YOKOGAWA FA-M3 Vitesse Operating manual

1. Introduction
Technical
Information
TI 34M06Z43-01E
FA-M3 Maintenance Guide
Basic Troubleshooting (for F3SP7□)
TI 34M06Z43-01E
2018.01 1st Edition (YK))
Yokogawa Electric Corporation
www.yokogawa.com/itc/

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All Rights Reserved. Copyright © 2015, Yokogawa Electric Corporation
TI 34M06Z43-01E
1. Introduction
1.1 Introduction
When a sequence CPU module error happens, you can determine its source to some extent by
checking the LED indicators located on the module front and the system log.
Perform the checks described in this document to get vital information, which can help to identify
the source of the error. The error code so obtained can be checked against the error code table
given in Chapter 8, “RAS Functions" of Part A of "Sequence CPU Instruction Manual –
Functions (for F3SP71-4N/4S, F3SP76-7N/7S) " (IM34M06P15-01E) for error cause analysis.
For remedial measures, refer to the user manuals of individual modules concerned.
1.2 Basic Operation of Self-Diagnosis
The sequence CPU module performs self-diagnosis including memory, processor, and ladder
instruction execution checks at power-on and during program execution.
When self-diagnosis detects an error, error-time actions are taken automatically according to the
severity of the error and the LED indicators are updated to reflect the CPU status.
1.3 Basic Checks
To identify the cause of an error, check the following items:
•the LED indicators located on the module front
•the system log of the sequence CPU
•the special registers and special relays
•the relays and registers of advanced function modules

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TI 34M06Z43-01E
2. Checking LEDs
2.1 Checking LEDs
The LEDs located on the module front indicate the health condition of the sequence CPU. The
displayed information of the available LEDs are described in the figure below.
SD ●
EXE ●
US1 ●
US2 ●
RDY
RUN
ALM
ERR
8
4
2
1
SP76-7S CPU
V
MODE
0
SET
0
C
4
8
■ Sequence processing status indicators
RDY: Lit when the CPU is powered, ready and
operating normally.
RUN: Lit when a program is running.
ALM: Indicates a minor failure when lit. Program
execution can continue.
ERR: Indicates a moderate failure when lit. Program
execution can neither begin nor continue.
The power supply module outputs a FAIL
signal.
All LEDs are off: Major failure or power is off.
■ SD card access indicators
Indicates the status of the SD/SDHC memory card
and the execution status of the smart access function.
■ User LEDs
These are user-controllable LED indicators.
■ MODE switch value indicator
Indicates the position of the MODE
rotary switch.

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TI 34M06Z43-01E
2.2 LED Display and Failure Modes
Failure modes (errors) are classified into three levels of severity: major failure, moderate failure
and minor failure.
Severity of Failures and LED Display
Severity
LED Display
Program
execution
Failure Mode (Error)
Major
failure
RDY off
Stops
•CPU error
•Memory error
Moderate
failure
RDY lit
RUN off
ERR Lit
Stops
•Program error
•I/O comparison error *1
•I/O module error *1
•Memory error
•CPU error
•Instruction error *1
•Scan timeout *1
•Startup error
•Invalid instruction found
•Too many I/O points
•Subroutine error *1
•Interrupt error *1
•Subunit communication error*1
•Sensor CB scan timeout*1
•Battery error
Minor
failure
RDY Lit
RUN Lit
ALM Lit
Runs
•Momentary power failure
•Inter-CPU communication error
•Subunit transmitter switching has occurred
•FA link error
*1: This failure mode can be defined as a minor failure or a moderate failure in the configuration.

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TI 34M06Z43-01E
3. Checking System Log
3.1 What is System Log
The FA-M3 logs events, such as errors (ERR/ALM) and power-on events, along with time
information in the CPU. By checking this system log, you can trace the details and time of
occurrence of detected errors.
You can check the system log:
•using the FA-M3 Programming Tool WideField3 or
•using the SD card
3.2 Checking System Log Using FA-M3 Programming Tool WideField3
WideField3 window (online)
②The System Log window
is displayed.
③Check the error information:
Date & time of occurrence: 2018/01/16 15:28:58
Error message: I/O comparison error
Location of error: Block named “BLK_MAIN”
Instruction number “00190N”
①Click [System Log].
You can also monitor the
LED indicators from the
WideField3 window.

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TI 34M06Z43-01E
3.3 Checking System Log using SD Card
System information can be retrieved using the SD card and MODE switch function. This allows
you to check the system log even if the FA-M3 Programming Tool WideField3 is not available.
Switch
value
Switch
Operation
Function
0 to 3
Press & hold
Resets the CPU
1
Press
Switches operating mode
4
Press
Unmounts the SD card
5
Press
Clears all alarms
6
Press
Saves project
7
Press
Gets module information
8
Press
Loads project
9
Press
Copies RAMDISK
A
Press & hold
Formats SD card
B
Press
Copies SD card data to
RAMDISK
C
Press & hold
Restores factory settings
SD ●
EXE ●
US1
US2
RDY
RUN
ALM
ERR
4
2
1
SP76-7S CPU
V
MODE
0
SET
0
C
4
8
SD
（CARD1）
①
②
③
Log file retrieved using SD card
■ System Maintenance Using MODE Switch
Besides retrieving log information, the MODE
switch (+ SD card) provides convenient functions
for switching between operating modes, loading
and saving programs, etc. so you can maintain an
FA-M3 system even without a personal computer!
Tech Tip
■Procedure
①Mount the SD card.
②Set the MODE switch to position 7.
The MODE switch LED displays the
value “4, 2, 1”
③Press and release the SET button within
one second.
④The system log is saved in the top-level
INFO folder on the SD card.
⑤Open and read the file on a PC.

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TI 34M06Z43-01E
4. Checking Special Registers and Special Relays
4.1 What are Special Registers and Special Relays?
Special registers and specials relays are registers and relays that have specific functions relating
to, say, the internal state and errors of the FA-M3. When an error is detected and logged in the
system log, the self-diagnosis result may also be saved in special registers (Z) in the sequence
CPU module.
In addition, a special relay (M) corresponding to the error is set. This special relay may be
checked in a ladder program for error detection purposes. Refer to the following table for
mapping error messages to special registers and special relays.
Mapping Failures to Special Registers and Special Relays
Severity of
Failure
Failure Classification
LED
Indicators
Special Relay
that Turns On
Special
Registers
Storing Error
Code
Major failure
System error
All LEDs are
off.
－
－
Moderate
failure
Self-diagnosis
error
Startup error
ERR is lit
M193
Z017 to Z019
Boot mode error
SPU error
memory error
Invalid instruction
found
Program error
Battery error or memory check
pattern error
M194
－
Moderate
failure or
minor failure
(user-defined)
Instruction
processing
error
Subroutine error
ERR is lit if
defined as
moderate
failure;
ALM is lit if
defined as
minor failure
M201
Z022 to Z024
Interrupt error
Instruction error
Macro instruction
error
I/O comparison error
M202
Z027 to Z029
I/O module error
M203
Z033 to Z040
Scan timeout
M204
－
Sensor CB scan timeout
M212
－
Subunit communication error
M210
Z089 to Z096
Minor failure
Momentary power failure
ALM is lit
M195
－
Inter-CPU communication error
M196
－
Subunit transmitter switching has
occurred
M211
Z089 to Z096
FA link (1 to 8) error
M0273-M0368
M0369-M0480
M8321-M8432
M8433-M8544
M8545-M8656
M8657-M8768
M8769-M8880
M8881-M8992
－

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TI 34M06Z43-01E
4.2 How to Check Special Registers and Special Relays
You can check special registers and special relays using the FA-M3 Programming Tool WideField3,
either from the Common Tag Definition Monitor, or the Device Monitor. The following figure shows
example screen captures when an instruction processing error is detected.
How to Check Special Relays and Special Registers
Device Monitor: Special Relays
Device Monitor: Special Registers
Common tag Definition Monitor
■ Registered Device Monitor
If you know the devices to be monitored
beforehand, .pre-register them using the
Registered Device Monitor to save the
effort of searching for them every time and
thus improve efficiency!
Pre-register devices to be monitored.
Tech Tip

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TI 34M06Z43-01E
4.3 How to Check Other Devices
Besides special relays and registers, other devices can be monitored similarly.
How to Check Device Data
The procedure is similar for special relay and
special register.
Click the device type to be monitored.
Tech Tip
■Balloon comments and monitors
Is it tedious to open the monitor window
repeatedly when monitoring a device? For a
fixed device, you can place a device monitor
on a ladder program like a post-it note. This
is especially handy for monitoring device
data changes in tandem with program
execution.
Place device monitors on a
ladder program like post-it notes.
You can use balloons as written memos too.

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TI 34M06Z43-01E
5. Advanced Function Module Monitor
5.1 What is Advanced Function Module Monitor
Advanced function modules such as temperature control and PID modules and positioning
modules have a self-diagnosis function, which stores error information in the module’s own
registers or relays when it detects an error.
The Advanced Function Module Monitor directly monitors the registers and relays of such
advanced function modules. With this convenience function, there is no need to write programs
that read register and relay data for monitoring purposes only.
5.2 How to Check Advanced Function Module Registers
In the online window of the FA-M3 Programming Tool WideField3, right-click the module to be
monitored from the module list displayed on the left side of the window and select either the
Advanced Function Module Register Monitor or the I/O Relay Monitor*. You can now monitor
registers and relays of the selected module.
* A module with the I/O Relay Monitor option displayed as grayed-out has no relay.
Internal registers of F3AD08
Module list
How to Check Using Advanced Function Module Monitor
(Example showing Register Monitor for F3AD08/F3HA12)
Internal registers of F3HA12