CHINO AL4000, AH4000 Operating Manual

INST.NO. INE-846B

AL4000/AH4000

Hybrid Memory Recorder

KL4000/KH4000

Hybrid Recorder

[ Communication Interface ]

	Table of contents
1. Introduction....................................................................................................................		1
2. For Safe Use...................................................................................................................		2
2-1.	Preconditions for Use .........................................................................................................................................	2
2-2.	Symbol Mark.......................................................................................................................................................	2
3. Overview.........................................................................................................................		3
3-1.	RS232C Communication Interface .....................................................................................................................	3
3-2.	RS422A/485 Communication Interface ..............................................................................................................	3
3-3.	Ethernet..............................................................................................................................................................	3
4. Communications Protocol ............................................................................................		4
4-1.	MODBUS Protocol..............................................................................................................................................	4
4-2.	PRIVATE Protocol...............................................................................................................................................	4
5. Communication Specifications.....................................................................................		5
5-1.	MODBUS............................................................................................................................................................	5
5-2.	PRIVATE.............................................................................................................................................................	5
5-3.	Ethernet..............................................................................................................................................................	5
6. Communication Parameter Settings ............................................................................		8
6-1.	Ethernet Settings (AL4000/AH4000 Only) ..........................................................................................................	8
6-2.	COM Settings (For AL4000/AH4000) .................................................................................................................	9
6-3.	COM Settings (For KL4000/KH4000) ...............................................................................................................	10
7. Wiring............................................................................................................................		16
7-1.	Precautions on Wiring ......................................................................................................................................	16
7-2.	Communication Cable ......................................................................................................................................	17
7-3.	Communication Line Wiring..............................................................................................................................	19
8. MODBUS Protocol .......................................................................................................		22
8-1.	Message Transmission Mode ...........................................................................................................................	23
8-2.	Data Time Interval ............................................................................................................................................	24
8-3.	Message Structure............................................................................................................................................	24
8-4.	Message Creation ............................................................................................................................................	30
8-5.	Function Code ..................................................................................................................................................	31
8-6.	Response to Abnormal Situation ......................................................................................................................	39
8-7.	Title Printing (Message Printing 2) Function .....................................................................................................	41
8-8.	Data Communications Input .............................................................................................................................	41
8-9.	Reference Table ...............................................................................................................................................	42
8-10.	Range No. Reference Table ...........................................................................................................................	104
9. PRIVATE Protocol (For AL4000/AH4000).................................................................		105
9-1.	Basic Communication Sequence....................................................................................................................	106
9-2.	Control Character Code..................................................................................................................................	106
9-3.	Data Link ........................................................................................................................................................	106
9-4.	Data Transmission and Reception..................................................................................................................	108
9-5.	Checksum........................................................................................................................................................	111
10. PRIVATE Protocol (For KL4000/KH4000)...............................................................		112
10-1.	Basic Communication Sequence....................................................................................................................	113
10-2.	Basic Communication Format.........................................................................................................................	113
10-3.	Control Character Code..................................................................................................................................	114
10-4.	Communication Address.................................................................................................................................	114
10-5.	Checksum (bc bc)...........................................................................................................................................	115
10-6.	List of Sub Commands ...................................................................................................................................	115
10-7.	List of Error Codes..........................................................................................................................................	116
10-8.	Communication Format Details ......................................................................................................................	117
11. Web Settings/Display (AL4000/AH4000 Only)........................................................		129

11-1.	Top Page ........................................................................................................................................................	129
11-2.	Display............................................................................................................................................................	130
11-3. Parameters Set by Each CH...........................................................................................................................		131
11-4.	Calculation......................................................................................................................................................	135
11-5.	Dotting/Printing ...............................................................................................................................................	137
11-6.	Remote Contacts (Option) ..............................................................................................................................	143
11-7.	Communication...............................................................................................................................................	145
11-8.	SD Card..........................................................................................................................................................	149
11-9.	System ...........................................................................................................................................................	150

1. Introduction

Thank you for purchasing KL4000/KH4000 or AL4000/AH4000 series.

Make sure to read this instruction manual in advance to understand this unit well and prevent troubles from occurring.

This manual is a “Communications” instruction manual. For specifications with communications, read the “General” instruction manual separately.

Requestt

- To the persons doing instrumentation, installation, and sales -

Make sure to provide this instruction manual to the person who uses the unit.

- To the users of this unit -

Store this instruction manual with care until you scrap the unit.

Also, write down the parameter contents set in the product and keep it for your record.

Product warranty scope

This product is warranted for one year from the date of delivery. If it is damaged during the warranty period, when used normally based on the cautions in the instruction manual labels attached to the product, etc., it will be repaired without any charge (only in Japan). In the case, we are sorry to trouble you, but please contact your dealer or nearest our sales office.

However, in cases of the followings, it will be repaired at your expense even during warranty period.

1.Failure or damage caused by improper use or connection, or invalid repair or modification.

2.Failure or damage caused by fire, earthquake, wind or flood, thunderbolt, or other extraordinary natural phenomena, or pollution, salt, harmful gas, abnormal voltage, or use of unspecified power.

3.Replacement of parts or accessories that have reached the end of their life.

Furthermore, the term „warranty‟ in this sense covers only a CHINO‟s product itself. Therefore, we are not responsible for compensation for whatever the damage that is triggered by failure of our product.

Notice

1.No part of this manual can be reproduced or copied in any form without permission.

2.The contents of this manual may be altered without prior notice.

3.This manual has been documented by making assurance doubly sure. However, if any question arises or if any error, an omission, or other deficiencies are found, please contact your nearest our sales office.

4.CHINO is not responsible for any operation results of this software.

Trademark

1.Microsoft, Windows, Windows XP, Windows Vista, Windows 7, and NET Framework are trademarks of Microsoft Corporation and the related company.

2.SD Memory Card is the trademark of Panasonic Corporation, SanDisk Corporation in USA, and TOSHIBA CORPORATION.

3.Other described company names and product names are trademarks and registered products of the respective companies.

4.Please note that the marks “TM” and “®” are omitted throughout this manual.

Warning

Perchlorate Material

This instrument uses battery with Perchlorate Material.

Special handling may apply, see

http://www. dtsc.ca.gov/hazardouswaste/perchiorate

- 1 -

2. For Safe Use

For safe use of the unit, please read and understand the following cautions.

2-1. Preconditions for Use

The unit is a component type general product to be used mounted on an indoor instrumentation panel. Avoid using under other conditions.

Use after the system safety is implemented such as the fail-safe design and periodical inspection on the final product side. Also, for wiring/adjustment/operation of the unit, ask professionals with instrumentation knowledge to perform.

In communications interfaces, communication errors in some probabilities are unavoidable due to the timing and noise between instruments.

For your machines and devices, please perform retry processing, fail safe design, safety design and so on. Furthermore, also the person who actually uses the unit is required to read this instruction manual to fully understand various cautions and basic operation.

2-2. Symbol Mark

This instruction manual includes the following symbol marks. Make sure to fully understand their meaning.

	Symbol mark		Meaning
	! Caution		Cautions are explained to avoid causes for slight injuries of users or damages of the unit
			or peripheral devices.

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3. Overview

The unit is equipped with the communication interfaces such as RS232C, RS422A, RS485 and Ethernet to communicate with a personal computer (PC). Receiving measured data, setting various parameters and sending operation commands can be performed on a PC.

The number of connectable units is one for RS232C, and 31 at maximum for RS422A/485.

3-1. RS232C Communication Interface

RS232C is a data communications standard developed and published by Electronic Industries Association (EIA), which is equivalent to JIS C 6361 of Japanese standard.

Originally, RS232C is an interface between a modem and connected data terminal equipment, and the standard specifies electrical and mechanical specifications only.

Currently, there are few RS232C communication interfaces used for PCs or industrial instruments like this unit which meet the above standard completely. There are cases where the number of signal cables or the connector differs from the standard.

Also, the standard does not specify software, or “data transmission procedure”, so it means that connection between devices with RS232C communication interface is not always possible. For this reason, users need to research or check the specifications and transmission procedures of devices to be connected beforehand. However, a device like PC which allows arbitrary programming of specifications can be combined with any device by creating an appropriate program.

To research the RS232C standards, referring to JIS C 6361 may be the easiest way.

3-2. RS422A/485 Communication Interface

With RS422A/485 communication interface, multiple units (up to 31) of this series can be connected in parallel to establish communication using signals conforming to RS422A/485.

There are not many PCs having RS422A/485 communication interface, however, serial communication enables easy connection setup using a signal converter between RS232CRS422A/485.

A line converter for RS232CRS422A/485 signal conversion (model: SC8-10) is available from us. Contact us when you need it.

The difference between RS422A and RS485 is that RS422A uses four signal cables whereas RS485 uses only two signal cables.

3-3. Ethernet

Ethernet is a communication interface standardized as IEEE802, 3 in 1983. It is widely used as the most common communication medium in small-scale LAN. The AL4000/AH4000 series is connected to LAN constructed by Ethernet to receive measured data or set various parameters.

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4. Communications Protocol

The unit has the following two communications protocols which can be switched using the front keys.

4-1. MODBUS Protocol

MODBUS is a registered trademark of Schneider Electric.

MODBUS protocol has RTU mode and ASCII mode which can be selected using the front keys or via communication. This protocol provides measured data transmission, setting and operating functions.

For Ethernet interface, MODBUS protocol is implemented on TCP protocol packet to establish communication (see section 5-3).

4-2. PRIVATE Protocol

PRIVATE is a conventionally used protocol by CHINO.

This protocol can be selected using the front keys. It provides measured data transmission, setting and operating functions.

Two types of modes are available: PRIVATE1 and PRIVATE2, and these can be selected using the front keys.

	KL4000/KH4000	AL4000/AH4000
PRIVATE1	No communication address	No connection sequence
PRIVATE2	Communication address	Connection sequence
	available	available

PRIVATE1: With RS232C, data link is not necessary due to one-to-one communication with the host. Select PRIVATE1 for RS232C.

PRIVATE2: With RS422A and RS485, data link is required.

Select PRIVATE2 for these interfaces. Also, select PRIVATE2 for RS232C when the software of the host is shared since data link commands can be received.

The compatibility with our older models can be maintained. However, the parameters which cannot be handled by PRIVATE are now settable by MODBUS. We recommend MODBUS protocol to customers who construct a new communication environment.

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5. Communication Specifications

5-1. MODBUS
Communication system	:	Half-duplex start-stop synchronization
Protocol	:	MODBUS protocol
Transmission speed	:	9600, 19200, 38400bps selectable
Start bit	:	1 bit
Data length	: 7 bits (ASCII mode)
		8 bits (RTU/ASCII mode)
Parity bit	:	Non (None) /Even/Odd
Stop bit	:	1 bit/2 bits
Transmission code	:	ASCII (ASCII mode)
		Binary (RTU mode)
Error check	:	LRC (ASCII mode)
(Error detection)		CRC-16 (RTU mode)
Data transmission procedure	:	None
Used signals	: Transmitted/received data only (no control signal used)

5-2. PRIVATE

Communication system	: Half-duplex start-stop synchronization (polling selecting
		system)
Protocol	:	PRIVATE protocol
Transmission speed	:	1200, 2400, 4800, 9600bps selectable
Start bit	:	1 bit
Data length	:	7 bits/8 bits
Parity bit	:	Non (None) /Even/Odd
Stop bit	:	1 bit/2 bits
Transmission code	:	ASCII
Error check	:	BCC (block check character) checksum
(Error detection)
Data transmission procedure	:	None
Used signals	: Transmitted/received data only (no control signal used)

5-3. Ethernet

Ethernet communication is supported by AL4000/AH4000 only.

Medium	:	Ethernet (10BASE-T/100BASE-TX)
Communication mode	: Full-Duplex/Half-Duplex
Transmission speed	:	10Mbps (10BASE-T)/100Mbps (100BASE-TX)
		Note that transmission speed and communication mode are
		automatically recognized and cannot be set to fixed value.
Protocol	:	MODBUS (RTU) protocol on TCP/IP
Simultaneous connection	:	1 (in host communication using MODBUS protocol)

The AL4000/AH4000 series provides a Web setting function on Ethernet (see section 11). The following table shows association with TCP/IP layers in MODBUS communication.

TCP/IP model layers	Main protocol used in Ethernet communication
Application layer	MODBUS
Transport layer	TCP
Internet layer	IP, ARP
Physical/data link layer	Hardware (Ethernet)

For details of MODBUS protocol, see “8. MODBUS Protocol”.

- 5 -

1. Establishing TCP connection

To establish communication between a PC (makes data request: client) and the unit (receives data request: server), establish TCP connection first according to the following procedure.

(1)PC sends a TCP packet with SYN flag set to the unit.

(2)When the unit receives the SYN packet, it sends a TCP packet with SYN + ACK flag set to the PC.

(3)When the PC receives the SYN + ACK packet, it sends a TCP packet with ACK flag set to the unit.

PC		Unit
Client		Server

U A P R S F R C S S Y I G K H T N N

0 0 0 0 1 0

U A P R S F R C S S Y I G K H T N N

0 1 0 0 0 0

(1) SYN

U A P R S F

(2) SYN + ACK R C S S Y I G K H T N N

0 1 0 0 1 0

(3) ACK

2. Transmitting/receiving data by TCP

Once the connection has been established, various data are transmitted/received between PC (client) and the unit (server) via MODBUS (RTU) protocol on TCP data.

				TCP packet
TCP header section				TCP data section
			MODBUS (RTU) protocol
		PC			Unit

Request

Response

Request

Response

- 6 -

3. Disconnecting TCP connection

TCP connection is disconnected with the following flow of communications.

(1)PC sends a TCP packet with FIN flag set to the unit (disconnection notice).

(2)When the unit receives the FIN packet, it sends a TCP packet with ACK flag set to the PC.

(3)The unit sends a FIN + ACK packet to the PC (disconnection notice).

(4)The PC sends an ACK packet responding to FIN to the unit.

PC		Unit
Client		Server

U A P R S F R C S S Y I G K H T N N

0 0 0 0 0 1

U A P R S F R C S S Y I G K H T N N

0 1 0 0 0 0

(1)FIN

(2)ACK

(3)FIN + ACK

(4)ACK

U A P R S F R C S S Y I G K H T N N

0 1 0 0 0 0

U A P R S F R C S S Y I G K H T N N

0 1 0 0 0 1

4. Actions against communication error

When the following communication errors occur on TCP/IP, the unit takes actions described below.

●No response from the device at the other end (PC, etc.)

When the unit sends data to a communication target on Ethernet but no response (ACK) packet is returned, the unit repeats transmission retry operation (for around three minutes maximum).

The unit disconnects TCP connection if no response is made to the transmission retry packet.

If a communication target makes a TCP connection request before the unit disconnects TCP connection, the unit sends an RST packet to reject the request.

The unit sends an RST packet in the following situations.

When a TCP packet is received from devices other than that being connected.

When an RST packet is received from a communication target.

●Unexpected reply packet received

Generally, unexpected reply packets are ignored. However, TCP connection is disconnected immediately after the unit receives an RST packet in situations such as when PC performs a forced disconnection of TCP connection.

- 7 -

6. Communication Parameter Settings

6-1. Ethernet Settings (AL4000/AH4000 Only)

(IP Address etc… Settings)

Set each parameter.

(1) Pressing the key displays the menu window (list of setting items).

(2) Select “Ether”.

(3)	Move the cursor to the parameter to be set
	with the ▲/▼// keys.
(4)	Press the	key to make it available
	for setting and then select or enter a value.
(5)	After completing the settings of this item,
	move the cursor to		Set	.
(6)	Press the	key to register the
	settings (when chart recording is ON, a
	setting change mark is printed). To cancel
	the settings, press the				key.

Note: Actual windows are separated. Use the ▲/▼ keys to scroll and continue settings. [List of Ether setting parameters]

Parameter	Function	Default	Set value
MAC Address	Ethernet MAC address of the unit	Unique value	Setting disabled
IP Address	Set IP address	192.168.254.254	**:**:**:** (each ** area is set to 0 to 255)
Subnet Mask	Set subnet mask	255.255.255.0	**:**:**:** (each ** area is set to 0 to 255)
Default Gateway	Set default gateway address of the	0.0.0.0	**:**:**:** (each ** area is set to 0 to 255)
	network used
DNS ON/OFF	Select whether to use DNS (domain	OFF	OFF (not used), ON (used)
	name server)		Set server like SNTP and SMTP by the name when
			using DNS, or by the IP address when not using
			DNS.
[DNS Servers]	Set primary DNS server	0.0.0.0	**:**:**:** (each ** area is set to 0 to 255)
Primary Server
Secondary Server	Set secondary DNS server	0.0.0.0	**:**:**:** (each ** area is set to 0 to 255)
Port No.	Set port No. for socket communication	11111	0 to 65535
	by TCP/IP
Password	Set a password consisting of up to 32	3571
	characters used for setting on the Web

Reference Example settings for small network

To use the unit in a small network using a router without connecting to internal LAN or internet, set the IP address as shown below.

Unit	IP address	Subnet mask
AH4000 A	192.168.254.254	255.255.255.0
AH4000 B	192.168.254.253	255.255.255.0
...	...	...
PC A	192.168.254.1	255.255.255.0
PC B	192.168.254.2	255.255.255.0
...	...	...

- 8 -

6-2. COM Settings (For AL4000/AH4000)

Set each parameter.

Note: Actual windows are separated. Use the ▲/▼ keys to scroll and continue settings.

[List of COM1 and COM2 setting parameters]

(1)Pressing the key displays the menu window (list of setting items).

(2)Select “COM1” or “COM2”.

(3)Move the cursor to the parameter to be set with the ▲/▼/ /  keys.

(4)Press the key to make it available for setting and then select or enter a value.

(5)After completing the settings of this item,

move the cursor to Set .

(6)Press the key to register the

settings (when chart recording is ON, a setting change mark is printed). To cancel the settings, press the key.

Parameter	Function	Default	Set value
Mode	Communication mode	Low(To PC etc…)	Fixed to Low (To PC etc…)
Protocol	Select communication	MODBUS RTU	MODBUS RTU, MODBUS ASCII, PRIVATE1 (without
	protocol		connection sequence), PRIVATE2 (with connection
			sequence)
Address	Set communication	01	01 to 99
	address of the unit
Baudrate	Set communication speed	9600	PRIVATE: 1200, 2400, 4800, 9600bps
			MODBUS: 9600, 19200, 38400bps
			Changes to “9600” when changing from PRIVATE to
			MODBUS or vice versa.
Character	Set transmission character	8N1	7E1, 7E2, 7O1, 7O2, 8N1, 8N2, 8E1, 8E2, 8O1, 8O2
Check SUM	Select whether to add	*	OFF, ON
	checksum code		Settable only when Protocol is set to “PRIVATE”.

Reference Character selection

Codes are used to represent characters. MODBUS RTU mode can set only 8-bit characters (see section 8-1).

Code	Character length		Parity	Stop bit
7E1	7-bit		Even	1
7E2	7-bit		Even	2
7O1	7-bit		Odd	1
7O2	7-bit		Odd	2
8N1	8-bit		Non	1

Code	Character length	Parity	Stop bit
8N2	8-bit	Non	2
8E1	8-bit	Even	1
8E2	8-bit	Even	2
8O1	8-bit	Odd	1
8O2	8-bit	Odd	2

*When connecting via Ethernet, communication protocol and communication address are fixed to “MODBUS RTU” and “01” respectively.

*Use the unit and PC at the same communication speed (use the default speed 9600bps in normal case).

*For RS422A/485, a communication address of the unit needs to be set. Make sure that one or more units connected to a PC have unique communication address and no overlap occurs.

For RS232C, only one unit is connected, but communication address needs to be set (use the default address 01 in normal case).

-9 -

6-3. COM Settings (For KL4000/KH4000)

Communication settings are performed with [ENG2 mode] which can be entered from a [ENG1 mode] item.

The [ENG2 mode] provides items for checking remote contact specifications and setting communication parameters.

Set communication parameters according to the flow chart.

1. Checking/setting items of communication specifications

	2 sec or more
	or no key operation for 1
[Display mode]	min or more
+	2 sec or more

Note Substitution key

Switching between [Display mode] and [ENG1 mode] can be done by the key instead of the

key.

Option
		Start setting
	Communication	Go to 2. Communications
	specifications
		protocol
		Go to 3. Transmission
		speed
Enter [ENG2 mode]		Go to 4. Communication
		address
		Go to 5. Communication
		character

- 10 -

2.	Setting communications protocol
1)	Setting range
	(MODBUS RTU mode)	(MODBUS ASCII mode)
	(PRIVATE1: No communication address)	(PRIVATE2: Communication address available)

2)Setting flow chart

<Example> Mode is changed from MODBUS RTU to MODBUS ASCII.

*Communications protocol is selected by the key in this example, but you can also use the key to reverse.

Communication specification items

	Reference	Decimal
Start setting		point
	ON:
	Flash:
(4)	(5)

Decimal points of all digits flash

(6)

Save in the memory Register and print setting

change mark

3)Setting procedure

(1)Enter [ENG1 mode]

Press and hold the and keys for two seconds or more to change from [Display mode] to [ENG1 mode].

(2)Enter [ENG2 mode]

Pressing the key changes ENG1 item. Select . Press the key to enter [ENG2 mode].

(3)Select communication specification

Pressing the key changes ENG2 item. Select and press the key.

(4)Start communications protocol setting

Pressing the / key displays the cursor (flashing decimal point). Select .

(5)Check selection

Pressing the key flashes decimal points of all digits. If an error is found, press the / key to reset.

(6)Register setting

When set correctly, press the key. The setting is saved in the memory and setting change mark is printed.

(7)End

The setting window of transmission speed will be displayed. Also, the mode returns to [Display mode]

when the key is pressed and held for two seconds or more on any setting display window, or keys are not operated for one minute or more.

-11 -

3.Setting transmission speed

1)Setting range

MODBUS: 9600, 19200, 38400bps PRIVATE: 1200, 2400, 4800, 9600bps

2)Setting flow chart

<Example> Transmission speed of MODBUS protocol is changed from 9600 to 19200bps.

*Transmission speed is selected by the key in this example, but you can also use the key to reverse.

Communication specification items

Start setting

(4)

(5)

(6)

Decimal points of all digits flash

(7)

Save in the memory Register and print setting

change mark

3)Setting procedure

(1)Enter [ENG1 mode]

Press and hold the and keys for two seconds or more to change from [Display mode] to [ENG1 mode].

(2)Enter [ENG2 mode]

Pressing the key changes ENG1 item. Select . Press the key to enter [ENG2 mode].

(3)Select communication specification

Pressing the key changes ENG2 item. Select and press the key.

(4)Select transmission speed

Pressing the key changes communication specification item. Select (previous set value is displayed).

(5)Start setting

Pressing the / key displays the cursor (flashing decimal point). Select .

(6)Check selection

Pressing the key flashes decimal points of all digits. If an error is found, press the / key to reset.

(7)Register setting

When set correctly, press the key. The setting is saved in the memory and setting change mark is printed.

(8)End

The setting window of communication address will be displayed. Also, the mode returns to [Display mode]

when the key is pressed and held for two seconds or more on any setting display window, or keys are not operated for one minute or more.

-12 -

4.Setting communication address

1)Setting range: 01 to 99

*For RS422A/485, a communication address of the unit needs to be set. Make sure that one or more units connected to a PC have unique communication address and no overlap occurs. For RS232C, only one unit is connected, but communication address needs to be set (use the default address 01 in normal case).

2) Setting flow chart <Example> Communication address is changed from 01 to 58.

Communication specification items

Cursor appears on the tens place

Press /

	(5)
(4)					Press	/
Start setting	(6)
					Decimal points of all
					digits flash
				(7)
					Save in the memory
	Register				and print setting
					change mark

3)Setting procedure

(1)Enter [ENG1 mode]

Press and hold the and keys for two seconds or more to change from [Display mode] to [ENG1 mode].

(2)Enter [ENG2 mode]

Pressing the key changes ENG1 item. Select . Press the key to enter [ENG2 mode].

(3)Select communication specification

Pressing the key changes ENG2 item. Select and press the key.

(4)Select communication address

Pressing the key changes communication specification item. Select (previous set value is displayed).

(5)Start setting

Pressing the / key displays the cursor (flashing decimal point) on the tens place. Pressing the / key increases/decreases numeric value. Press the key to move the cursor right, and set the ones place likewise.

(6)Check set value

Pressing the key flashes decimal points of all digits. If an error is found, press the / key to reset.

(7)Register setting

When set correctly, press the key. The setting is saved in the memory and setting change mark is printed.

(8)End

The setting window of communication character will be displayed. Also, the mode returns to [Display mode]

when the key is pressed and held for two seconds or more on any setting display window, or keys are not operated for one minute or more.

-13 -

5.Setting communication character

1)Setting range

Display

Character length

Parity

Stop bit

Reference

Display and meaning

7E1

7-bit

Even

1

7E2

7-bit

Even

2

7O1

7-bit

Odd

1

7O2

7-bit

Odd

2

Stop bit

8N1

8-bit

Non

1

(1: 1 bit, 2: 2 bits)

8N2

8-bit

Non

2

Parity

8E1

8-bit

Even

1

(E: EVEN, O: ODD, N: NON)

8E2

8-bit

Even

2

Character length

8O1

8-bit

Odd

1

(7: 7-bit, 8: 8-bit)

8O2

8-bit

Odd

2

*MODBUS RTU mode can set only 8-bit characters (see section 8-1).

2)Setting flow chart

<Example> Communication character is changed from 7E1 to 7O1.

*Communication character is selected by the key in this example, but you can also use the key to reverse.

Communication specification items

Start setting

(5)	(6)
(4)

Decimal points of all digits flash

(7)

Save in the memory Register and print setting

change mark

- 14 -

3)Setting procedure

(1)Enter [ENG1 mode]

Press and hold the and keys for two seconds or more to change from [Display mode] to [ENG1 mode].

(2)Enter [ENG2 mode]

Pressing the key changes ENG1 item. Select . Press the key to enter [ENG2 mode].

(3)Select communication specification

Pressing the key changes ENG2 item. Select and press the key.

(4)Select communication character

Pressing the key changes communication specification item. Select (previous set value is displayed).

(5)Start setting

Pressing the / key displays the cursor (flashing decimal point). Select .

(6)Check selection

Pressing the key flashes decimal points of all digits. If an error is found, press the / key to reset.

(7)Register setting

When set correctly, press the key. The setting is saved in the memory and setting change mark is printed.

(8)End

The selection window of communication specification will be displayed. Also, the mode returns to [Display

mode] when the key is pressed and held for two seconds or more on any setting display window, or keys are not operated for one minute or more.

- 15 -

7. Wiring

7-1. Precautions on Wiring

1. Communication terminal

Terminal layout depends on the selection of communication interface.

		1	2	3	4	5	6	7	8
	RS232C				SG	SD		RD
COM1	RS422A				SG	SDA	SDB	RDA	RDB
	RS485				SG	SA	SB	Short	Short
								with SA	with SB
COM2	RS485	SA	SB	SG

*RS232C and RS422A/485 of COM1 are specified on purchase.

*COM2 is supported by AL4000/AH4000 only.

2.RS422A/485 communication cable extended up to 1.2km

The interval between instruments can be decided freely, however, note that the total cable length should be 1.2km or less.

Line converter		Unit

Total cable length: 1.2km or less

3. Take measure against noise

To avoid interference from noise, keep the communication cable separated from the power or other communication cables, with a gap of at least 50cm between them.

4. Make sure to use crimping terminals

One of the causes of communication failure is a disconnection of cables. Make sure to install an O type or Y type crimping terminal with insulation sleeve to the end of communication cable.

Terminal board

Diameter

Tightening

Termination treatment (unit: mm)

torque

O type

t: 0.8

Y type

t: 0.8

Communications

5.2 or less

5.2 or less

M3

0.5 N∙m

3.2 or more

3.2 or more

terminal

With an insulation sleeve

With an insulation sleeve

* O type is preferred.

- 16 -

5. Add termination resistor

For RS422A/485 communications, install a 100Ω resistor to the unit which is located at the last edge of the communication line.

(See section 7-3.2 and 7-3.3.)

6. Number of connectable units

RS232C: One unit

RS422A/485: Up to 31 units

The number of connectable units specified above is based on the use of communication

! Caution IC conforming to the communication standards. However, the number of units or distance ensuring high quality communication varies depending on the type of

communication cable and other connected devices.

7-2. Communication Cable

Prepare a communication cable before wiring. Dedicated cables are available from us. Contact us when you need it.

1. RS232C

Connection between PC and the unit or a line converter

		Cable			9-pin connector	Crimp type ring terminals RS232C cable
							RD
							SD
					Cable for RS232C (Max. 15m)		SG
		Shape			PC side
					9-pin connector

	1
	6	RD
Internal	2
	7	SD
	3
wiring	8
	4	SG
	9
	5
Model	RZ - CR S6 □□
code

Cable length: 01 to 15m (specified)

- 17 -

2.			RS422A
		Connection between a line converter and the unit
			Cable		Crimp type ring terminals	Crimp type ring terminals RS422A cable
						(for a line converter)
			Shape
					RDA (black)	(black)	SDA
					RDB (white)	(white)	SDB
					SDA (red)	(red)	RDA
					SDB (green)	(green) RDB
					SG (blue)	(blue)	SG
					Line converter side	Recorder side

4-core cable of twisted 2-core cables of twisted VCTF lines. Each side has a SG (single ground) line. Since the line converter has no SG terminal, cut and use the cable.

	RDA	SDA
Internal	RDB	SDB
	SDA	RDA
wiring
	SDB	RDB
	SG	SG
Model	RZ - CR A2 □□
code
	Cable length: 01 to 99m (specified)
Connection between the unit and other devices
Cable	Crimp type ring terminals	Crimp type ring terminals RS422A cable
		(for parallel)
Shape
SDA (black)		(black)	SDA
SDB (white)		(white)	SDB
RDA (red)		(red)	RDA
RDB (green)		(green) RDB
SG	(blue)	(blue)	SG
	Device side	Recorder side
4-core cable of twisted 2-core cables of twisted VCTF lines. Each side has a SG
(single ground) line.
	SDA	SDA
Internal	SDB	SDB
	RDA	RDA
wiring
	RDB	RDB
	SG	SG
Model	RZ - CR A1 □□
code

Cable length: 01 to 99m (specified)

- 18 -

3.

RS485

Connection between the unit and other devices and between a line converter and the unit

Cable

Crimp type ring terminals

Crimp type ring terminals RS485 cable

RDA (black)

(black) SA

RDB (white)

(white) SB

SG (green)

(green) SG

Shape

Device/line converter side

Recorder side

2-core cable of twisted CVVS lines. Each side has a SG (single ground) line. Since

the line converter has no SG terminal, cut and use the cable.

Internal

RDA

SA

RDB

SB

wiring

SG

SG

Model

RZ - LEC □□□

code

Cable length: 001 to 200m (specified)

4.Ethernet (AL4000/AH4000 only)

●Connection between PC and device

When connecting a device to a PC directly (one-to-one), use a shielded, crossover twisted pair cable (commercially available STP cable).

●Connection between HUB and device (multiple devices can be connected)

When connecting devices to a PC via HUB (one-to-N), use a shielded, straight twisted pair cable (commercially available STP cable).

7-3. Communication Line Wiring

1. RS232C wiring

PC and device are connected one-to-one in RS232C communication.

Example of terminal connection

Communications port	RZ-CRS6
	RD
	SD
	SG
PC side	Cable for RS232C (Max.15m)

RD

SD

SG

Device side

- 19 -

2. RS422A wiring

PC and multiple devices are connected in RS422A communication. A line converter is required. RS422A cable is within 1.2km of total extension and up to 31 devices can be connected. Install a resistor of 100Ω to the last edge of the transmission line device side.

(General metal film resistors will be fine. They are available from us, so contact us when you need it.)

Example of terminal connection

RZ-CRS6	Communications port
RD
SD
SG
Cable for RS232C (Max. 15m)	PC side

Line converter

SC8-10

1RD

2SD

3SG

45 RDA 6 RDB

7 SDA

8 SDB

Turn the switch of RS422A/RS485 to RS422A.

Device side

	RDA	RDA	RDA
	RDB	RDB	RDB
	SDA	SDA	SDA
	SDB	SDB
			SDB
	SG	SG
			SG

Avoid connecting SG line to FG terminal or ground terminal of the device.

Termination

resistor

100Ω

100Ω

3. RS485 wiring

PC and multiple devices are connected in RS485 communication. A line converter is required. RS485 cable is within 1.2km of total extension and up to 31 devices can be connected.

Install a resistor of 100Ω to the last edge of the transmission line device side.

(General metal film resistors will be fine. They are available from us, so contact us when you need it.)

Example of terminal connection

RZ-CRS6

RD

SD

SG

Cable for RS232C (Max. 15m)

Line converter

SC8-10

1RD

2SD

3SG

54	RDA	SA
6	RDB	SB
7		SG
8

Communications port

PC side

Device side

SA	SA
SB	SB
SG	SG

Turn the switch of RS422A/RS485	Avoid connecting SG line to FG terminal or
to RS485.	ground terminal of the device.

Termination

resistor

100ΩΩ

- 20 -

4.Ethernet wiring (AL4000/AH4000 only)

●Example of connection between PC and Ethernet device (one-to-one connection)

							Shielded, crossover twisted pair cable
	PC side
							(Max. 100m)
							Device side

● Example of connection between PC, HUB and Ethernet device (one-to-N connection)

Shielded, straight twisted pair cable
(Max. 100m)	PC side

Shielded, straight twisted pair cable (Max. 100m)

		Shielded, straight twisted pair cable
HUB		(Max. 100m)

Device side

- 21 -

8. MODBUS Protocol

!	Caution	Make sure to read and understand this section to avoid any troubles.

1. Requesting data immediately after power-on generates an error

The unit is always ready for communications and responsive to data request from PC. However, after power-on, the unit does not respond normally until channel data becomes ready.

For example, it takes about 20 seconds for a 24-point AH4000 recorder to have the data ready. When a data request is received during this period, the unit returns an error.

2. Keys restricted in parameter setting (writing)

When operating the unit from PC to set parameters, etc., the / key becomes temporarily unavailable while a setting window is displayed. The key will be available again by changing the window displayed.

3. RS232C requires communication address

Although PC and the unit are connected one-to-one in RS232C communication, a communication address needs to be set to establish communication.

4. Be careful about command re-transmission as no control signal line is used

The serial interface of the unit makes communication without using a control line. Therefore, attention should be paid when re-transmitting a command since reception failure may occur depending on the unit condition.

5.Do not disconnect communication cable or device, or turn ON/OFF the power during communication

Disconnecting the cables or devices constituting the serial interface, or turning ON/OFF the devices during communication may stop operation or generate an error. If this happens, all the devices constituting the serial interface need to be reset to start the operation from the beginning.

6.Make sure that communication driver has been turned OFF before sending next command

For RS422A/485 communication, multiple devices are connected in the same communication line, but only one device whose communication address is specified by PC passes through the communication line. To send all characters safely to PC, the communication line driver is turned OFF a few moments (about 5ms) after sending the last character. If a PC sends a command to the next device before the driver is turned OFF, signals will interfere with each other resulting in communication failure.

- 22 -

8-1. Message Transmission Mode

Two types of message transmission mode are available: RTU (Remote Terminal Unit) mode and ASCII mode, which can be selected using the front keys.

Comparison between RTU and ASCII modes

Item			RTU mode		ASCII mode
Interface			RS232C, RS422A, RS485
Communication system			Half-duplex start-stop synchronization
Transmission speed			9600, 19200, 38400bps
Transmission code			Binary		ASCII
Error check		Vertical		Parity
(Error detection)		Horizontal	CRC-16		LRC
Character		Start bit		1 bit
configuration
		Data length	8 bits		7 bits, 8 bits
		Parity bit	None, odd, even		None*, odd, even
		Stop bit		1bit/2 bits
Message start code			None		: (Colon)
Message end code			None		CR, LF
Data time interval			28-bit time or less		1 second or less

*For the case of 7-bit data, parity bit cannot be “None”.

1.Transmission data

The RTU mode transmits binary data. The ASCII mode divides the 8-bit binary data of RTU into high-order four bits and low-order four bits, and turns them into characters (0 to 9, A to F).

Example: RTU mode			ASCII mode
	67H		36H (“6”)
	89H		37H (“7”)
	ABH		38H (“8”)
			39H (“9”)
			41H (“A”)
			42H (“B”)

The RTU mode enables more efficient transmission since its message is half in length compared to the ASCII mode.

2. Message frame structure

With RTU mode, the message frame consists of message section only.

With ASCII mode, the message frame consists of start character “: (colon, 3AH)”, message and end characters “CR (carriage return, 0DH) + LF (line feed, 0AH)”.

RTU mode			ASCII mode
Message		:	Message	CR	LF

The ASCII mode makes troubleshooting easier since it uses a message start character “:”.

- 23 -

8-2. Data Time Interval

RTU mode: 28-bit time or less (9600bps: 2.8msec, 19200bps: 1.4msec, 38400bps: 0.7msec) ASCII mode: One second or less

When sending a message, keep the time interval between data constituting one message no longer than the time specified above. If it is longer than the time specified above, the receiver side (the unit) recognizes that transmission of data from the sender side is complete, and the data is handled as an abnormal message.

While the RTU mode requires continuous transmission of message characters, the ASCII mode allows for a maximum interval of one second between characters, making it possible to use a master (PC) with a relatively slow processing speed.

8-3. Message Structure

MODBUS message has the following structure which is applied to both RTU and ASCII modes.

Slave address

Function code

Data

Error check

1. Slave address

A slave address can be set in advance using the front keys within the range of 1 to 99. Normally, master device communicates with a single slave device. Only a slave device whose address matches the slave address in a command message from the master device sends a response.

The slave address “0” is used for a message addressed to all slave devices (broadcast) from the master device. In this case, the slave devices do not send a response.

2. Function code

Function codes represent the functions to be executed by slave devices. The data is generally classified as shown in the table below. The table also shows the comparison between MODBUS original functions and MODBUS-compatible CHINO device functions (see section 8-9).

Function code table

Code	Function	Unit	MODBUS original function
			(reference)
01	Read digital (ON/OFF) settings	1 bit	Read coil status
02	Read digital input data	1 bit	Read input relay status
03	Read analog settings	16 bits	Read holding register contents
04	Read analog input data	16 bits	Read input register contents
05	Write digital setting	1 bit	Change single coil status
06	Write analog setting	16 bits	Write to single holding register
08	Send received data (for diagnosis)		Loop-back test
16	Write multiple analog settings		Write to multiple holding registers
70	Read floating data		Arbitrary command of vendors
71	Write floating data		Arbitrary command of vendors

- 24 -

(1)	Digital settings:	Parameters mainly used to change functions such as recording ON/OFF and data printing
		execution.
(2)	Digital input data:	Event status, etc.
(3)	Analog settings:	Information of various settings
		Within the range of 16-bit numeric values (-32768 to 32767)
(4)	Analog input data:	Measured data, unit specifications, etc.
		Outputs a numeric value within the 16-bit range
(5)	Floating data:	When the data cannot be expressed by a numeric value within the 16-bit range (-32768 to
		32767), floating data is used.

3. Data field

Data components depend on the function code. A master request consists of the code number of read/write target data (a relative number obtained from reference number described in the following section) and the number of data pieces. A slave response consists of the data responding to request.

Basic MODBUS data consists of 16-bit integers only, and the use of sign is specified for each data piece. Therefore, real number data such as measured data is expressed by assigning the decimal point position to a separate address to express an integer value, or by fixing the decimal point position and normalizing with the scale upper and lower limits.

This unit employs the system of assigning the decimal point position to a separate address.

The numeric data which cannot be expressed by 16-bit integers can be read or written using floating data.

The data field may contain the data like input data which assigns a specific numeric

! Caution value as error data. When handling such data, perform error judgment on the data before combining with decimal point data.

When decimal point data is combined first, error data is recognized as normal data.

4. Reference number.

All the data handled by the unit has “reference number” assigned, and this number is required when reading/writing data.

The data is classified into “Digital settings”, “Digital input data”, “Analog input data”, “Analog settings” and “Floating data (floating point data)” by its type.

A “relative number” corresponding to the reference number is specified in a message.

Reference numbers and corresponding relative numbers

Data type			Reference No.		Relative No.	MODBUS original function
						(reference)
Digital settings			1 to 10000		Reference No. - 1	Coil
Digital input data			10001 to 20000		Reference No. - 10001	Input relay
Analog input data			30001 to 40000		Reference No. - 30001	Input register
Analog settings			40001 to 50000		Reference No. - 40001	Holding register
Floating data			50001 to 60000		Reference No. - 50001
(Floating point data)

For example, a relative number of “Reference No. 30101 (CH1 data)” described later is “100”.

- 25 -

Quick search table for reference No.

Data type

Parameter

Reference No

Applicable

Reference table

Function code

Key lock

Message printing 1

Recording ON/OFF

Feed

Digital settings

List printing

01 to 95

01 (READ)

See section 8-9.1

Title printing (message printing 2)

05 (WRITE)

Data printing

Recording to SD card ON/OFF

Fast dot printing

SNTP time setting

Remote contact status

Digital input data

Measured data status

10009 to 10480

02 (READ)

See section 8-9.2

Alarm status

Analog input data

Device information

30001 to 30028

04 (READ)

See section 8-9.3

Measured data

30101 to 30148

Channel parameters

40001 to 44394

Date and time setting

Chart speed setting

Dot printing interval setting

Periodic data printing setting

Recording format selection

Zone printing setting

Display setting

Unit-tag switch setting

Range setting

Scale setting

Burnout setting

Sensor correction setting

Recording color setting

Subtract printing setting

Unit setting

Tag setting

Alarm setting

03 (READ)

Analog settings

Calculation setting

06 (WRITE)

See section 8-9.4

Compressed/expanded printing setting

16 (WRITE)

Automatic range-shift setting

Display and recording ON/OFF setting

Communication setting

45001 to 45487

Calendar timer setting

46501 to 46574

Broken line approximation table setting

47001 to 47412

SD card setting

47906 to 47915

Measured value display order setting

47931 to 47954

Title printing (message printing 2)

48001 to 48038

Remote contact setting

48069 to 48088

Operation recording setting

48101 to 48181

Message printing 1 setting

48202 to 48400

Periodic (specified time) data printing setting

48501 to 48549

Formula setting

48601 to 48900

Data communications input setting

49001 to 49048

Fail out setting

49101 to 49119

Communication parameter setting

49902 to 49923

Measured data

50101 to 50124

Data communications input

50201 to 50224

Parameters set by each channel

50301 to 51499

Floating data

Range setting

70 (READ)

Scale setting

See section 8-9.5

(Floating point data)

71 (WRITE)

Alarm value

Calculation setting

Compressed/expanded printing setting

Automatic range-shift setting

- 26 -

5. Error check

The type of error check performed on transmission frame depends on the transmission mode.

RTU mode: CRC-16

ASCII mode: LRC

1)CRC-16 calculation

In CRC system, the data to be transmitted is divided by a generating polynomial and the resulting remainder is appended to the data. The generating polynomial is shown below.

1 + X2 + X15 + X16

Calculation is performed to the part from slave address to the end of data according to the following procedure.

(1)Initialize CRC-16 data (referred to as X) (= FFFFH)

(2)Exclusive logical sum (EX-OR) between data 1 and X → X

(3)Shift X one bit to the right → X

(4)When a carry is generated, perform EX-OR with A001H. If not, go to step (5) → X

(5)Repeat steps (3) and (4) until eight shifts have been performed.

(6)EX-OR between the next data and X → X

(7)Same as steps (3) to (5)

(8)Repeat until the last data.

(9)Create a message of the calculated 16-bit data (X). The low-order portion is followed by the high-order portion.

Example: For [02H] [07H] data, CRC-16 value becomes 1241H therefore the error check data will be [41H] [12H].

- 27 -