Chino LE5000 Series User manual

INST.No.INE-367B
Please make sure that this manual is handed to the final user of the instrument.
LE5000 SERIES
HYBRID RECORDER
COMMUNICATION
INTERFACE
Retain this manual apart from the
instrument and in an easily accessible.

Contents
Introduction...........................................................................................................1
1 Overview ..........................................................................................................2
1.1 RS-422A/485 communication interface....................................................................................... 2
1.2 Communication protocol ................................................................................................................. 2
2 Communication specifications .....................................................................2
3 Confirmation of communication specifications, and setting method ....3
4 Connection .......................................................................................................4
4.1 Precautions while doing the connections ................................................................................... 4
4.2 Cable for communication................................................................................................................ 5
4.3 RS-422A/485 connection................................................................................................................ 7
5 MODBUS protocol ...........................................................................................8
5.1 Message transmission mode......................................................................................................... 9
5.2 Data time interval ........................................................................................................................... 10
5.3 Message configuration.................................................................................................................. 10
5.4 Method of creating a message.................................................................................................... 16
5.5 Function code.................................................................................................................................. 17
5.6 Process during abnormality ......................................................................................................... 21
5.7 Print message function ................................................................................................................. 23
5.8 Reference table .............................................................................................................................. 24
6 Before connecting to the network ............................................................. 81
6.1 Allocation of IP address ................................................................................................................ 82
6.2 Communication error of Ethernet ............................................................................................... 83

－1－
Introduction
This instruction manual explains the handling and specifications about 4 communication interfaces
(RS-422A, RS-485, USB, Ethernet) in the common communication interface edition of Hybrid
recorder LE5000 series. Each individual part is divided into “RS-422A/485”, “USB”, “Ethernet” and
common part is collectively explained. Hence read the part that is required.
Confirm the communication interface of the purchased LE5000 series by model code.
LE5000 series
LE5-
Communication interface
N: None
1: Either of RS-422A/RS-485+USB+Ethernet
+Contact point 1 output (Contact point 1 output mechanical relay
‘a’ contact point output)
1. Other instruction manuals to be referred to
As this manual gives a limited explanation about the communication interface, refer to the instruction
manual of this instrument itself for the operation methods etc.
1) LE5200 operation type intelligent recorder (Instruction manual No. LE5-11-□)
2) Line converter SC8-10 (Instruction manual No. SC8-10-□)
For the PC to be used refer to the instruction manual of that PC.
2. Precaution table Precautions
In between the sentences in this instruction manual there are explanations. It is the description of
things that are to be observed during operation and at the time of handling the communication
interface. If these things are not followed the device may be damaged and the performance will drop
remarkably or operation may not run properly.
(1) The contents of this document may be changed without notice in the
future.
(2) All the possible care has been taken while creating this manual.
However if you come across any mistake, or have any doubts or if you
notice any description leakage etc. contact the shop from where you
purchased the product or contact our company's nearest branch office.
(3) Please note that irrespective of (2) we will not be responsible for the
effect of operation result.
Precautions

－2－
1Overview
In communication interface of LE5000 there are 4 types viz. RS-422A, RS-485, USB, Ethernet
available and are used for communicating with the personal computer (Hereafter referred to as PC).
PC can receive measurement data from LE5000, various parameters can be set and operation
commands can be executed.
Connection count of LE5000 is 1 USB and maximum 31 RS-422A/485.
1.1 RS-422A/485 communication interface
RS-422A/485 communication interface can communicate by connecting in series multiple (maximum
31) LE5000 series machines through the signal that conforms to RS-422A/485.
Although the number of PCs having RS-422A/485is less, it can be easily connected by using
RS-232C RS-422A/485 signal converter, as it is a serial communication.
As this company also has line converters for RS-232C RS-422A/485 signal conversion, you can
place an order for them.
The difference between RS-422A and RS-485 is that, the former uses 4 signal lines whereas the later
uses 2 signal lines only.
1.2 Communication protocol
LE5000 series uses MODBUS protocol (MODBUS is a registered trademark of SCHNEIDER Company)
as communication protocol
MODBUS protocol has 2 modes viz. RTU mode and ASCII mode and they can be toggled using key
settings. MODBUS protocol has operation function and, settings and send function of measurement
data.
2Communication specifications
・Asynchronous method
・Half duplex communication method (Polling selecting method)
・Protocol: MODBUS protocol/usual protocol (Compatible with LE1000)
・Transmission speed:19200, 9600, 4800, 2400, 1200 bps switching possible (differs depending on
the protocol)
・Start bit:1 bit
・Data length: 7 bits/8 bits switching is possible
・Parity bit: Even (even parity)/Odd (odd parity)/Non (No parity) switching is possible
・Stop bit: 1 bit/2 bits switching over is possible
・Transmission code: Binary/ASCII (Differs depending on the protocol)
・Error check: Differs depending on the protocol
・External instrument priority communication method
・Data transmission procedure: No procedure
・Usage signal name: Send and receive data only (Without using control signal)

－3－
3Confirmation of communication
specifications, and setting method
Go to the settings display mode by clicking the Menu key. A window opens and a list of setting items is
displayed, select COM. and click the Enter key. The following settings screen is displayed. Confirm the
specifications and do the settings as per the requirement.
・Instrument address: Setting range from 1-99 can be entered directly using the number keys.
・Transmission speed: Select either of 9600,19200bps.
・Character: Select from the code given in the table below.
Code Length of data Parity Stop bit
7E1
7 bits
Even 1
7E2 2
701 Odd 1
702 2
8N1
8 bits
None 1
8N2 2
8E1 Even 1
8E2 2
801 Odd 1
802 2
RTU mode is 8 bits only
・RTU/ASCII: Select either of RTU, ASCII, PRIVATE.
Confirm all the settings or finish all the setting changes then take the cursor to Set button and
end after clicking the Enter key.
Note) PRIVATE protocol is compatible with the communication protocol of old model LE1000. Select at
the time of using the high order application that was used in the old model, as it is.
MODBUS protocol does not exist. In the corresponding application CISAS or Torwin of our
company exist.
In case of using any other application, refer to the communication interface instruction manual of
old LE1000 model. However the corresponding message has limitations hence please take care.

－4－
4Connection
4.1 Precautions while doing the connections
4.1.1 Communication terminal
Terminal layout differs depending on the communication interface that is specified.
4.1.2 Total extension of RS-422A/485 communication cable is less than 1.2km
Wiring interval between each instrument can be anything but the total extension distance of the cable
is within 1.2 kms.
(Line converter LE5000 of the farthest terminal)
4.1.3 Take prevention measures to prevent noise mixing.
In order to avoid the effect of noise keep a distance of minimum 50cm or more between the power
line and other communication lines.
4.1.4 Always do crimp style terminal processing.
Due to one of the causes of communication defect
the connection is lost. Always process the
communication cable of the terminal using crimp
style terminal with insulated sleeve of Ｏtype or Y
type. (Terminal screws of LE5000 line converter are
M3.5mm)
4.1.5 Apply terminating resistance.
In case of using RS-422A/485 communication, apply a resistance of 100to LE5000 to be placed in
the last terminal. (For details refer to 4.3)
(General metal coating resistance will do. It is available in this company, place an order with us.)
4.1.6 Number of connection machines of LE5000
For RS-422A/485 ：Maximum 31
Total length of cable less than 1.2 km
Line converter LE5000
Ｏtype crimp style terminal
3.7 or more
Less than 8
3.7 or mor
e
Less than 8
Ｙtype crimp style terminal
Insulated sleeve
Insulated sleeve
（㎜）
 RS-422 communication terminal
ＲＤＡ
ＳＤＡ
ＳＤＢ
ＲＳ－４２２Ａ
ＲＤＢ
ＳＧ
Short circuit SDA and RDA
Short circuit SDA and RDB
 RS-485 communication terminal
ＳＢ
ＳＡ
ＲＳ－４８５
ＳＧ

－5－
4.2 Cable for communication
Before connecting be prepared with cable exclusively for communication. It is available in our company
also; hence you may place an order with us.
4.2.1 Communication cable for RS-422A
①Connection between line converter and LE5000
Cable Ｏtype crimp style terminal Ｏtype crimp style terminal RS-422A cable
(For line converter)
Form
It is a 2 core CVVS wire that is twisted and it is further twisted to 4 core cable and
SG (Signal Grand) wire is available on both sides. As there is no SG converter on
line converter side, use it after disconnecting.
Internal
connection
Format code
RZ-CRA2□□
Cable length 1-99m (specified)
②Connection between LE5000s
Cable Ｏtype crimp style terminal Ｏtype crimp style terminal RS-422A cable
(For series)
Form
It is a 2 core VCTF wire that is twisted and it is further twisted to 4 core cable and
SG (Signal Grand) wire is available on both sides.
Internal
connection
Format code
RZ-CRA1□□
Cablelength01-99m(specified)
Line converter side LE5000 side
ＲＤＡ
ＲＤＢ
ＳＤＡ
ＳＤＢ
ＳＤＢ
ＳＧ ＳＧ
ＲＤＡ
ＲＤＢ
ＳＤＡ
RD
B
RD
A
SD
A
SDB
SG
SDB
SDA
RDA
RDB
SG
(Black) SDA
LE5000 side LE5000 side
(Green) RDB
(White) SDB
RDA (Red) (Red) RDA
RDB (Green)
SDB (White)
SG (Blue) (Blue) SG
SDA (Black)
RD
B
RD
A
SD
A
SDB
SG
RDB
RDA
SDA
SDB
SG

－6－
4.2.2 Communication cable for RS-485
①Connection between line converter and LE5000
Cable Ｏtype crimp style terminal Ｏtype crimp style terminalRS-485 cable
(For line converter)
Form
It is a CVVS wire that is twisted to 2 core cable and SG (Signal Grand) wire is
available in both the terminals. As there is no SG converter on line converter
side, use it after disconnecting.
Internal
connection
Format code
RZ-LEC□□□ (For line converter)
Cable length 1-200m (specified)
②Connection between LE5000s
Cable Ｏtype crimp style terminal Ｏtype crimp style terminalRS-485 cable
(For series)
Form
It is a CVVS wire that is twisted to 2 core cable and SG (Signal Grand) wire is
available in both the terminals.
Internal
connection
Format code
RZ-LEC□□□ (For series)
Cable length 1-200m (specified)
SA
SG
SG
SA
SB SB
RD
A
RD
B
SG
SA
SB
SG
SA
SB
SG
LE5000 side
S
G
Line converter side
R
D
A
RD
B
LE5000 side
ＳＡ
ＳＢ
ＳＧ
LE5000 side
SA
SB
SG

－7－
4.3 RS-422A/485 connection
Connect RS-422A/485 communication interface to PC using line converter (Our company’s model:
SC8-10). As the line converter and PC use only 3 signals viz. send, receive and signal grand and no
other control signal is used, wiring process in the connector needs to be similar to that of RS-232C
connection. (For details refer to line converter instruction manual.)
1 23 4 5
6 78 9
ＳＤＡ ＳＤＢ ＲＤＡ ＲＤＢ ＳＧ
ＳＤＡ ＳＤＢ ＲＤＡ ＲＤＢ ＳＧ
ＳＤＡ ＳＤＢ ＲＤＡ ＲＤＢ ＳＧ
LE5000
LE5000
LE5000
Line converter
9 pin connecter for PC
(Wiring process is necessary.)
Terminal resistance 100Ω
RS-422A connection
Communication cable
RZ-CRA1□□
Communication cable
RZ-CRS6□□ Communication cable
RZ-CRA2□□
RD
SD
SG
RDA
RDB
SDA
SDB
1
2
3
4
5
6
7
8
Send
data
SDA
SDB
Receive
data
RDA
RDB
Internal circuit
Do not connect the SG
wire to the earthing
terminal or FG terminal
of the instrument.
 Caution
Send
data
SA
SB
Receive
data
Internal circuit
Communication cable
RZ-CRS6□□
9 pin connecter for PC
(Wiring process is necessary.)
LE5000
LE5000
LE5000
Line converter
Terminal resistance 100Ω
Communication cable
RZ-LEC□□□
RS-485 connection
Do not connect the SG
wire to the earthing
terminal or FG terminal
of the instrument.
 Caution
1 2 3 4 5
6 7 89
ＳDＡＳDＢRDB
ＳDＡＳDＢRDB
ＳDＡＳDＢRDB
Communication cable
RZ-LEC□□□
RD
SD
SG
RDA
RDB
SDA
SDB
1
2
3
4
5
6
7
8
RDA
RDA
RDA

－8－
5MODBUS protocol
Precautions and basic procedure of communication
 Caution
1. Error occurs if data is requested immediately after starting the power supply.
LE5000 can be communicated with, any time. Response is output anytime for the data request
from PC.
However at the time of starting the power supply, response is not output normally, until the data of
the channel is gathered. For example, time necessary to gather data of LE5000 36 point analyzer,
is around 20 seconds. If data is requested in that time Error No. 12 (Setting mode error) is
returned.
2. As the control signal wire is not used, consider resending the command.
Serial interface of LE5000 communicates without using control wire. Hence consider resending the
command as reception defect may occur depending on LE5000 status.
3. Do not remove any device or communication cable and do not ON-OFF the
power supply during communication.
If device or cable that makes up the serial interface is removed in between or if power is switched
ON or OFF, operation may stop and error may occur. If this happens reset all the devices that
make up the serial interface and do the process all over again.
4. Send the next command after confirming that the communication drive is
switched OFF.
In RS-422A/485, if multiple instruments are connected in same communication line, then only 1
machine in which instrument numbers are specified from the PC, drives the communication line. At
that time in order to receive all the characters in the PC for sure, let some time lapse after the last
character is sent and then switch OFF the drive of communication line. If PC sends a command for
the next device before it becomes OFF, then the signal crashes and normal communication is not
done hence take care in case of high speed PCs. This interval is around 5ms.