YOKOGAWA F3RS22-0N User manual

User’s
Manual
IM 34M6H21-01E
Serial Communication Modules
IM 34M6H21-01E
2nd Edition
Yokogawa Electric Corporation

i
Media No. IM 34M6H21-01E (CD) 2nd Edition : Aug, 2001 (YK) IM 34M6H21-01E 2nd Edition : Aug, 2001-00
All Rights Reserved Copyright  1999, Yokogawa Electric Corporation
Applicable Product:
zRange-free Multi-controller FA-M3
Model: F3RS22-0N
Name: RS-232-C Communication Module
Model: F3RS41-0N
Name: RS-422 Communication Module
The document number and document model code for this manual are given below.
Refer to the document number in all communications; also refer to the document number or
the document model code when purchasing additional copies of this manual.
Document No.: IM 34M6H21-01E
Document Model Code: DOCIM

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IM 34M6H21-01E 2nd Edition : Aug, 2001-00
Important
About This Manual
- This Manual should be passed on to the end user.
- Before using the controller, read this manual thoroughly to have a clear understanding
of the controller.
- This manual explains the functions of this product, but there is no guarantee that they
will suit the particular purpose of the user.
- Under absolutely no circumstancesmay the contents of thismanual be transcribed or
copied, in part or in whole, without permission.
- The contents of this manual are subject to change without prior notice.
- Every effort has been made to ensure accuracy in the preparation of this manual.
However, should any errors or omissions come to the attention of the user, please
contact the nearest Yokogawa Electric representative or sales office.
Safety Precautions when Using/Maintaining the Product
- The following safety symbols are used on the product as well as in this manual.

Danger. This symbol on the product indicates that the operator must follow the
instructions laid out in this instruction manual to avoid the risk of personnel injuries,
fatalities, or damage to the instrument. The manual describes what special care the
operator must exercise to prevent electrical shock or other dangers that mayresult in
injury or the loss of life.
Protective Ground Terminal. Before using the instrument, be sure to ground this
terminal.
Function Ground Terminal. Before using the instrument, be sure to ground this
terminal.
Alternating current. Indicates alternating current.
Direct current. Indicates direct current.


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IM 34M6H21-01E 2nd Edition : Aug, 2001-00
The following symbols are used only in the instruction manual.
WARNING
Indicates a “Warning”.
Draws attention to information essential to prevent hardware damage, software
damage or system failure.
CAUTION
Indicates a “Caution”
Draws attention to information essential to the understanding of operation and
functions.
TIP
Indicates a “TIP”
Gives information that complements the present topic.
SEE ALSO
Indicates a “SEEALSO” reference.
Identifies a source to which to refer.
- For the protection and safe use of the product and the system controlled by it, be sure
to follow the instructions and precautions on safety stated in this manual whenever
handling the product. Take special note that if you handle the product in a manner
other than prescribed in these instructions, the protection feature of the product may
be damaged or impaired. In such cases, Yokogawa cannot guarantee the quality,
performance, function and safety of the product.
- When installing protection and/or safety circuits such as lightning protection devices
and equipment for the product and control system as well as designing or installing
separate protection and/or safety circuits for fool-proof design and fail-safe design of
processes andlines usingthe product and the system controlled byit, the usershould
implement it using devices and equipment, additional to this product.
- If component parts or consumable are to be replaced, be sure to use parts specified
by the company.
- This product is not designed or manufactured to be used in critical applications which
directly affect or threaten human lives and safety — such as nuclear power
equipment, devices using radioactivity, railway facilities, aviation equipment, air
navigation facilities, aviation facilitiesor medical equipment. If so used, it is theuser’s
responsibility to include in the system additional equipment and devices that ensure
personnel safety.
- Do not attempt to modify the product.
Exemption from Responsibility
- Yokogawa Electric Corporation (hereinafter simply referred to as Yokogawa Electric)
makes no warranties regarding the product except those stated in the WARRANTY
that is provided separately.
- Yokogawa Electric assumes no liability to any party for any loss or damage, direct or
indirect, caused by the user or any unpredictable defect of the product.

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IM 34M6H21-01E 2nd Edition : Aug, 2001-00
Software Supplied by the Company
- Yokogawa Electric makes no other warranties expressed or implied except as
provided in its warranty clause for software supplied by the company.
- Use the software with one computer only. You must purchase another copy of the
software for use with each additional computer.
- Copying the software for any purposes other than backup is strictly prohibited.
- Store the original media, such as floppy disks, that contain the software in a safe
place.
- Reverse engineering, such as decompiling of the software, is strictly prohibited.
- No portion of the software supplied by Yokogawa Electric may be transferred,
exchanged, or sublet or leased for use by any third party without prior permission by
Yokogawa Electric.

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IM 34M6H21-01E 2nd Edition : Aug, 2001-00
General Requirements for Using the FA-M3
●Avoid installing the FA-M3 in the following locations:
- Where the instrument will be exposed to direct sunlight, or where the operating
temperature exceeds the range 0qC to 55qC (0qF to 131qF).
- Where the relative humidity is outside the range 10 to 90%, or where sudden
temperature changes may occur and cause condensation.
- Where corrosive or flammable gases are present.
- Where the instrument will be exposed to direct mechanical vibration or shock.
- Where the instrument may be exposed to extreme levels of radioactivity.
●Use the correct types of wire for external wiring:
- Use copper wire with temperature ratings greater than 75qC.
●Securely tighten screws:
- Securely tighten module mounting screws and terminal screws to avoid problems
such as faulty operation.
- Tighten terminal block screws with the correct tightening torque as given in this
manual.
●Securely lock connecting cables:
- Securely lock the connectors of cables, and check them thoroughly before turning on
the power.
●Interlock with emergency-stop circuitry using external relays:
- Equipment incorporating the FA-M3 must be furnished with emergency-stop circuitry
that uses external relays. This circuitry should be set up to interlock correctly with
controller status (stop/run).
●Ground for low impedance:
- For safety reasons, connect the [FG] grounding terminal to a Japanese Industrial
Standards (JIS) Class 3 Ground. For compliance to CE Marking, use cables such as
twisted cables which can ensure low impedance even at high frequencies for
grounding.
●Configure and route cables with noise control considerations:
- Perform installation and wiring that segregates system parts that may likely become
noise sources and system parts that are susceptible to noise. Segregation can be
achieved by measures such as segregating by distance, installing a filter or
segregating the grounding system.
●Configure for CE Marking Conformance:
- For compliance with CE Marking, perform installation and cable routing according to
the description on compliance to CE Marking in the “Hardware Manual”
(IM34M6C11-01E).
●Keep spare parts on hand:
- Stock up on maintenance parts including spare modules, in advance.

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IM 34M6H21-01E 2nd Edition : Aug, 2001-00
●Discharge static electricity before operating the system:
- Because static charge canaccumulate in dryconditions,first touch groundedmetal to
discharge any static electricity before touching the system.
●Never use solvents such as paint thinner for cleaning:
- Gently clean the surfaces of the FA-M3 with a cloth that has been soaked in water or
a neutral detergent and wringed.
- Do not use volatile solvents such as benzine or paint thinner or chemicals for
cleaning, as they may cause deformity, discoloration, or malfunctioning.
●Avoid storing the FA-M3 in places with high temperature or humidity:
- Since the CPU module has a built-in battery, avoid storage in places with high
temperature or humidity.
- Since the service life of the battery is drastically reduced by exposure to high
temperatures, take special care (storage temperature should be from –20qC to
75qC).
- There is a built-in lithium battery in a CPU module and temperature control module
which serves as backup power supply for programs, device information and
configuration information. The service life of this battery is more than 10 years in
standby mode at room temperature. Take note that the service life of the battery may
be shortened when installed or stored at locations of extreme low or high
temperatures. Therefore, we recommend that modules with built-in batteries be
stored at room temperature.
●Always turn off the power before installing or removing modules:
- Failing to turn off the power supplywhen installing or removing modules, mayresult in
damage.
●Do not touch components in the module:
- In some modules you can remove the right-side cover and install ROM packs or
change switch settings. While doing this, do not touch any components on the
printed-circuit board, otherwise components may be damaged and modules may fail
to work.



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IM 34M6H21-01E 2nd Edition : Aug, 2001-00
Waste Electrical and Electronic Equipment
Waste Electrical and Electronic Equipment (WEEE), Directive 2002/96/EC
(This directive is only valid in the EU.)
This product complies with the WEEE Directive (2002/96/EC) marking requirement.
The following marking indicates that you must not discard this electrical/electronic
product in domestic household waste.
Product Category
With reference to the equipment types in the WEEE directive Annex 1, this product is
classified as a “Monitoring and Control instrumentation” product.
Do not dispose in domestic household waste.
When disposing products in the EU, contact your local Yokogawa Europe B. V. office.

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IM 34M6H21-01E 2nd Edition : Aug, 2001-00
Introduction
Overview of the Manual
This manual, “Serial Communication Modules” (IM 34M6H21-01E), explains the
specifications and handling of the Serial Communication of the FA-M3.
Other Manuals
The manuals to reference depends on the CPU type. Refer to the following manuals
accordingly.
 For BASIC CPU modules F3BP20 and F3BP30
-BASIC CPU Module and YM-BASIC/FAProgramming Language (IM 34M6Q22-01E)
 Common for all sequence CPU modules
For the FA-M3 specifications and configurations*1, installation and wiring, test run,
maintenance, and module installation limits for the whole system:
*1: Refer to the relevant product manuals for specifications except for power supply modules, base modules, input/output
modules, cables and terminal units.
- Hardware Manual (IM 34M6C11-01E), 6th Edition or later

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IM 34M6H21-01E 2nd Edition : Aug, 2001-00
Copyrights and Trademarks
Copyrights
Copyrights of the programs and online manual included in this CD-ROM belong to
Yokogawa Electric Corporation.
This online manual may be printed but PDF security settings have been made to prevent
alteration of its contents.
This online manual may only be printed and used for the sole purpose of operating this
product. When using a printed copy of the online manual, pay attention to possible
inconsistencies with the latest version of the online manual. Ensure that the edition
agrees with the latest CD-ROM version.
Copying, passing, selling or distribution (including transferring over computer networks) of
the contents of the online manual, in part or in whole, to any third party, is strictly
prohibited. Registering or recording onto videotapes and other media is also prohibited
without expressed permission of Yokogawa Electric Corporation.
 Trademarks
The trade names and company names referred to in this manual are either trademarks or
registered trademarks of their respective companies.

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IM 34M6H21-01E 2nd Edition : Aug, 2001-00
CONTENTS
Applicable Product....................................................................................i
Important ...................................................................................................ii
Introduction............................................................................................viii
Copyrights and Trademarks....................................................................ix
1. Overview ....................................................................................... 1-1
2. F3RS22-0N .................................................................................... 2-1
2.1 Standard Specifications......................................................................... 2-1
Model and Suffix Codes ......................................................................2-1
Operating Environment........................................................................ 2-1
Physical Specifications........................................................................2-1
Function Specifications........................................................................2-1
Components and Their Functions .......................................................2-3
External Dimensions............................................................................2-3
2.2 External Wiring ....................................................................................... 2-4
Connector Pin Assignments ................................................................2-4
Directly Connecting to an RS-232-C Device (DTE: Data Terminal
Equipment) .......................................................................................... 2-5
Connecting to a Modem (DCE: Data Communication Equipment)..... 2-6
Notes on Wiring...................................................................................2-8
2.3 Attaching and Detaching Modules........................................................ 2-9
3. F3RS41-0N Communication Module........................................... 3-1
3.1 Standard Specifications......................................................................... 3-1
Model and Suffix Codes ......................................................................3-1
Operating Environment........................................................................ 3-1
Physical Specifications........................................................................3-1
Function Specifications........................................................................3-1
Components and their Functions.........................................................3-2
External Dimensions............................................................................3-3
3.2 External Wiring ....................................................................................... 3-4
RS-422/RS-485 Terminal Block...........................................................3-4
Four-Wire System................................................................................3-4
Two-Wire System ................................................................................ 3-5
Notes on Wiring...................................................................................3-5
3.3 Attaching and Detaching Modules........................................................ 3-5
FA-M3
Serial Communication Modules
IM 34M6H21-01E 2nd Edition

TOC-2
IM 34M6H21-01E
2nd Edition : Aug, 2001-00
4. Using the Communication Module ..............................................4-1
4.1 Basic Communications ..........................................................................4-1
Declaring Use of the Module................................................................4-1
Resetting the Module ...........................................................................4-1
Setting Communication Conditions......................................................4-1
Output...................................................................................................4-2
Input ....................................................................................................4-3
4.2 Transmission Text and Format Specifications.....................................4-4
Data Output..........................................................................................4-4
Data Input.............................................................................................4-5
4.3 Efficient Communication........................................................................4-7
Interrupt Input.......................................................................................4-7
TRANSFER..........................................................................................4-8
4.4 Using Registers.....................................................................................4-11
List of Registers .................................................................................4-11
Format of Received Text ....................................................................4-12
XON/XOFF Control............................................................................4-14
Break Signal.......................................................................................4-14
4.5 Special Communications .....................................................................4-15
Long Text............................................................................................4-15
Binary Transmission...........................................................................4-15
Handling Null Codes ..........................................................................4-16
Inserting Binary Data into Text...........................................................4-17
4.6 Multi-point Connection.........................................................................4-18
External Connection...........................................................................4-18
Setting Registers................................................................................4-19
Setting Terminating Resistors ............................................................4-19
Protocol Processing...........................................................................4-20
5. BASIC Statements and Error Codes............................................5-1
5.1 BASIC Statements...................................................................................5-1
5.2 Error Codes..............................................................................................5-2
5.3 Sample Programs....................................................................................5-3
Appendix 1. Signal Description and Direction of
Signal Lines (RS-232-C)......................................Appx. 1-1
Appendix 2. Data Transmission..............................................Appx. 2-1
Appendix 3. ASCII Codes.........................................................Appx. 3-1
Revision Information.................................................................................i

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IM 34M6H21-01E 2nd Edition : Aug, 2001-00
1. Overview
The F3RS22-0N is a communication module that can be used with F3BP20 or F3BP30
BASIC CPU modules for RS-232 communication. It has two ports that use D-sub 9-pin
connectors for connection and allows transmission to a maximum distance of 15 metres.
BASIC statements are available as a means to exchange data through a communication
line. Each port in the F3RS22-0N operates independently and communication error in a
port does not affect operations of the other ports.
The F3RS41-0N is a communication module that can be used with F3BP20 or F3BP30
BASIC CPU modules for RS-422-Aor RS-485 communication. It has one port that uses
a terminal block for connection and allows transmission to a maximum distance of 1200
metres.
BASIC statements are available as a means to exchange data through a communication
line. For details on the differences between RS-422-Aand RS-485 communication,
see Section 3.1, “Standard Specifications Physical Specifications” and Section 4.6,
“Multi-point”.
Table 1.1 Types of Communication Modules
Model Description
F3RS22-0N RS-232-C communication module
F3RS41-0N RS-422 communication module
CAUTION
F3RS22-0N and F3RS41-0N communication modules are not accessible from ladder
sequence CPU modules. They are to be used with F3BP20 and F3BP30 BASIC CPU
modules.

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IM 34M6H21-01E 2nd Edition : Aug, 2001-00
2. F3RS22-0N
2.1 Standard Specifications
Model and Suffix Codes
Model Code Suffix Code Style Code Additional
Code Remarks
F3RS22 -0N …… …… Max. 19200 bps, two RS-232-C ports
Operating Environment
F3RS22-0N can be used with the following CPU modules.
CPU Modules Style
F3BP20
BASIC CPU module F3BP30
Physical Specifications
Item Specifications
Interface EIA RS-232C compliant
Number of communication ports 2 (non-isolated)
Transmission distance 15 m maximum
Connector D-Sub 9-pin (female) M2.6 mm
Current consumption 135 mA
External Dimensions 28.9 (W) u 100 (H) u 83.2 (D) (mm)*
Weight 120 g
* : Dimensions excluding protrusions. See figure on External Dimensions.
Function Specifications
Item Specifications Default
Connection Point-to-point

Communication mode Full-duplex/half-duplex

Synchronization Start-stop

Protocol Non-procedural

Character length 7/8 bits 8 bits
Stop bit length 1/1.5/2 bits 1 bit
Character frame Parity bit None/odd/even Even
Transmission rate 75/150/300/600/1200/2400/4800/9600/19200 bps 4800
RS control (1) Always on
(2) On only when a control line message is being sent (1)
DR check (1) Transmits regardless of the state of DR.
(2) Transmits only when DR is on. (1)
CD check (1) Transmits regardless of the state of CD.
(2) Transmits only when CD is off. (1)
Control/checking
of control line
ER control (1) On (ready)
(2) Off (not ready) On
(to be continued on the next page)

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Item Specifications Default
Transmitting buffer Can buffer one text item (maximum length of 1,024
bytes).

Communic
ation buffer Receiving buffer Rotary (FIFO) buffer of 2,048 bytes

Starting character - Yes/no
- One-character length; any character is acceptable

Ending character
(Terminator)
- Yes/no
- Two-character length maximum; any character
(string) is acceptable
- Also serves as an ending character during
transmission.
$0D
x $0A
(CR-LF)
Designation of number of
characters - Yes
- Effective range: 1 to 1024 (over the communication
line) 1024
Monitored
character-to-character time
interval
- Configurable in 1-ms units; precision: 10 ms
- Effective range: 0 to 32760 (if set to 0, there is no
monitoring of the character-to-character time interval) 1.5 s
Receive
text format
Character-to-character
receiving interval time-out
process Processed as a communication failure/processed as
the normal end of receiving Normal end of receiving
Control method (1) Uncontrolled
(2) Receiving line only
(3) Transmitting line only
(4) Both transmitting and receiving lines Uncontrolled
XON character $11 (DC1)
XON/XOFF
control
XOFF character One-character length; any character is acceptable $13 (DC3)
Transmission code Internal code/ASCII code*1/JIS 8-bit code*2 Internal code (ASCII-
equivalent)
Monitored time before I/O
completion Configurable in 1-ms units from 1 to 32760 ms; accuracy: 10 ms 30 s
I/O
monitoring Monitored time before
transmission start Time not monitored/time monitored (configurable in 1-ms units from 1 to 32760 ms; accuracy: 10 ms) Time not monitored
Break transmission interval Configurable in 1-ms units from 1 to 32760 ms;
accuracy: 10 ms 400 ms
End of receiving Interrupt permitted/prohibited Prohibited
Receive failure Interrupt permitted/prohibited Prohibited
Interrupt
mask
Break receiving Interrupt permitted/prohibited Prohibited
*1 During input, kana and kanji characters are replaced with spaces.
*2 During output, kanji characters are replaced with JIS double-byte codes, while other characters not defined as JIS
characters are replaced with spaces.
Note: JIS code systems: JIS X0201, JIS X0208

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IM 34M6H21-01E 2nd Edition : Aug, 2001-00
Components and Their Functions
External Dimensions
(Unit: mm)
Note: When an RS-232-C cable is connected to the module, add 90 mm to the 83-mm depth across the bottom of the
module to allow for approximately 173 mm as the mounting depth to accommodate the base module, the RS-232-C
connector and the bending radius of the RS-232-C cable,.
2
READY indicator (lit when
the internal circuitry is in
normal operation)
Port 2
1
Port 1
RDY
RS232C
RS22-0N
83.2 28.9
2
6.7
100

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2.2 External Wiring
Connector Pin Assignments
The following figure shows how the module’s connector looks when viewed externally.

Signal Direction
Pin
Number
Signal
Name Name FA-M3 Remote
equipment
Signal
Monitoring
(yes/no) Purpose *
1 CD Data
Carrier
Detect
yes Receives only when this signal is on. Sending proceeds as follows:
(1) Transmits regardless of the state of CD (default).
(2) Transmits only when CD is off.
2 RD Receive
Data no
3 SD Send Data no
4 ER Data
Terminal
Ready
no (1) ER turns on when power is switched on and stays on (default).
(2) Turns on and off by software
5 SG Signal
Ground no
6 DR Data Set
Ready yes Used to check if remote equipment is ready for receiving (1) Receives regardless of the state of DR (default).
(2) Receives only when DR is on.
7 RS Request to
Send no Used when transmitting data to the remote equipment (1) Always on (default).
(2) Turns on only during transmission
8 CS Clear to
Send yes Permission to transmit from the remote equipment. Transmits only when this signal is on.
9 — Unused no no
* : Option (1) or (2) can be set using a BASIC program.
5
1
9
6
D-Sub 9-pin
Connector (Female)

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IM 34M6H21-01E 2nd Edition : Aug, 2001-00
Directly Connecting to an RS-232-C Device (DTE: Data Terminal
Equipment)
zExample internal cable connection diagram for D-sub 25-pin remote
equipment
Note: This example illustrates the case where the remote DTE uses D-sub 25-pin.
Examples of cables with the above internal connection are the YCB cables supplied by Yokogawa.
zExample internal cable connection diagram for D-sub 9-pin remote
equipment
zConnect the shielded wire as instructed below:
(1) Use a cable with connectors housed in metal or metal-plated covers. Connect the
shielded wire directly to the connector covers.
(2) Note that the connector shell of an F3RS22-0N module is connected internally to
the FG (frame ground) terminal of an FA-M3 power supply module.
zIntroduction to Yokogawa-supplied cables
The following null modem cables are available from Yokogawa.
Model Code Suffix Code Specifications
YCB215 RS-232-C null modem cable (with control line) with 9- and 25-pin
connectors
ML gateway card (CP7
 ) for connecting RS-232-C devices.
-KM01 1 m long
-KM055 m long
-KM1515 m long
YCB216 RS-232-C null modem cable (without control line) with 9- and
25-pin connectors
ML gateway card (CP7
 ) for connecting RS-232-C devices
-KM01 1 m long
-KM055 m long
-KM1515 m long
Note: These cables should be terminated for indoor use.
Pin no.
Connector cover
(SD) 3
(RD) 2
(RS) 7
(CS) 8
(DR) 6
(SG) 5
(CD) 1
(ER) 4
Pin no.
Connector cover
3 (SD)
2 (RD)
7 (RS)
8 (CS)
6 (DR)
5 (SG)
1 (CD)
4 (ER)
Remote DTE
D-sub 9-pin
Null-modem cable
Shield
F3RS22-0N
D-sub 9-pin
Pin no.
Connector cover
(SD) 3
(RD) 2
(RS) 7
(CS) 8
(DR) 6
(SG) 5
(CD) 1
(ER) 4
Pin no.
Connector cover
1 (FG)
2 (SD)
3 (RD)
4 (RS)
5 (CS)
6 (DR)
7 (SG)
8 (CD)
20 (ER)
Remote DTE
(D-sub 25-pin)
Null-modem cable
Shield
F3RS22-0N
D-sub 9-pin