RKC INSTRUMENT Z-TIO Host Communication Quick Instruction Manual

Host Communication
Module Type Controller SRZ
Z-TIO
Quick Instruction
Temperature Control Module
Manual
[for Host Communication]
All Rights Reserved, Copyright  2006, RKC INSTRUMENT INC.
Thank you for purchasing this RKC product. In order to achieve maximum performance and
ensure proper operation of your new instrument, carefully read all the instructions in this
manual. Please place this manual in a convenient location for easy reference.
This manual describes the host communication, module address setting of the Z-TIO
module. For the address setting of any other module, refer to the Instruction Manual for the
respective module. For detailed handling procedures and various function settings, please
refer to separate SRZ Instruction Manual (IMS01T04 -E ).
The above manuals can be downloaded from our website:
URL: http://www.rkcinst.com/english/manual_load.htm
1. COMMUNICATION SETTING
Set communication setting before mounting and wiring of the Z-TIO.
CAUTION
Do not separate the module mainframe from the base with the power turned on. If so,
instrument failure may result.
1.1 Module Address Setting
Set an address for the module using a small blade screwdriver.
Address setting switch
Setting range: 0 to F [0 to 15: Decimal]
Factory set value: 0
• For Modbus, the value obtained by adding "1" to the set address
corresponds to the address used for the actual program.
• To avoid problems or malfunction, do not duplicate an address on the
same communication line.
1.2 Protocol Selections and Communication Speed Setting
Use the DIP switch on the right side of module to select communication speed, data bit
configuration and protocol. The data changes become valid when the power is turned on
again or when changed to RUN/STOP.
DIP switch
Module
mainframe
Right side view
OFF ON
(The above figure is for the terminal type. However, the switch positions are the same for the connector type.)
1 2 Communication speed
OFF OFF 4800 bps
ON OFF 9600 bps
OFF ON 19200 bps
ON ON 38400 bps
Factory set value: 19200 bps
3 4 5 Data bit configuration
OFF OFF OFF Data 7-bit, without parity, Stop 1-bit *
ON OFF OFF Don't set this one
OFF ON OFF Data 7-bit, Even parity, Stop 1-bit *
ON ON OFF Data 7-bit, Odd parity, Stop 1-bit *
OFF OFF ON Data 8-bit, without parity, Stop 1-bit
ON OFF ON Don't set this one
OFF ON ON Data 8-bit, Even parity, Stop 1-bit
ON ON ON Data 8-bit, Odd parity, Stop 1-bit
* When the Modbus communication protocol is selected, this setting becomes invalid.
Factory set value: Data 8-bit, without parity, Stop 1-bit
6 Protocol
OFF RKC communication
ON Modbus
Factory set value: RKC communication
• Switch No. 7 and 8 must be always OFF. Do not set to ON.
• When two or more modules are connected on the same communication
line, the DIP switch settings of all modules must be the same.
2. CONNECTION TO HOST COMPUTER
!
WARNING
IMS01T02-E3 To prevent electric shock or instrument failure, turn off the
power before connecting or disconnecting the instrument and
peripheral equipment.
Connect a termination resistor between the communication terminals (No.3
and No. 4) of the module at the end of the communication line from the host
computer.
The cable must be provided by the customer.
The Z-TIO has RS-485 communication terminals for RKC communication or Modbus/RTU
communication protocol. Communication terminals are on the base side.
(Base) Communication terminals (RS-485)
3 4 5 Terminal No.
3 Send data/Receive data
4 Send data/Receive data
5
Connection to the RS-485 port of the host computer (master)
Module type controller SRZ
Pair wire
Z-TIO module
(Slave)
RS-485
(−)
T/R (A) 3
T/R (B) 4
(+)
SG 5
Shielded twisted
pair wire
Connected by
the internal
Z-TIO module
(Slave) communication line
(−)
T/R (A) 3
R
T/R (B) 4
(+)
R: Termination resistor (Example: 120 Ω 1/2 W)
SG 5
Up to 16 Z-TIO modules can be connected.
The maximum number of SRZ modules (including other function modules) on the same communication line is 31.
Connection to the RS-232C port of the host computer (master)
Module type controller SRZ
Z-TIO module
(Slave)
Pair wire
RS-485
(−)
T/R (A) 3
T/R (B) 4
(+)
SG 5
Shielded twisted
pair wire
Connected by
Z-TIO module
the internal
(Slave)
communication line
(−)
T/R (A) 3
R
T/R (B) 4
(+)
R: Termination resistor
(Example: 120 Ω 1/2 W)
SG 5
Up to 16 Z-TIO modules can be connected.
The maximum number of SRZ modules (including other function modules) on the same communication line is 31.
Connection to the USB of the host computer (master)
Module type controller SRZ
Z-TIO module
(Slave)
Pair wire
RS-485
(−)
T/R (A) 3
T/R (B) 4
(+)
SG 5
Shielded twisted
pair wire
Connected by
Z-TIO module
(Slave)
the internal
communication line
(−)
T/R (A) 3
R
T/R (B) 4
(+)
R: Termination resistor
SG 5 (Example: 120 Ω 1/2 W)
Up to 16 Z-TIO modules can be connected.
The maximum number of SRZ modules (including other function modules) on the same communication line is 31.
3. COMMUNICATION REQUIREMENTS
Processing times during data send/receive
When the host computer is using either the polling or selecting procedure for communication,
the following processing times are required for controller to send data:
- Response wait time after controller sends BCC in polling procedure
- Response wait time after controller sends ACK or NAK in selecting procedure
RKC communication (Polling procedure)
Procedure details
Response send time after controller receives ENQ
Response send time after controller receives ACK
Response send time after controller receives NAK
Response send time after controller sends BCC
RKC communication (Selecting procedure)
Procedure details
Response send time after controller receives BCC
Response wait time after controller sends ACK
Signal name Symbol Response wait time after controller sends NAK
T/R (A)
Modbus
T/R (B)
Procedure details
Signal ground SG
Read holding registers [03H]
Response send time after the slave receives the query message
Preset single register [06H]
Response send time after the slave receives the query message
Diagnostics (loopback test) [08H]
Host computer (Master)
Response send time after the slave receives the query message
Preset multiple registers [10H]
Response send time after the slave receives the query message
(−)
T/R (A)
RS-485 (2-wire system) send/receive timing
T/R (B)
(+)
R
SG
RS-485 communication is conducted through two wires, therefore the transmission and
reception of data requires precise timing.
Polling procedure
Possible
Send data
Host (Possible/Impossible)
Impossible
computer
Sending status
Possible
Send data
(Possible/Impossible)
Impossible
SRZ
Sending status
a: Response send time after the controller receives [ENQ] + Interval time
b: Response send time after the controller sends BCC
c: Response send time after the controller receives [ACK] + Interval time or
Response send time after the controller receives [NAK] + Interval time
Host computer (Master)
Selecting procedure
Possible
Send data
Host (Possible/Impossible)
Impossible
computer
Sending status
RS-232C
Possible
Send data
(Possible/Impossible)
T/R (A) Impossible
SRZ
T/R (B) Sending status
R
SG
a: Response send time after the controller receives BCC + Interval time
b: Response wait time after the controller sends ACK or Response wait time after the controller sends NAK
RS-232C/RS-485 converter *
* When the host computer (master) uses
To switch the host computer from transmission to reception, send data must be on
Windows95/98/Me/NT/2000/XP, use a
RS-232C/RS-485 converter with an line.
automatic send/receive transfer function.
Recommended RS-232C/RS-485 converter:
The following processing times are requires for the controller to process data.
CD485, CD485/Vmanufactured by Data Link,
- In Polling procedure, Response wait time after the controller sends BCC
Inc. or equivalent
- In Selecting procedure, Response wait time after the controller sends ACK or NAK
Fail-safe
A transmission error may occur with the transmission line disconnected, shorted or set to the
high-impedance state. In order to prevent the above error, it is recommended that the
Host computer (Master)
fail-safe function be provided on the receiver side of the host computer. The fail-safe function
can prevent a framing error from its occurrence by making the receiver output stable to the
Connected to USB port
MARK (1) when the transmission line is in the high-impedance state.
of a personal computer
Modbus data processing precautions
USB cable
(COM-K
1 SG
accessory)
• Data with decimal point is treated as data without decimal point on the Modbus protocol.
2 T/R (A)
• With Modbus protocol, the maximum number of channels per slave address is 4.
• Do not write data to any address which is not described in a list of data maps.
3 T/R(B)
• If data range or address error occurs during data writing, the data written before error is in
4
Connected to
Unused
USB connector effect.
5
• When communication data is sent to the controller that does not correctly match the
USB communication
converter COM-K * connected module or selected functions on the modules, the data will be invalid. If the
* The termination resistor is built-in to
data is within a setting range, no error message is sent from the controller. The read data
the COM-K.
is "0".
• Send the next command message at time intervals of 24 bits after the master receives the
response message.
4. HOST COMMUNICATION DATA MAP
Explanation of items shown in the communication data maps are as follows.
• Modbus register address (HEX: Hexadecimal
For a 4CH type, follow the chart exactly. For the 2CH type, the register
addresses for Channel 3 and 4 are unused. For communication parameters for
heat/cool control, the register addresses for Channel 2 and 4 are unused.
Example: The register addresses of 0092 (HEX) to 0095 (HEX)
CH#
Time
50 ms max.
CH1
50 ms max.
CH2
50 ms max.
CH3
2 ms max.
CH4
Time • Digits
The number of communication data digits in RKC communication
50 ms max.
2 ms max. • Attribute
2 ms max.
RO: Read only data
R/W: Read and Write data (Host computer
• Data
Time
RKC communication
50 ms max.
ASCII code data (Example: 7 digits)
30 ms max.
Most significant
30 ms max.
digit
100 ms max.
Symbols used in MAP
♣: Parameters only used for heat/cool control or position proportioning control,
therefore data for CH2 and CH4 are unused.
: Parameters which can be used in multi-memory area function.
♦: Data for each module
For details on the data, see the SRZ Instruction Manual (IMS01T04-E ).
Communication data (RKC communication/Modbus)
RKC
A N
E E
- - - - - Name Iden-
O N C or A
T Q K K
tifier
♦
a b c
Model code ID
♦
ROM version VR
S B
T - - - - - C Measured value M1
X C
(PV)
♠
Comprehensive AJ
event state
♠
S B
T - - - - - C
X C
a b
A N
C or A
K K
Operation mode L0
state monitor
♠
Error code ER
♦
DEC: Decimal)
Address
･ ･
･
0092
0093
(This address is unused with heat/cool control.)
0094
(This address is unused with 2CH type.)
0095 (This address is unused with heat/cool control or 2CH type.)
･ ･
･
(Host computer The controller)
The controller)
Modbus
16-bit data
Least significant ........................................
......
b15 b0
digit
♠: Data for each channel
Modbus
Attri- Factory
register address Digits Data range
bute set value
HEX DEC
  32 RO Model code (character) 
  8 RO ROM version 
7 RO Input scale low to 
0000 0
･ ･ ･ ･ Input scale high
･ ･
0003 3
7 RO RKC communication 
0004 4
･ ･ ･ ･ Least significant digit to 4th digit:
･ ･
Event 1 state
0007 7
to Event 4 state
5th digit: Heater break alarm
state
6th digit: Temperature rise
completion
7th digit: Burnout
Data 0: OFF 1: ON

Modbus
b0 to b3: Event 1 state
to Event 4 state
b4: Heater break alarm
state
b5: Temperature rise
completion
b6: Burnout
b7 to b15: Unused
Data 0: OFF 1: ON
[Decimal number: 0 to 127]
7 RO RKC communication 
0008 8
･ ･ ･ ･ Least significant digit:
･ ･
Control STOP
000B 11
2nd digit: Control RUN
3rd digit: Manual mode
4th digit: Remote mode
5th digit to Most significant digit:
Unused
Data 0: OFF 1: ON
Modbus 
b0: Control STOP
b1: Control RUN
b2: Manual mode
b3: Remote mode
b4 to b15: Unused
Data 0: OFF 1: ON
[Decimal number: 0 to 15]
7 RO RKC communication 
000C 12
1: Adjustment data error
2: Data back-up error
4: A/D conversion error
32: Logic output data error
Modbus 
b0: Adjustment data error
b1: Data back-up error
b2: A/D conversion error
b3: Unused
b4: Unused
b5: Logic output data error
b6 to b15: Unused
Data 0: OFF 1: ON
[Decimal number: 0 to 63]
(Continued on the next page )