acknowledgement after the
processing is terminated.
• Negative acknowledgement
When the master sends a non-existent command or
value out of the setting range, the slave returns a
negative acknowledgement.
• No response
The slave will not respond to the master in the following cases:
• Global address, Broadcast address (Modbus protocol) is set.
• Communication error (framing error, parity error)
• Checksum error (Shinko protocol)
• LRC discrepancy (Modbus ASCII mode)
• CRC-16 discrepancy (Modbus RTU mode)
16 15 2
+ X + X + 1)
3 and 4 until shifting 8 times.
3 to 5 .
3
to 5 up to the last data.
Modbus
Data item
03H/06H 0001H SV Set value, Decimal point ignored
03H/06H 0003H Auto-tuning/Auto-reset 0000H: Cancel
0001H: Perform
03H/06H 0004H OUT1 proportional band Set value, Decimal point ignored
03H/06H 0005H OUT2 proportional band Set value, Decimal point ignored
03H/06H 0006H Integral time Set value
03H/06H 0007H Derivative time Set value
03H/06H 0008H OUT1 proportional cycle Set value
03H/06H 0009H OUT2 proportional cycle Set value
03H/06H 000BH Alarm 1 value Set value, Decimal point ignored
03H/06H 000CH Alarm 2 value Set value, Decimal point ignored
03H/06H 000FH Heater burnout alarm value Set value, Decimal point ignored
03H/06H 0012H Set value lock 0000H: Unlock 0002H: Lock 2
0001H: Lock 1 0003H: Lock 3
03H/06H 0015H Sensor correction Set value, Decimal point ignored
03H/06H 0016H Overlap/Dead band Set value
03H/06H 0018H Scaling high limit Set value, Decimal point ignored
03H/06H 0019H Scaling low limit Set value, Decimal point ignored
03H/06H 001AH Decimal point place 0000H: xxxx
0001H: xxx.x 0003H: x.xxx
03H/06H 001BH PV filter time constant Set value, Decimal point ignored
03H/06H 001CH OUT1 high limit Set value
03H/06H 001DH OUT1 low limit Set value
03H/06H 001EH OUT1 ON/OFF hysteresis Set value, Decimal point ignored
03H/06H 001FH OUT2 action mode 0000H: Air cooling
0001H: Oil cooling
0002H: Water cooling
03H/06H 0020H OUT2 high limit Set value
03H/06H 0021H OUT2 low limit Set value
03H/06H 0022H OUT2 ON/OFF hysteresis Set value, Decimal point ignored
03H/06H 0023H Alarm 1 type
0000H: No alarm action 0005H: Process high alarm
0001H: High limit alarm 0006H: Process low alarm
0002H: Low limit alarm 0007H: High limit w/standby
0003H: H/L limits alarm 0008H: Low limit w/standby
0004H: H/L limit range 0009H: H/L limits w/standby
03H/06H 0024H Alarm 2 type The same as Alarm 1 type
03H/06H 0025H Alarm 1 hysteresis Set value, Decimal point ignored
03H/06H 0026H Alarm 2 hysteresis Set value, Decimal point ignored
03H/06H 0029H Alarm 1 action delay timer Set value
03H/06H 002AH Alarm 2 action delay timer Set value
03H/06H 0032H Indication when output 0000H: OFF indication
OFF 0001H: No indication
0002H: PV indication
0003H: PV+ Alarm action
03H/06H 0033H SV rise rate Set value, Decimal point ignored
03H/06H 0034H SV fall rate Set value, Decimal point ignored
03H/06H 0037H Control output OUT/OFF 0000H: Control output ON
0001H: Control output OFF
03H/06H 0038H Auto/Manual control 0000H: Automatic control
0001H: Manual control
03H/06H 0039H Manual control MV Set value
03H/06H 0040H Alarm 1 Energized/ 0000H: Energized
De-energized 0001H: De-energized
03H/06H 0041H Alarm 2 Energized/ 0000H: Energized
De-energized 0001H: De-energized
5. Shinko protocol
5.1 Transmission mode
Shinko protocol is composed of ASCII codes.
Hexadecimal (0 to 9, A to F), which is divided into high order (4-bit) and low order (4-bit) out
of 8-bit binary data in command is transmitted as ASCII characters.
Data format Start bit : 1
Data bit : 7 bits
Parity : Even
Stop bit : 1 bit
Error detection: Checksum
5.2 Command configuration
All commands are composed of ASCII.
The data (set value, decimal) is converted to hexadecimal numbers.
A negative number is represented by 2's complement.
Numerals written below the command represent number of characters.
(1) Setting command
Header Address Sub address
(02H) (20H)
1 1 1
(2) Reading command
Header Address Sub address
(02H) (20H)
1 1 1
(3) Response with data
Header Address Sub address
(06H) (20H)
1 1 1
(4) Acknowledgement
Header Address Checksum Delimiter
(06H)
1 1 2
(5) Negative acknowledgement
Header Address Error code Checksum Delimiter
(15H)
1 1 1
Header : Control code to represent the beginning of the command or the response.
ASCII codes are used.
Setting command, Reading command : STX (02H) fixed
Response with data, Acknowledgement : ACK (06H) fixed
Negative acknowledgement
Instrument number (Address): Numbers by which the master discerns each slave.
Instrument number 0 to 94 and Global address 95.
ASCII codes (20H to 7FH) are used by adding 20H to instrument numbers
0 to 95 (00H to 5FH). 95 (7FH) is called Global address, which is used
when the same command is sent to all the slaves connected. However,
the response is not returned.
Sub address : 20H fixed
Command type: Code to discern Setting command (50H) and Reading command (20H)
Data item : Data classification of the command object. Composed of hexadecimal
4 digits, using ASCII. (Refer to 7. Communication command table)
Data : The contents of data (set value) differ depending on the setting command.
Composed of hexadecimal 4 digits, using ASCII.
(Refer to 7. Communication command table)
Checksum : 2-character data to detect communication errors (Refer to section 5.3.)
Delimiter : ASCII code ETX (03H) fixed. Control code to represent the end of command.
Error code : Represents an error type with ASCII codes.
1 (31H)-----Non-existent command
2 (32H)-----Not used
3 (33H)-----Setting out of the setting range
4 (34H)-----Status unable to be set (e.g. AT is performing)
5 (35H)-----During setting mode by keypad operation
5.3 Checksum calculation
Checksum is used to detect receiving errors in the command or data.
Set the program for the master side as well to calculate the checksum of the response data
from the slaves so that the communication errors can be checked.
The ASCII code (hexadecimal) corresponding to the characters which range from the
address to that before the checksum is converted to binary notation, and the total value is
calculated. The lower 2-digits of the total value are converted to 2's complement, and then
to hexadecimal numbers, that is, ASCII code for the checksum.
Checksum calculation example
SV: 600 (0258H) Address (instrument number): 0 (20H)
• 1's complement: Reverse each binary bit. 0 will become 1 and vice versa.
• 2's complement: Add 1 to 1's complement.
Checksum calculation range
[e.g.]
P 0 0
STX
[Characters above are represented by ASCII]
02H 20H 20H 50H 30H 30H 30H
[Hexadecimal] [Binary]
20H 0010 0000
20H 0010 0000
50H 0101 0000
30H 0011 0000
30H 0011 0000
30H 0011 0000
31H 0011 0001
30H 0011 0000
32H 0011 0010
35H 0011 0101
+ 38H 0011 1000
10 0010 0000
Shinko Modbus
command type function code
20H/50H 03H/06H 0044H
3 and the
5
.
20H/50H 03H/06H 0045H Direct/Reverse action
20H/50H 03H/06H 0047H AT bias
Data
20H/50H 03H/06H 0048H ARW
20H/50H 03H/06H 0049H Heater burnout alarm 2 value Set value, Decimal point ignored
20H/50H 03H/06H 004AH OUT1 rate-of-change
20H/50H 03H/06H 0050H
20H/50H 03H/06H 0051H
20H/50H 03H/06H 0052H PV color range
20H/50H 03H/06H 0053H Backlight time
50H 06H 0070H Key operation change
0002H: xx.xx
20H 03H 0080H PV (Process variable)
20H 03H 0081H OUT1 MV
20H 03H 0082H OUT2 MV
20H 03H 0083H SV (When SV rises or falls) Current SV (Desired value),
20H 03H 0085H
20H 03H 0086H CT1 current value
20H 03H 0087H CT2 current value

8. Specifications

Cable length : 1.2km (Max.), Cable resistance: 50
necessary, but if used, use 120
Communication line : EIA RS-485
Communication method: Half-duplex communication
Communication speed : 9600bps (2400, 4800, 19200bps) Selectable by keypad
Synchronization method : Start-stop synchronization
Code : ASCII, Binary
Error correction : Command request repeat system
Shinko Technos. Co., Ltd.
2-5-1, Senbahigashi, Minoo, Osaka, Japan TEL: 81-72-727-6100 FAX: 81-72-727-7006
Command Data Checksum Delimiter
Data
type(50H) item (03H)
1 4 4 2 1
Command Data Checksum Delimiter
type(20H) item (03H)
1 4 2 1
Command Data Checksum Delimiter
Data
type(20H) item (03H)
1 4 4 2 1
(03H)
1
(03H)
2 1
: NAK (15H) fixed
0 1 0 2 5 8 E 0
ETX
45H 30H
31H 30H 32H 35H 38H 03H
Checksum
[1's complement] 1101 1111
+ 1
[2's complement] 1110 0000
[Hexadecimal]
E 0
[ASCII] 45H 30H
Checksum
Data item Data
Input type
0000H: K -200 to 1370 000FH: K -320 to 2500
0001H: K -200.0 to 400.0 0010H: K -320.0 to 750.0
0002H: J -200 to 1000 0011H: J -320 to 1800
0003H: R 0 to 1760 0012H: R 0 to 3200
0004H: S 0 to 1760 0013H: S 0 to 3200
0005H: B 0 to 1820 0014H: B 0 to 3300
0006H: E -200 to 800 0015H: E -320 to 1500
0007H: T -200.0 to 400.0 0016H: T -320.0 to 750.0
0008H: N -200 to 1300 0017H: N -320 to 2300
0009H: PL- 0 to 1390 0018H: PL- 0 to 2500
000AH: C(W/Re5-26) 0019H: C(W/Re5-26)
0 to 2315 0 to 4200
000BH: Pt100 001AH: Pt100
-200.0 to 850.0 -320.0 to 1500.0
000CH: JPt100 001BH: JPt100
-200.0 to 500.0 -320.0 to 900.0
000DH: Pt100 001CH: Pt100
-200 to 850 -320 to 1500
000EH: JPt100 001DH: JPt100
-200 to 500 -320 to 900
001EH: 4 to 20mA -2000 to 10000
001FH: 0 to 20mA -2000 to 10000
0020H: 0 to 1V -2000 to 10000
0021H: 0 to 5V -2000 to 10000
0022H: 1 to 5V -2000 to 10000
0023H: 0 to 10V -2000 to 10000
0000H: Reverse action
0001H: Direct action
Set value
Set value
Set value
Backlight
0000H: All are backlit
0001H: PV display backlit
0002H: SV display backlit
0003H: Action indicators backlit
0004H: PV+SV displays backlit
0005H: PV+Action indicators backlit
0006H: SV+Action indicators backlit
PV color
0000H: Green 0004H: When Alarm ON:
0001H: Red Orange Red
0002H: Orange 0005H: PV continuous change
0003H: W hen Alarm ON: 0006H: PV continuous
Green Red change+ Alarm ON, Red
Set value, Decimal point ignored
Set value
0000H: No action
flag clearing 0001H: Clear all
Current PV (Process vari-
able), Decimal point ignored
OUT1 MV, Decimal point ignored
OUT2 MV, Decimal point ignored
Decimal point ignored
Status flag
0
2 : OUT1 0: OFF, 1: ON
(DC current output: Not fixed)
1
2 : OUT2 0: OFF, 1: ON
2
2 : Alarm 1 output 0: OFF, 1: ON
3
2 : Alarm 2 output 0: OFF, 1: ON
6
2 : 0: OFF, 1: ON
Heater burnout alarm output
(When sensor burnout, 0: OFF)
8
2 : Overscale 0: OFF, 1: ON
9
2 : Underscale 0: OFF, 1: ON
10
2 : Control output OUT/OFF 0: ON, 1: OFF
11
2 : During AT/Auto-reset 0: OFF, 1: DuringAT/Auto-reset
12
2 : OUT/OFF key function 0: OUT/OFF function
1: Auto/Manual control
14
2 : Auto/Manual control 0: Auto, 1: Manual
15
2 : Change in key operation 0: No, 1: Yes
4 5 7 13 Not used, Always 0
2 , 2 , 2 , 2
CT1 current value,
Decimal point ignored
CT2 current value,
Decimal point ignored
or less (Terminators are not
or more on one side.)
URL: http://www.shinko-technos.co.jp