RKC INSTRUMENT COM-ML-1 Quick Instruction Manual


Ethernet Communication Converter
Quick Instruction
COM-ML-1
[For SRZ]
Manual
All Rights Reserved, Copyright  2018, RKC INSTRUMENT INC.
IMR02E14-E1
Thank you for purchasing this RKC product. In order to achieve maximum performance and
ensure proper operation of the instrument, carefully read all the instructions in this manual.
Please place the manual in a convenient location for easy reference.
This manual describes the basic operation method of the COM-ML-1. For the installation, the
communication data, the detailed handling procedures and various function settings, please
refer to the following separate manuals.
 COM-ML-1 [For SRZ] Installation Manual (IMR02E13-E):
Enclosed with COM-ML
 COM-ML-1 [For SRZ] Host Communication Data List (IMR02E15-E): Enclosed with COM-ML
 COM-ML-1 [For SRZ] PLC Communication Data List (IMR02E16-E): Enclosed with COM-ML
 COM-ML-1 [For SRZ] Instruction Manual (IMR02E17-E):
Separate
(Download or sold separately)
These manuals can be downloaded from the official RKC website:
http://www.rkcinst.com/english/manual_load.htm
1. HANDLING PROCEDURES
Host communication settings
Refer to 2. HOST COMMUNICATION SETTINGS
 Refer to COM-ML-1 [For SRZ] Installation Manual
Installation and wiring
(IMR02E13-E).
 For information on the SRZ, refer to Z-TIO Instruction
Manual (IMS01T01-E), Z-DIO Instruction Manual
(IMS01T03-E) or Z-CT Instruction Manual
(IMS01T16-E).
 Refer to 3. COMMUNICATION SETTING OF FUNCTION
Function module settings
MODULES
 Refer to Z-TIO Host Communication Quick Instruction
Manual (IMS01T02-E), Z-DIO Instruction Manual
(IMS01T03-E) or Z-CT Instruction Manual
(IMS01T16-E).
IP address settings
Refer to 4. IP ADDRESS SETTINGS.
PLC communication
Refer to 5. PLC COMMUNICATION ENVIRONMENT
environment settings
SETTINGS [Only PLC communication]
Other communication
Refer to 6. OTHER COMMUNICATION DATA SETTINGS.
data settings
2. HOST COMMUNICATION SETTINGS
 To prevent electric shock or instrument failure, always turn off the power
before setting the switch.
 To prevent electric shock or instrument failure, never touch any section
other than those instructed in this manual.
2.1 Address Settings
Set the address for host communication. Use a small flat-blade screwdriver to configure the
setting.
Set the address such that it is different to the other addresses on the same line.
Otherwise, problems or malfunction may result.
Host communication
address switch
Setting range:
0 to F [0 to 15: Decimal number]
Factory set value: 0
2.2 DIP Switch Settings
Use the DIP switch to set the speed and protocol of host communication, default IP address setting,
and DIP switch enable/disable.
DIP switch
Left side view
ON OFF
1 2 Host communication speed
OFF OFF 4800 bps
ON OFF 9600 bps

Factory set value:
OFF ON 19200 bps
19200 bps
ON ON 38400 bps
3 Communication protocol/Data bit configuration
RKC communication

Factory set value:
OFF
(Data 8-bit, Without parity, Stop 1-bit)
RKC
Modbus
communication *
ON
(Data 8-bit, Without parity, Stop 1-bit)
* Factory set value when the Host communication protocol is not specified
at the time of ordering.
4 5
OFF OFF Fixed
6 7 Default IP address setting
 Factory set value:
OFF OFF Do not execute the default IP address setting
Do not execute
ON OFF Do not set this one
the default IP
OFF ON Do not set this one
address setting
ON ON Execute the default IP address setting *
* Refer to 4.2 Default IP Address Setting .
8 DIP switch enable/disable

Factory set value:
OFF Enable (enable the DIP switch settings)
Enabled
Disable (enable the host communication or loader communication
ON
settings)*
* The only host communication or loader communication settings that are
enabled are the host communication speed and protocol and the data bit
configuration.
When the communication protocol is set with the DIP switch, the data bit configuration is
automatically set to "Data 8-bit, Without parity, Stop 1-bit." To change to another data bit
configuration, set the configuration in host communication or loader communication.
If you wish to set the data bit configuration, host communication speed, and communication
protocol in host communication or loader communication, first set DIP switch No. 8 to ON.
3. COMMUNICATION SETTING OF FUNCTION
MODULES
3.1 Address Setting of Function Modules
Only make the module address setting to make the function module (Z-TIO, Z-DIO and Z-CT)
communication settings.
The SRZ unit performs internal communication (RS-485) between the COM-ML-1 (hereafter called
COM-ML) and the function module (Z-TIO, Z-DIO and Z-CT), so the communication protocol,
communication speed and data bit configuration do not need to be set.
A module address is set for each function module type. In this example, the module address is set to
the address shown below.
To avoid problems or malfunction, do not duplicate an address in a function module
of the same type on the same communication line.
0 1 0 0
Setting of the address setting switch (module address)
Z-TIO module
Z-DIO module
Z-CT module
Address setting switch
Setting range:
0 to F
Z-TIO Z-DIO
[0 to 15: Decimal number]
module 1 module 1
Factory set value: 0
Z-TIO Z-CT
module 2 module 1
3.2 For the SRZ Unit's Temperature Control Channel
Setting the Z-TIO module address determines the temperature control channel number used for
communication. To each Z-TIO module address, the relevant temperature control channel is
assigned. Each temperature control channel number can be calculated from the following equation.
Temperature control channel number of communication
 [Module address setting ]  [Maximum channel number of the function module
a b
]
+ [Channel number in a module]
a
When the setting is A to F, it is a decimal number.
b For the Z-TIO module, it is calculated by "4."
Example: When three Z-TIO modules (4-channel type) are joined
0 1 2 Module address setting
 Z-TIO module 3:
The temperature control channel
number used for communication
of channel 2
2  4 + 2 = 10
Z-TIO module 1
Z-TIO module 2 Z-TIO module 3
CH3 CH1 CH7 CH5
CH11
CH4 CH2
CH8 CH6 CH12
3.3 Digital Input/Output Channel of Z-DIO Module
Setting the Z-DIO module address determines the digital input/output channel number of SRZ unit.
To each Z-DIO module address, the relevant digital input/output channel is assigned. Each digital
input/output channel can be calculated from the following equation.
Digital input (or output) channel number
 [Module address setting ]  [Maximum channel number of the function module
a b ]
+ [Input (or output) channel number in a module]
a When the setting is A to F, it is a decimal number.
b
For the Z-DIO module, it is calculated by "8."
Example: When two Z-DIO modules are joined
0 1 Module address setting
 Digital output channel number of digital output
(DO) channel 1 of Z-DIO module 2
1  8 + 1 = 9
Z-DIO module 1 Z-DIO module 2
DI4 (CH4) DO1 (CH1) DI4 (CH12)
DI3 (CH3) DO2 (CH2) DI3 (CH11)
DI2 (CH2) DO3 (CH3) DI2 (CH10)
DI1 (CH1) DO4 (CH4) DI1 (CH9)
DI8 (CH8) DO5 (CH5) DI8 (CH16)
DI7 (CH7) DO6 (CH6) DI7 (CH15)
DI6 (CH6) DO7 (CH7) DI6 (CH14)
DI5 (CH5) DO8 (CH8) DI5 (CH13)
3.4 CT Input Channel of Z-CT Module
Setting the Z-CT module address determines the current transformer (CT) input channel number of
SRZ unit. To each Z-CT module address, the relevant current transformer (CT) input channel is
assigned. Each current transformer (CT) input channel can be calculated from the following equation.
Current transformer (CT) input channel number
 [Module address setting ]  [Maximum channel number of the function module
a b
]
+ [Channel number in a module]
a When the setting is A to F, it is a decimal number.
b
For the Z-CT module, it is calculated by "12."
Example: When two Z-CT modules are joined
0 1 Module address setting
 Channel number of current transformer
(CT) input channel 1 of Z-CT module 2
1  12 + 1 = 13
Z-CT module 1 Z-CT module 2
CT9 (CH9) CT1 (CH1) CT9 (CH21)
CT8 (CH8) CT2 (CH2) CT8 (CH20)
CT7 (CH7) CT3 (CH3) CT7 (CH19)
CT12 (CH12) CT4 (CH4) CT12 (CH24)
CT11 (CH11) CT5 (CH5) CT11 (CH23)
CT10 (CH10) CT6 (CH6) CT10 (CH22)
4. IP ADDRESS SETTINGS
To use the COM-ML on Ethernet [MODBUS/TCP or PLC communication (MAPMAN)], IP address
setting is necessary.
The IP address can be set in host communication or loader communication.
4.1 Host Communication Settings
When setting via host communication, refer to the following RKC communication identifiers and
Modbus register addresses to set the IP address.
The set IP address is enabled by turning OFF the power and then turning it ON again.
Modbus
RKC
register address
Name
identifier
HEX DEC
First-byte of IP address QB 801B 32795
Second-byte of IP address QC 801C 32796
Third-byte of IP address QD 801D 32797
Fourth-byte of IP address QE 801E 32798
(Factory set value for COM-ML IP address: 192.168.1.1)
For the IP address, check with the administrator of the network (LAN) to which
the COM-ML is connected.
Our Communication tool "PROTEM 2" can be used for the communication setup.
CH9
This tool can be downloaded from the official RKC website:
http://www.rkcinst.com/
CH10
For information on connecting the COM-ML to a host computer, refer to COM-ML-1 [For
SRZ] Installation Manual (IMR02E13-E).
4.2 Loader Communication Settings
To perform Loader communication, our converter and a communication cable are required.
 USB communication converter COM-K2 (With USB cable)
To use the Loader communication, USB driver for COM-K2 must be installed on the
personal computer. The USB driver for COM-K2 can be downloaded from the official RKC
website: http://www.rkcinst.com/
 Loader communication cable W-BV-01 [Options for COM-K2]
 Communication tool PROTEM 2
This tool can be downloaded from the official RKC website: http://www.rkcinst.com/
 Connection method
Connect the COM-ML, the COM-K2, and the personal computer with a USB cable and a loader
communication cable.
USB communication
Connect to loader
communication connector converter
of the COM-ML COM-K2 (RKC product)
(COM-K2 accessory)
Connect to
loader
DO1 (CH9)
communication
Connect to
The termination
DO2 (CH10)
connector
resistor is built
USB connector
DO3 (CH11)
into the COM-K2
of the COM-K2
DO4 (CH12) Loader communication
cable (W-BV-01)
DO5 (CH13)
[Options for COM-K2]
DO6 (CH14)
DO7 (CH15)
DO8 (CH16)
During the loader communication, the COM-ML requires an external power source. The
COM-ML will not function on the USB power from a personal computer alone.
 Setting of loader communication
The device address, the communication speed and the data bit configuration are fixed as follows
for the loader communication.
 Device address:
0
 Communication speed: 38400 bps
 Data bit configuration:
Data 8-bit, Without parity, Stop 1-bit
 Setting of PROTEM 2
1. Turn on the power of the COM-ML (SRZ unit).
2. Start PPROTEM 2
If you use the PROTEM 2 for the first time, you have to create a new project and set a
communication port.
3. Click "Base Tool: Select model"
Click
CT1 (CH13)
CT2 (CH14)
CT3 (CH15)
CT4 (CH16)
CT5 (CH17)
CT6 (CH18)
Factory
Data range
set value
0 to 255 192
0 to 255 168
0 to 255 1
0 to 255 1
Personal
USB cable
computer
Connect to
USB port of a
personal computer
Continued on the next page