Panasonic FPS Series - User Manual

Questions and Answers

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bmasonAug 17, 2025
Why is the ERROR/ALARM LED on my Panasonic FPS ON?
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  mariatuckerAug 17, 2025
  If the ERROR/ALARM LED is ON because the system watchdog timer has been activated, set the mode selector of the Panasonic Controller from RUN to PROG mode and turn the power off and then on. If the ERROR/ALARM LED turns on again, there is probably an abnormality in the CPU. Please contact your dealer. If the program execution time is too long, set the mode selector from PROG to RUN mode. If the ERROR/ALARM LED turns on, check if instructions such as JP or LOOP are programmed in such a way that a scan can never finish. Also, make sure that interrupt instructions are executed in succession. Finally, check if the ERROR/ALARM LED is flashing.
T
Thomas AllenAug 20, 2025
What to do if Input indicator LEDs are ON in Panasonic FPS?
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  Travis ShieldsAug 20, 2025
  If the input indicator LEDs are ON, monitor the input condition using FPWIN Pro. If the input monitored is TRUE, check the leakage current at the input devices and check the program again. Also, check for duplicate output errors and for outputs having been rewritten by high-level instructions. Check the program flow when instructions such as MC or JP are used. If the input monitored is FALSE, please contact your dealer.
C
Courtney EdwardsAug 23, 2025
What to do if Input indicator LEDs are OFF in Panasonic FPS Controller?
- E
  Edward HodgesAug 23, 2025
  If the input indicator LEDs are OFF, check the wiring of the input devices and check that the power is properly supplied to the input terminals. If the power is not supplied to the input terminal, check the input device and input power supply. If the power is properly supplied to the input terminal, please contact your dealer.
M
Mr. Greg JonesAug 26, 2025
What to do if Output indicator LEDs are OFF in Panasonic FPS?
- K
  Keith BrockAug 26, 2025
  If the output indicator LEDs are OFF, monitor the output condition using FPWIN Pro. If the output monitored is TRUE, set the output to TRUE by force using FPWIN Pro. If the output indicator LED remains OFF, please contact your dealer.
M
Misty AguilarAug 28, 2025
How to fix ERROR/ALARM LED flashing on Panasonic Controller?
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  Carlos MorrisAug 28, 2025
  If the ERROR/ALARM LED is flashing on your Panasonic Controller, choose [Clear] in the PLC Status dialog box while in PROG mode. Alternatively, turn the power supply off/on while in PROG mode (this clears all of the contents of the operation memory except hold type data). As another option, execute the self-diagnostic error set instruction F148_ERR.
T
Terri GonzalezAug 31, 2025
Why are all LEDs OFF on my Panasonic Controller?
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  tanyabrownAug 31, 2025
  If all LEDs are OFF on your Panasonic Controller, check the power supply wiring. Also, check if the power supplied to the CPU is in the range of the rating and be sure to check the fluctuation in the power supply. If the power supplied to the CPU is shared with other devices, disconnect the power supply wiring to the other devices. If the LEDs on the CPU turn on at this moment, increase the capacity of the power supply or prepare another power supply for other devices. Please contact your dealer for further information.
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kathleen58Sep 2, 2025
What to do if outputs do not function correctly on Panasonic FPS?
- K
  Katie VazquezSep 2, 2025
  To troubleshoot output malfunctions in your Panasonic Controller, first, check the wiring of the loads. Then, check if the power is properly supplied to the loads. If the power is properly supplied to the load, check the load again for any abnormalities. If the power is not supplied to the load, please contact your dealer.
D
dcruzSep 5, 2025
How to fix Panasonic FPS Controller PROG Mode when it does not Change to RUN?
- J
  Jasmine KelleySep 5, 2025
  If the PROG mode does not change to RUN on your Panasonic Controller, check to see if the ERROR/ALARM LED is flashing. Locate the syntax error by executing Monitor ? PLC Status.
J
Julie ClarkSep 8, 2025
How to resolve Password Protection Error Message on Panasonic FPS?
- A
  Abigail Singh DDSSep 8, 2025
  To resolve password protection errors on your Panasonic Controller, navigate to Online ? Security Settings. Then, enter your password under "PLC Access" and choose [Login].
J
James SaundersSep 12, 2025
How to troubleshoot No RS485 Communication on Panasonic Controller?
- S
  Samuel CastanedaSep 12, 2025
  To troubleshoot No RS485 Communication in your Panasonic Controller, make sure the transmission cables have been securely connected between the two (+) terminals and the two (-) terminals of the stations. Ensure the characteristics of the transmission cables are within the specified range and all cables in the link are of the same type. Verify the terminating resistors have been correctly set on the first and on the last station only. Check that link areas do not overlap. When using FPG-COM4, set the baud rate in the system registers to either 19200bit/s or 115200bit/s and set DIP switch SW1-2 of the cassette to the same setting.

Summary

Chapter 1 Safety Measures

1.1 Safety Measures

Discusses operating environment, static electricity, and power supply protection for safe unit operation.

Chapter 2 Overview

2.1 Features

Highlights the FPΣ PLC's capabilities, communication functions, analog control, and positioning control.

2.2 Unit Types

Lists available FPΣ CPU models, expansion units, and communication cassettes with their specifications.

2.3 Restrictions on Unit Combinations

Outlines limitations on connecting FP0 and FPΣ expansion units to the CPU and their combinations.

2.4 Programming Tools

Lists required programming software like FPWIN Pro and RS232C programming cables for FPΣ.

Chapter 3 CPU Types

3.1 Parts and Functions

Details the CPU's components: operation status LEDs, mode selector, communication LEDs, and TOOL port.

3.2 Input and Output Specifications

Provides detailed electrical specifications for FPΣ CPU input and output terminals.

3.3 Terminal Layout

Illustrates terminal layouts for C32, C28, and C24 CPUs, showing input and output connector pin assignments.

3.4 Analog Potentiometer

Explains the function of analog potentiometers and their associated system variables and data registers.

3.5 Thermistor Input Functions

Details how thermistor resistance is read as analog input and provides suitable thermistor types and data loading.

3.6 Clock;Calendar Function

Explains the clock/calendar function, its memory area, settings, and sample programs.

Chapter 4 Expansion

4.1 Expansion Methods

Explains methods for expanding the FPΣ using dedicated FPΣ, FP0 units, and communication cassettes.

4.2 FPΣ I;O Expansion Units

Details parts, functions, specifications, and terminal layout of FPΣ I/O expansion units.

4.3 FPΣ Memory Expansion Unit

Describes the parts, functions, general/performance specifications, data organization, and access methods.

4.4 Other FPΣ Expansion Units

Refers to other sections and dedicated manuals for information on additional FPΣ expansion units.

4.5 Communication Cassettes

Lists the available types of communication cassettes and their corresponding page references for application details.

Chapter 5 I;O Allocation

5.1 General

Explains how I/O allocation is automatically determined by installation location for expansion units.

5.2 FPΣ CPU

Details the fixed I/O allocation for different FPΣ CPU types, including I/O points and addresses.

5.3 FPΣ Expansion Units

Lists I/O addresses for FPΣ expansion units, allocated from the unit nearest to the CPU in ascending order.

5.4 FP0 Expansion Units

Explains I/O allocation for FP0 expansion units based on their installation location relative to the CPU.

Chapter 6 Installation and Wiring

6.1 Installation

Provides guidelines for the operating environment, static electricity precautions, and heat discharge measures for installation.

6.2 Safety Instructions for Wiring

Covers wiring safety, including interlock circuits, emergency stops, start-up sequences, grounding, and power failures.

6.3 Wiring the Power Supply

Details power supply wiring, specifications, and notes on noise reduction and protection.

6.4 Input and Output Wiring

Provides wiring recommendations for input devices and output circuits, including protective circuits for loads.

6.5 Wiring the MIL Connector

Details wiring methods, ordering information, suitable wires, and optional cables for MIL connectors.

6.6 Wiring the Terminal Block

Explains wiring for screw-type terminal blocks, including suitable wires and notes on proper connection.

6.7 Wiring the Communication Cassette

Describes wiring for communication cassettes, including suitable wires and notes on proper connection.

6.8 Backup Battery

Details backup battery installation, replacement, error alarms, and lifetime to ensure data retention.

Chapter 7 High-Speed Counter and Pulse Output

7.1 Overview

Introduces high-speed counting, pulse output, and PWM output functions for positioning and measurement.

7.2 Function Specifications and Restrictions

Contains specifications and restrictions for high-speed counter, pulse output, and PWM output functions.

7.3 High-Speed Counter Function

Explains high-speed counter function, including count input modes, system register settings, and control code.

7.4 Pulse Output Function

Details pulse output methods, position control modes, I/O allocation, instructions, and system variables.

Chapter 8 Communication

8.1 Communication Modes

Lists communication modes like MEWTOCOL-COM, Program controlled, PLC Link, and Modbus RTU.

8.2 Communication Cassettes

Lists types of communication cassettes, their status LEDs, and specific details for COM1, COM2, COM3, and COM4.

8.3 Communication Specifications

Details communication specifications for RS232C and RS485 interfaces, including modes, methods, and baud rates.

8.4 Communication Parameters

Explains how to set communication parameters like mode, station number, baud rate, and format in system registers.

8.5 MEWTOCOL-COM

Covers MEWTOCOL-COM Master/Slave functions, command/response formats, commands, and settings.

8.6 Program Controlled Communication

Details program controlled communication, including sending/receiving data, parameters, and flag operations.

8.7 PLC Link

Explains PLC Link for connecting PLCs, parameters, link area allocation, response time, and connection examples.

8.8 Modbus RTU Communication

Describes Modbus RTU protocol for master/slave communication, command frames, responses, and supported commands.

Chapter 9 Security Functions

9.1 Security Function Types

Lists available security settings: PLC program upload protection, password protection, and FP Memory Loader security.

9.2 Security Settings in FPWIN Pro

Explains security settings in FPWIN Pro, including upload protection and PLC password protection.

9.3 FP Memory Loader

Details the FP Memory Loader's capabilities for program transfer and security settings like upload and download protection.

Chapter 10 Other Functions

10.1 F-ROM Backup (P13_EPWT)

Details writing data registers to the built-in F-ROM using the P13_EPWT instruction and its limitations.

10.2 Sampling Trace

Explains the sampling trace function for displaying variable values on a time axis with configurable parameters.

Chapter 11 Troubleshooting

11.1 LED Display for Status Condition

Describes the status indicator LEDs on the CPU for normal and abnormal conditions, including error indications.

11.2 Operation on Error

Explains how the CPU handles errors, allowing user selection for continued operation or stop based on error type.

11.3 ERROR;ALARM LED is Flashing

Provides steps to check error codes using the programming tool and methods to clear errors.

11.4 ERROR;ALARM LED is ON

Describes remedies for the ERROR/ALARM LED being ON, related to system watchdog timer activation or long program execution times.

11.5 All LEDs are OFF

Suggests troubleshooting steps for when all LEDs are OFF, focusing on power supply checks and wiring.

11.6 Diagnosing Output Malfunction

Guides on diagnosing output malfunctions by checking loads, power supply, and input conditions.

11.7 Password Protection Error Message

Explains how to handle password protection error messages by logging in via Security Settings.

11.8 PROG Mode does not Change to RUN

Provides troubleshooting steps for PROG mode not changing to RUN, related to syntax or self-diagnostic errors.

11.9 No RS485 Communication

Offers troubleshooting steps for RS485 communication errors, checking cables, terminating resistors, and link areas.

11.10 No RS232 C Communication

Provides troubleshooting steps for RS232C communication errors, checking RD/SD connections, CS signal, and link areas.

Chapter 12 Appendix

12.1 General Specifications

Provides general specifications including operating voltage, momentary power off time, ambient conditions, and breakdown voltage.

12.2 Performance Specifications

Details performance specifications for CPU, expansion units, and communication cassettes, including I/O points and speeds.

12.3 I;O Allocation

Explains I/O allocation for FPΣ CPUs and expansion units, showing addresses based on unit type and installation.

12.4 Dimensions

Shows dimension diagrams for CPUs, expansion units, and communication cassettes.

12.5 Relays and Memory Areas

Lists relay types, memory sizes, available addresses, and functions, differentiating between bit and word areas.

12.6 System Registers

Details system registers used for setting parameters, functions, and communication modes, including tables for checking and changing values.

12.7 Error Codes

Lists various error codes including compiler errors (E1-E8), self-diagnostic errors, and MEWTOCOL-COM errors with descriptions.

12.8 MEWTOCOL-COM Communication Commands

Provides a reference list of MEWTOCOL-COM commands with their codes and descriptions for communication operations.

12.9 Data Types

Defines elementary and user-defined data types used in FPWIN Pro, including their abbreviations, descriptions, and ranges.

12.10 Hexadecimal;Binary;BCD

Provides conversion tables for decimal numbers to hexadecimal, binary, and BCD data formats.

12.11 ASCII Codes

Displays ASCII codes with their corresponding hexadecimal, binary representations, and bit assignments.

Panasonic FPS Series Specifications

General

Type	PLC
Communication	RS-232, RS-485
I/O	Digital
Input Voltage	24 VDC
Output Type	Relay, Transistor
Number of I/O Points	16, 32, 64, 128
Operating Temperature	0°C to 55°C