Panasonic FP7 Series User manual

PROGRAMMABLE CONTROLLER
FP7 CPU Unit
User's Manual
Hardware
WUME-FP7CPUH-07
2019.11 panasonic.net/id/pidsx/global

Safety Precautions
Observe the following notices to ensure personal safety or to prevent accidents.
To ensure that you use this product correctly, read this User’s Manual thoroughly before use.
Make sure that you fully understand the product and information on safety.
This manual uses two safety flags to indicate different levels of danger.
If critical situations that could lead to user’s death or serious injury is assumed by
mishandling of the product.
WARNING
-Always take precautions to ensure the overall safety of your system, so that the whole
system remains safe in the event of failure of this product or other external factor.
-Do not use this product in areas with inflammable gas. It could lead to an explosion.
-Exposing this product to excessive heat or open flames could cause damage to the lithium
battery or other electronic parts.
-Battery may explode if mistreated. Do not recharge, disassemble or dispose of fire.
If critical situations that could lead to user’s injury or only property damage is
assumed by mishandling of the product.
CAUTION
-To prevent excessive exothermic heat or smoke generation, use this product at the values
less than the maximum of the characteristics and performance that are assured in these
specifications.
-Do not dismantle or remodel the product. It could cause excessive exothermic heat or smoke
generation.
-Do not touch the terminal while turning on electricity. It could lead to an electric shock.
-Use the external devices to function the emergency stop and interlock circuit.
-Connect the wires or connectors securely.
The loose connection could cause excessive exothermic heat or smoke generation.
-Ground the protective earth (PE) terminal (Class D grounding). Failure to do so could lead to
an electric shock.
-Do not allow foreign matters such as liquid, flammable materials, metals to go into the inside
of the product. It could cause excessive exothermic heat or smoke generation.
-Do not undertake construction (such as connection and disconnection) while the power
supply is on. It could lead to an electric shock.
Copyright / Trademarks
-This manual and its contents are copyrighted.
-You may not copy this manual, in whole or part, without written consent of Panasonic
Industrial Devices SUNX Co., Ltd.
-Windows is a registered trademark of Microsoft Corporation in the United States and other
countries.
-Ethernet is a registered trademark of Fuji Xerox Co., Ltd. and Xerox Corp.
-All other company names and product names are trademarks or registered trademarks of
their respective owners.
PLC_BATPE_ET

Introduction
i
Introduction
Thank you for buying a Panasonic product. Before you use the product, please carefully read
the installation instructions and the users manual, and understand their contents in detail to
use the product properly.

ii
Types of Manual
Types of Manual
•There are different types of users manual for the FP7 series, as listed below. Please refer to
a relevant manual for the unit and purpose of your use.
•The manuals can be downloaded on our website:
https://industrial.panasonic.com/ac/e/dl_center/manual/ .
Unit name or purpose of
use Manual name Manual code
FP7 Power Supply Unit FP7 CPU Unit Users Manual (Hardware) WUME-FP7CPUH
FP7 CPU Unit
FP7 CPU Unit Command Reference Manual WUME-FP7CPUPGR
FP7 CPU Unit Users Manual
(Logging Trace Function) WUME-FP7CPULOG
FP7 CPU Unit Users Manual (Security Function) WUME-FP7CPUSEC
Instructions for Built-in
LAN Port
FP7 CPU Unit Users Manual
(LAN Port Communication) WUME-FP7LAN
FP7 CPU Unit Users Manual
(Ethernet Expansion Function) WUME-FP7CPUETEX
Instructions for Built-in
COM Port
FP7 series Users Manual (SCU communication) WUME-FP7COM
FP7 Extension Cassette
(Communication)
(RS-232C/RS485 type)
FP7 Extension Cassette
(Communication)
(Ethernet type)
FP7 series Users Manual (Communication
cassette Ethernet type) WUME-FP7CCET
FP7 Extension (Function)
Cassette
Analog Cassette
FP7 Analog Cassette Users Manual WUME-FP7FCA
FP7 Digital Input/Output Unit FP7 Digital Input/Output Unit Users Manual WUME-FP7DIO
FP7 Analog Input Unit FP7 Analog Input Unit Users Manual WUME-FP7AIH
FP7 Analog Output Unit FP7 Analog Output Unit Users Manual WUME-FP7AOH
Thermocouple multi-analog
input unit Thermocouple multi-analog input unit
RTD input unit
Users Manual
WUME-FP7TCRTD
RTD input unit
FP7 High-speed counter Unit FP7 High-speed counter Unit Users Manual WUME-FP7HSC
FP7 Pulse Output Unit FP7 Pulse Output Unit Users Manual WUME-FP7PG
FP7 Positioning Unit FP7 Positioning Unit Users Manual WUME-FP7POSP
FP7 Serial Communication
Unit FP7 series Users Manual (SCU communication) WUME-FP7COM
PHLS System PHLS System Users Manual WUME-PHLS
Programming Software
FPWIN GR7 FPWIN GR7 Introduction Guidance WUME-FPWINGR7

Selection of CPU Units
iii
Selection of CPU Units
Note the following points when selecting a CPU unit.
Specification changes of CPU unit
•The firmware version of CPU units has been changed in accordance with the extension of
the specifications. Specify units with new model numbers.
Conventional
model number
（
Ver.1
）
New model number
（
Ver.2 / Ver.3
）
Program
capacity
Ethernet
function
With Encryption
function
No Eencryption
function
With Encryption
function
196K steps Available AFP7CPS4E →AFP7CPS41E AFP7CPS41ES
120K steps
Available AFP7CPS3E →AFP7CPS31E AFP7CPS31ES
Not available AFP7CPS3 →AFP7CPS31 AFP7CPS31S
•The CPU units Ver.2 and Ver.3 are upward compatible with the conventional Ver.1.
•For using CPU units Ver.2, Ver.2.0 or later version of FPWIN GR7 is required.
•For using CPU units Ver.3, Ver.2.4 or later version of FPWIN GR7 is required.
•For using the projects (programs, comments and configuration data) created for the
conventinal CPUs Ver.1, the projects must be converted to the projects for CPU units Ver.2
or Ver.3 using the "Convert PLC Type" function of the tool software.
•For information on the CPU versions and FPWIN GR7 version that can be used with each
unit and extension cassettes, refer to "1.2 Restrictions on Combinations of Units".
•The layout of the operation monitor LEDs on Ver.1 of the CPU unit is different from that on
Ver.2 or later.
Regulations on Encryption function in China
•Some CPU units have the encryption function which encrypts a part or all parts of programs
in projects.
•In China, the types equipped with the encryption function cannot be used as they are subject
to "Regulation of Commercial Encryption Codes". For using machines or systems
incorporating FP7 series in China, or exporting and importing them, select the types without
the encryption function.

iv
Table of Contents
Table of Contents
1. Overview .............................................................................. 1-1
1.1 System Configuration ............................................................................. 1-2
1.1.1 List of Units..............................................................................................1-2
1.2 Restrictions on Combinations of Units ................................................... 1-4
1.2.1 CPU Unit Type ........................................................................................1-4
1.2.2 Common Restrictions on Each Unit ........................................................1-5
1.2.3 Restrictions on the Number of Installed Units.........................................1-5
1.2.4 Restrictions on the Combination of Extension Cassettes .......................1-6
1.2.5 Restrictions on Communication Functions to be Used ...........................1-6
1.2.6 Unit to be Used and Applicable Versions................................................1-7
1.3 Restrictions on Using Expansion Unit .................................................... 1-8
1.3.1 Configuration When Using Expansion Unit.............................................1-8
1.3.2 Restrictions on Combinations of Units ....................................................1-9
1.3.3 Installation Position of Units and Access Time .....................................1-10
1.3.4 Restrictions on Configuration Capacity .................................................1-10
1.4 Selection of Power Supply and Restrictions on Combination .............. 1-12
1.4.1 Power Supply for Internal Circuit...........................................................1-12
1.4.2 List of Power Supply Unit's Current Consumption for Internal Circuit...1-14
1.4.3 Power Supply for External Circuit .........................................................1-16
1.5 Programming Tools .............................................................................. 1-17
2. Names and Functions of Parts .......................................... 2-1
2.1 CPU Unit (CPS4*/CPS3*) ...................................................................... 2-2
2.2 CPU Unit (CPS21).................................................................................. 2-5

Table of Contents
v
2.3 Power Supply Unit .................................................................................. 2-7
2.4 Expansion Master Unit / Expansion Slave Unit ...................................... 2-8
3. I/O Number Allocation.........................................................3-1
3.1 Basics of I/O Allocation........................................................................... 3-2
3.1.1 How to Count the I/O Numbers...............................................................3-2
3.1.2 Concept of I/O Number Allocation...........................................................3-2
3.1.3 List of Occupied I/O Points for Each Unit................................................3-4
3.2 Optional Allocation Using FPWIN GR7................................................... 3-6
3.2.1 Registration of a Unit to be Used and the Starting Word Number..........3-6
3.2.2 Optional Settings in the “Unit Selection” Dialog Box...............................3-8
3.2.3 Settings When Using Expansion Unit .....................................................3-9
3.3 Mount Allocation Using FPWIN GR7 .................................................... 3-10
3.3.1 Mount Registration of a Unit to be Used and the Starting Word Number3-10
3.3.2 Changing the Starting Word Number....................................................3-11
3.4 I/O Map Registration............................................................................. 3-12
3.4.1 I/O Map Registration .............................................................................3-12
3.4.2 I/O Map Clearance ................................................................................3-12
4. Installation and Wiring ........................................................4-1
4.1 Installation............................................................................................... 4-2
4.1.1 Installation Environment and Space .......................................................4-2
4.1.2 Attaching Units ........................................................................................4-4
4.1.3 DIN Rail Attachment................................................................................4-6
4.2 Wiring the Power Supply ........................................................................ 4-8
4.2.1 Common Precautions..............................................................................4-8
4.2.2 Wiring for Power Supply Units ................................................................4-9
4.2.3 Wiring for the Power Supply Part of the CPU Unit................................4-10
4.2.4 Wiring of Power Supply Part of Expansion Slave Unit..........................4-10

vi
Table of Contents
4.2.5 Grounding..............................................................................................4-11
4.3 Wiring of Expansion Cable ................................................................... 4-12
4.3.1 Expansion Cable Type ..........................................................................4-12
4.3.2 Connection of Function Earth Wire .......................................................4-12
4.3.3 Connecting Position and Direction of Expansion Cables......................4-13
4.4 Safety Measures .................................................................................. 4-14
4.4.1 Safety Circuit .........................................................................................4-14
4.4.2 Momentary Power Drop ........................................................................4-14
4.4.3 Alarm Output .........................................................................................4-15
5. Operation ............................................................................. 5-1
5.1 Before Powering On ............................................................................... 5-2
5.1.1 Check Points ...........................................................................................5-2
5.1.2 Procedures before Starting Operation ....................................................5-3
5.2 RAM/ROM Operation ............................................................................. 5-4
5.2.1 Transmission of the Project.....................................................................5-4
5.2.2 Operations following Powering On..........................................................5-5
5.2.3 Data Hold During Power Failure .............................................................5-6
5.2.4 Online Editing ..........................................................................................5-6
5.3 Backing Up the Project........................................................................... 5-7
5.3.1 Transmission from the Execution Memory RAM to the Backup Memory
ROM2 ......................................................................................................5-7
5.3.2 Transmission from the Backup Memory ROM2 to the Execution Memory
RAM/ROM1 .............................................................................................5-8
5.3.3 Operations following Powering On/Off ....................................................5-8
5.4 SD Memory Card Operation................................................................... 5-9
5.4.1 Preparing SD Memory Cards ..................................................................5-9
5.4.2 How to Insert an SD Memory Card .......................................................5-10
5.4.3 Saving an Execution File for SD Memory Card Operation....................5-11
5.4.4 Operation by an SD Memory Card........................................................5-12
5.4.5 Transmission from an SD Memory Card to the Execution Memory......5-14
5.4.6 Precautions Concerning SD Memory Card Operation ..........................5-15

Table of Contents
vii
5.5 Operation When Using Expansion Master Unit/Slave Unit................... 5-16
5.5.1 Operation When Power Supply Turns ON/OFF....................................5-16
5.5.2 Insertion and Removal of Expansion Cable..........................................5-16
6. Troubleshooting ..................................................................6-1
6.1 Self-Diagnosis Function.......................................................................... 6-2
6.1.1 CPU Unit's Operation Monitor LED.........................................................6-2
6.1.2 Operation at the Time of Error ................................................................6-2
6.2 What to Do If an Error Occurs ................................................................ 6-3
6.2.1 ERROR LED Flashes on the CPU Unit ..................................................6-3
6.2.2 PROG Mode Does Not Change to RUN .................................................6-4
6.2.3 ALARM LED Turns ON on the CPU Unit ................................................6-4
6.2.4 POWER LED Does Not Turn ON on the Power Supply Unit..................6-5
6.2.5 A Protect Error Message Appears ..........................................................6-5
6.2.6 If Expected Output Is Not Available ........................................................6-6
6.2.7 ERR LED Turns ON on the Expansion Unit............................................6-7
7. Maintenance and Inspection ..............................................7-1
7.1 Handling of Backup Battery .................................................................... 7-2
7.1.1 Functions of Backup Battery ...................................................................7-2
7.1.2 Replacement of Backup Battery..............................................................7-3
7.1.3 Lifetime and Replacement Interval of Backup Battery............................7-4
7.2 Inspection ............................................................................................... 7-5
8. Specifications ......................................................................8-1
8.1 CPU Unit Specifications.......................................................................... 8-2
8.1.1 General Specifications ............................................................................8-2
8.1.2 Performance Specifications ....................................................................8-4
8.1.3 CPU Unit Communication Specifications................................................8-6

viii
Table of Contents
8.1.4 Operation Memory Area..........................................................................8-8
8.1.5 List of System Relays............................................................................8-10
8.1.6 List of System Data Registers...............................................................8-17
8.1.7 Error/Warning Codes Tables.................................................................8-20
8.2 Power Supply Unit Specifications......................................................... 8-27
8.2.1 General Specifications ..........................................................................8-27
8.2.2 Performance Specifications...................................................................8-28
8.2.3 Alarm Output Specifications..................................................................8-28
8.3 Dimensions........................................................................................... 8-29
8.3.1 Power Supply Unit.................................................................................8-29
8.3.2 CPU Unit (CPS4*/CPS3*) .....................................................................8-30
8.3.3 CPU Unit (CPS21).................................................................................8-30
8.3.4 Terminal Block Type Unit (1).................................................................8-31
8.3.5 Terminal Block Type Unit (2).................................................................8-31
8.3.6 Connector Type Unit .............................................................................8-32
8.3.7 Serial Communication Unit....................................................................8-33
8.3.8 PHLS Master Unit..................................................................................8-33
8.3.9 End Unit.................................................................................................8-34
8.3.10 Figures of Unit Combination..................................................................8-35

1
Overview

1-2
Overview
1.1 System Configuration
1.1.1 List of Units
③Digital I/O Units
Model number
AFP7X16DW
Remarks
Input 16-point, 12 to 24VDC
AFP7Y16R Output 16-point, Relay
AFP7Y16T Output 16-point, Sink type
AFP7Y16P
Output 16-point, Source type
Model number
AFP7XY64D2T
Remarks
Input 32-point, 24V DC
Output 32-point, Sink type
AFP7X64D2 Input 64-point, 24V DC
AFP7Y64T Output 64-point, Sink type
AFP7Y64P
Output 64-point, Source type
AFP7XY64D2P
Input 32-point, 24V DC
Output 32-point, Source type
Model number
AFP7X32D2
Remarks
Input 32-point, 24V DC
AFP7Y32T Output 32-point, Sink type
AFP7Y32P
Output 32-point, Source type
①Power Supply Unit
Model number
AFP7PSA1
Remarks
100 to 240V AC, 24W
Model number
AFP7PSA2
Remarks
100 to 240V AC, 43W
135
2
4
67
AFP7AD4H
AFP7AD8 Input 8ch
AFP7DA4H
AFP7TC8 Thermocouple, Input 8ch
AFP7RTD8 RTD,Input 8ch
③High-speed Counter Unit
Model number
AFP7HSC2T
Remarks
2ch
Model number
AFP7HSC4T
Remarks
4ch
③Analog I/O Units
Model number
Remarks
Input 4ch
Output 4ch
Model number
Remarks
②CPU Unit
AFP7CPS41E
196k steps
With Ethernet function
120k steps
With Ethernet function
AFP7CPS31E
AFP7CPS41ES
AFP7CPS31ES
120k steps
With Ethernet function
With Encryption function
196k steps
With Ethernet function
With Encryption function
120k steps
Without Ethernet function
AFP7CPS31
120k steps
Without Ethernet function
With Encryption function
AFP7CPS31S
64k steps
Without Ethernet function
AFP7CPS21
Remarks
Model number
Remarks
Model number
Remarks
Model number

1.1 System Configuration
1-3
(Note) For details of expansion cables, refer to “4.3 Wiring of Expansion Cable”.

1-4
Overview
1.2 Restrictions on Combinations of Units
1.2.1 CPU Unit Type
Usable functions and combinations of units are limited according to types of CPU units as
follows.
Item
Supported function
CPU type CPS41E CPS31E CPS31 CPS21
Security
enhancement type CPS41ES CPS31ES CPS31S
No
corresponding
model
Program capacity (step) (Note 1) 196k
(51k to 234k)
120k
(32k to 121k)
120k
(32k to 121k)
64k
(32k / 64k)
Data register (word) (Note 1) 262k
(999k to 65k)
131k
(589k to 131k)
131k
(589k to 131k)
131k
(262k / 131k)
Hold area Max. 262k Max. 262k Max. 262k Max. 131k
Maximum number of PBs (Note 1) 392
(468 to 103)
243
(243 to 64)
243
(243 to 64)
128
(128 / 64)
Ethernet function Built-in Built-in Not available Not available
SD memory card Usable Unusable
Logging
Available when SD memory card is mounted.
Not available
Trace Available Available
Standard
COM port
Terminal block 6P 5P
COM0 port Available Available
Terminal block
for GT power
supply
Either 5 V or 24 V can be used. Only 5 V
Combination
of units
Power supply unit Available Not available
Expansion
master
Expansion slave
Available Not available
Other units
Add-on cassettes Available
Battery Option (For clock/calendar) Unsable
Calendar timer Available (When a bettery is installed) Available
(Note 2)
Size of CPU unit alone (Width) 40 mm 34 mm
(Note 1) The program capacity, data registers and maximum number of program blocks (PBs) vary according to the
memory configuration settings. The values in the above table are default values, and values in parentheses are
fluctuation ranges. Select from each setting patterns; Five for CPS41*, Four for CPS31*, Two for CPS21.
(Note 2) The Calendar timer can be activated by supplying the power to the unit for at least 30 minutes for charging
the built-in capacitor even if a no battery is used. (For CPS4*/CPS3*, approx. one week. For CPS21, approx.
two weeks.)

1.2 Restrictions on Combinations of Units
1-5
1.2.2 Common Restrictions on Each Unit
•You can use FP7 series combining the CPU unit with optional input/output units and
intelligent units.
Up to 16 input/output units and intelligent units can be connected.
•Make sure to connect an end unit to the end of the system.
•You can either connect a power supply unit for system driving power, or directly supply
power from an external 24 V DC power supply to the CPU unit. See “1.4 Selection of Power
Supply and Restrictions on Combination“ for restrictions on combination.
•For using an SD memory card, it is recommended to select a connector-type unit as a unit
installed to the right of the CPU unit in order to prevent interference with the wirings of the
unit.
(1) (2) (4)
(3)
(1) Power supply unit (2) CPU unit (3) Unit (4) End unit
1.2.3 Restrictions on the Number of Installed Units
There are following restrictions depending on units to be used.
Unit type Number of installed units Remarks
Power Supply Unit, CPU Unit Max. 1 unit
Serial Communication Unit Max. 8 units

1-6
Overview
1.2.4 Restrictions on the Combination of Extension Cassettes
There are following restrictions depending on units and cassettes to be used.
Unit type
Number of
attachable
cassettes
Attachable add-on cassettes
Communication
cassette
AFP7CCS*
AFP7CCM*
Communication
cassette
AFP7CCET
Application
cassette
AFP7FC*
CPU Unit Max. 1 unit Attachable Attachable Attachable
Serial
Communication
Unit
Max. 2 units per
unit Attachable Not attachable Not attachable
1.2.5 Restrictions on Communication Functions to be Used
There are the following restrictions on functions to be used when using the SCU or ET-LAN
that is built in the CPU unit, or the serial communication unit (SCU).
Function to be used
Restrictions
PLC link function
Up to two communication ports can be used. For using two ports, allocate
different link areas to them.
SCU built-in the CPU unit (COM.1 port)
Serial communication unit (COM.1 port)
MEWTOCOL-COM master
MODBUS-RTU master
A maximum of 16 communication ports and the number of connections in
combination can be used simultaneously.
SCU built-in the CPU unit (COM.1 port to COM. 2 port)
Serial communication unit (COM.1 port to COM.4 port)
ET-LAN built-in the CPU unit (User connections 1 to 16)
MEWTOCOL-COM slave
MEWTOCOL7-COM slave
MODBUS-RTU slave
A maximum of 15 communication ports and the number of connections in
combination can be used simultaneously.
SCU built-in the CPU unit (COM.1 port to COM. 2 port)
Serial communication unit (COM.1 port to COM.4 port)
ET-LAN built-in the CPU unit
(System connections 1 to 4 / User connections 1 to 16)
General-purpose
communication There is no restriction.

1.2 Restrictions on Combinations of Units
1-7
1.2.6 Unit to be Used and Applicable Versions
For using each unit, the following versions of CPU unit and FPWINGR7 are required.
CPU Unit and FPWIN GR7
Unit type
Applicable versions
Remarks
CPU unit FPWINGR7
CPU unit CPS4*/CPS3*
Ver.1 Ver.1.0 or later
Ver.2 or later Ver.2.0 or later
Ver.3.0 or later Ver.2.4 or later
Ver.3.2 or later Ver.2.5 or later
CPS21 Ver.1.0 or later Ver.2.7 or later
(Note 1) As for the CPU units (CPS4*/CPS3*) Ver.2 or later, the firmware of the CPU units can be upgraded with
"FP7 CPU Unit Upgrade Tool". For details, see our web site.
(Note 2) FPWIN GR7 can be upgraded with "FPWIN GR7 Difference file". For details, see our web site.
Intelligent Unit
Unit type
Applicable versions
Remark
s
CPU unit FPWINGR7
CPS4*/CPS3*
CPS21
FP7 High-speed Counter Unit Ver.1.2 or later Ver.1.0 or later Ver.1.2 or later (Note 1)
FP7 Serial Communication Unit Ver.1.2 or later Ver.1.0 or later Ver.1.3 or later
FP7 Communication Cassette
(Ethernet type) Ver.1.3 or later Ver.1.0 or later Ver.1.0 or later (Note 2)
FP7 Analog I/O Cassette, Analog
Input Cassette, Thermocouple Input
Cassette
Ver.2.0 or later Ver.1.0 or later Ver.2.0 or later
FP7 Pulse Output Unit Ver.2.0 or later Ver.1.0 or later Ver.2.0 or later
Thermocouple Multi-analog Input Unit
RTD Input Unit Ver.2.0 or later Ver.1.0 or later Ver.2.3 or later
FP7 Analog Input Unit （AFP7AD8）Ver.3.1 or later Ver.1.0 or later Ver.2.4 or later
FP7 Expansion Master Unit
FP7 Expansion Slave Unit Ver.3.1 or later — Ver.2.4 or later
(Note 1) For using the high-speed counter unit and the positioning unit in combination, and for using the interrupt
function with the high-speed counter unit, the positioning unit Ver.1.1 or later is required.
(Note 2) Configurator WD should be Ver.1.7 or later.

1-8
Overview
1.3 Restrictions on Using Expansion Unit
1.3.1 Configuration When Using Expansion Unit
•In FP series, blocks in which units are combined with the expansion master unit and
expansion slave units can be added.
•From 0 to 16 I/O units and intelligent units can be combined in one block.
•Up to 3 expansion blocks can be connected to one CPU unit.
5
(a)
(b)
(b)
(b)
(1) (3)
(2) (3)
(2)
(2)
(4)
(5)
(5)
(3)
(a) Base block (1) Expansion
master unit (3) Expansion cable
(b) Expansion block (2) Expansion
slave unit (4) Dummy connector (5) Earth wire of expansion cable

1.3 Restrictions on Using Expansion Unit
1-9
1.3.2 Restrictions on Combinations of Units
Combinations of base block
•Install the expansion master unit AFP7EXPM on the left-hand side of the CPU unit.
•Install the power supply unit on the left-hand side of the expansion master unit AFP7EXPM
as necessary.
(1) (2) (3) (4) (5)
(1) Power supply
unit (2) Expansion master unit (3) CPU unit (4) Unit (5) End unit
Combinations of expansion block
•Install the expansion slave unit AFP7EXPS on the left-hand side of the CPU unit.
•Install the power supply unit on the left-hand side of the expansion master unit AFP7EXPM if
used.
(1) (2) (4) (5)
(1) Power supply
unit (2) Expansion slave unit (4) Unit (5) End unit
Base block and expansion block common restrictions
•Make sure to connect the end unit to the right side of the terminal unit.
•As a power supply for driving the system, you can either connect the power supply unit used
at 100 V/230 V AC, or directly supply 24 V DC power to the CPU unit and expansion slave
units. For the restrictions on combinations, refer to “1.4 Selection of Power Supply and
Restrictions on Combination“.

1-10
Overview
1.3.3 Installation Position of Units and Access Time
Restrictions on installation position of units
•There is no restriction on the installation position of each unit in FP7 series. However, the
access time to the units installed in the expansion block is longer than that to the units
installed in the base block as shown in the table below, and it affects the scan time.
•When large-volume data access is assumed with a communication system unit, a unit in
which interrupt occurs or user programs, it is recommended to install the target units in the
base block. It enables to decrease the scan time relatively.
Difference in access time between installation positions of units
Installation
position
Access time
Remarks
Time per word
Ratio to base
block
Base block 0.47 µs/word Even
Expansion
block (Short
distance mode)
2.5 µs/word 5.3 times
The total length of expansion cabels is 9 m or
less.
The LED "SP0" on the expansion master unit
turns on.
Expansion
block (Long
distance mode)
4.1 µs/word 8.7 times
The total length of expansion cabels is 10 m
to 30 m.
The LED "SP1" on the expansion master unit
turns on.
(Note 1) The values in the above table indicate each time which the CPU unit accesses the units installed in each
block via bus in the I/O refresh processing or operation processing. The scan time that an operation processing
time and base time are added can be confirmed in the status display dialog blox of the tool software.
1.3.4 Restrictions on Configuration Capacity
Unit configuration capacity
•If units in which a lot of configuration data are set such as a positioning unit are used in the
expansion block a lot, the configuration capacity may exceed the capacity that the CPU unit
can handle.
•Check the configuration capacity in the I/O map dialog box of the tool software in advance.
•The configuration capacity varies according to the functions and settings used in each unit.
Also, the maximum registration capacity to be assigned depends on the number of installed
expansion units.