Mitsubishi MELSECNET/10 A1SJ72QLP25 User manual

MELSECNET/10
Network Module
User’s Manual
•Hardware•
AJ71QLP21,AJ71QLP21S
AJ71QLR21,AJ71QBR11
Thank you for buying the Mitsubishi general-purpose programmable
logic controller MELSEC-QnA Series
Prior to use, please read both this manual and detailed manual
thoroughly and familiarize yourself with the product.
MODE
LAQ-NET10-M-U-E
MODE
L
CODE
13JR12
SH(NA)-080073-A(9912)MEE
•1999 MITSUBISHI ELECTRIC CORPORATION

A-1
DANGER
CAUTION
!SAFETY PRECAUTIONS !
(Read these precautions before using.)
When using Mitsubishi equipment, thoroughly read this manual and the
associated manuals introduced in this manual. Also pay careful attention to
safety and handle the module properly.
These precautions apply only to Mitsubishi equipment. Refer to the CPU
module user's manual for a description of the PC system safety precautions.
These !SAFETY PRECAUTIONS!classify the safety precautions into two
categories: "DANGER" and "CAUTION".
Procedures which may lead to a dangerous condition and
cause death or serious injury if not carried out properly.
Procedures which may lead to a dangerous condition and
cause superficial to medium injury, or physical damage
only, if not carried out properly.
Depending on circumstances, procedures indicated by CAUTION may also
be linked to serious results.
In any case, it is important to follow the directions for usage.
Store this manual in a safe place so that you can take it out and read it
whenever necessary. Always forward it to the end user.
[INSTALLATION PRECAUTIONS]
CAUTION
!Use the PC in an environment that meets the general specificaitons
contained in this manual. Using this PC in an environment outside the range
of the general specifications could result in electric shock, fire, erroneous
operation, and damage to or deterioration of the product.
!Do not touch the printed circuit board of the module.
It may cause damage or erroneous operation.
!Install so that the pegs on the bottom of the module fit securely into the
base unit peg holes.
Not installing the module correctly or tightening the screws to the terminal
base could result in erroneous operation, damage, or pieces of the product
falling.

A-2
[WIRING PRECAUTIONS]
DANGER
!Completely turn off the external power when installing or placing wiring. Not
completely turning off all power could result in electric shock or damage to
the product.
CAUTION
!When wiring in the PC, be sure that it is done correctly by checking the
product's rated voltage and the terminal layout. Connecting a power supply
that is different from the rating or incorrectly wiring the product could result
in fire or damage.
!Be sure there are no foreign substances such as sawdust or wiring debris
inside the module. Such debris could cause fires, damage, or erroneous
operation.
!Solder the coaxial cable connector properly. Incomplete soldering may
cause a malfunction.
!Tighten terminal screws to the specified torque.
If a terminal screw is not tightened to the specified torque, it the module may
fall out, short circuit, or malfunction.
If a terminal screw is tightened excessively, exceeding the specified torque,
the module may fall out, short circuit, or malfunction due to breakage of the
screw or the module.
!Be sure to fix communication cables or power cables leading from the
module by placing them in the duct or clamping them.
Cables not placed in the duct or without clamping may hang or shift,
allowing them to be accidentally pulled, which may cause a module
malfunction and cable damage.
!When removing the communication cable or power cables from the module,
do not pull the cable. When removing the cable with a connector, hold the
connector on the side that is connected to the module.
When removing the cable connected to the terminal block, first loosen the
screws on the terminal block.
Pulling the cable that is still connected to the module may cause malfunction
or damage to the module or cable.

A-3
Revisions
* The manual number is noted at the lower left of the back cover.
Print Date *Manual Number Revision
Dec.1999 SH(NA)-080073-A First printing
This manual confers no industrial property rights or any rights of any other kind, nor does
it confer any patent licenses. Mitsubishi electric Corporation cannot be held responsible
for any problems involving industrial property rights which may occur as a result of using
the contents noted in this manual.
1999 MITSUBISHI ELECTRIC CORPORATION

A-4
CONTENTS
1. Overview•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 1
2. Performance Specifications ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 2
3. Handling••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 4
3.1 Cable length restrictions between stations •••••••••••••••••••••••••••••••••••••••••••••••••••• 4
4. The Name and Setting of Each Part••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 5
5. Wiring ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 10
5.1 Precautions for Laying Optical Fiber Cables ••••••••••••••••••••••••••••••••••••••••••••••• 11
5.2 Precautions when Installing the Coaxial Cables ••••••••••••••••••••••••••••••••••••••••• 13
5.2.1 For the Coaxial Loop Type•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 13
5.2.2 For the Coaxial Bus Type•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 14
5.2.3 Connecting the Connector for the Coaxial Cables ••••••••••••••••••••••••••••• 16
6. External Dimensions•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 18
6.1 AJ71QLP21(S) •••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 18
6.2 AJ71QLR21 ••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 18
6.3 AJ71QBR11••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 19

A-5
About the Manuals
The following product manuals are available. Please use this table as a
reference to request the appropriate manual as necessary.
Detailed Manual
Manual name Manual No.
(Model code)
For QnA/Q4AR MELSECNET/10 Network System
Reference Manual
IB-66690
(13JF78)
Correspondence to EMC DIRECTIVE
For instructions to make the PLC compatible with EMC standards, refer to
"EMC AND LOW-VOLTAGE DIRECTIVE" in PLC CPU User's Manual
(Hardware).
* When the PLC CPU user's manual (Hardware) does not include Chapter 2
"EMC AND LOW-VOLTAGE DIRECTIVE", refer to QnA Series CPU
Compatible High-Speed Accessing Basic Base Unit-Additional Explanation
for Product Conforming to EMC Standards (IB-68837) (optional).

1
1. Overview
This manual explains the specifications and names of each part, etc., of the
AJ71QLP21(S), AJ71QLR21 and AJ71QBR11 model network module
(abberviated as Network Modules) which are used with MELSECNET/10
network system of the MELSEC-QnA series.
1) The use, cable used and installation position of the Network Modules are
indicated on the following chart.
Cable used
Type Use Optical
fiber cable
Coaxial
cable
Application
AJ71QLP21(S) "-
AJ71QLR21
AJ71QBR11
The control station,
normal station and
master station of
MELSECNET/10
-"
Main base,
Extension base I/O
slot
2) Please verify the existence of the following parts after opening the
package.
a) In the case of AJ71QLP21
Product name Quantity
AJ71QLP21 Network module 1
b) In the case of AJ71QLP21S
Product name Quantity
AJ71QLP21S Network module 1
c) In the case of AJ71QLR21
Product name Quantity
AJ71QLR21 Network module 1
d) In the case of AJ71QBR11
Product name Quantity
AJ71QBR11 Network module 1
F form connector (A6RCON-F) 1
3) When constructing a coaxial bus system, a terminal resistor
(A6RCON-R75) or a BNC-TMP-05 (75) manufactured by Hirose Electric
Corp. is required for both system terminals. It is not included with the
module and must be purchased separately.
4) Application CPU
Q2ACPU(S1), Q3ACPU, Q4ACPU, Q4ARCPU
Q2ASCPU(S1), Q2ASHCPU (S1)

2
2.Performance Specifications
The performance specifications for Network Modules are indicated as follows.
Topic AJ71QLP21(S) AJ71QLR21 AJ71QBR11
X/Y 8192 points
B 8192 points
Maximum link points
per 1 network W 8192 points
When
constructin
gaPC
network
B+Y
8+(2 W) +(2×W) ≤2000 bytes
Maximum
link points
per 1
station
When
constructin
g a remote
I/O network
#Remote master station →remote I/O station
B+Y
8+(2 W) +(2×W) ≤1600 bytes
#Remote I/O station →remote master station
B+X
8+(2 W) +(2×W) ≤1600 bytes
#Remote master station →remote sub master station
Remote sub master station →remote master station
Y+B
8+(2 W) +(2×W) ≤2000 bytes
Communication speed 10Mbps (20Mbps: Multiplex transmission) 10Mbps
Communication method Token ring mode Token pass mode
Synchronous mode Frame synchronous mode
Transmission circuit
format
Double loop (Optical fiber
cable)
Double loop
(Coaxial cable)
Single pass (Coaxial cable)
30km 3C-2V 3C-2V 5C-2V
19.2km (inter
station 300m)
300m
(inter station
300m)
500m
(inter station
500m)
5C-2V
General extension
distance
(Inter station distance)
*1
[
SI cable H type inter station 300m
SI cable L type inter station 500m
QSI cable inter station 1km
]
30km (inter
station 500m)
Repeater module (A6BR10,
A6BR10-DC) Maximum
expansion is 2.5km
Maximum number of
networks
239
Maximum number of
groups
9(OnlyinaPCnetwork)
When
constructin
gaPC
network
64 stations
(Control station: 1 Normal stations: 63)
32 stations
(Control station: 1
Normal stations: 31)
Number of
connection
Stations in
1 network
When
constructin
g a remote
I/O network
65 stations
Remote master station: 1
Remote I/O stations: 64
33 stations
Remote master station:1
Remote I/O stations:32

3
Topic AJ71QLP21(S) AJ71QLR21 AJ71QBR11
Maximum number of
installation modules
per 1 CPU
QnACPU, Q2ASCPU(S1), Q2ASHCPU(S1): 4
Coding mode NRZ1 signal (Non Return to Zero
Inverted)
Manchester signal
Transmission format HDLC performance (frame format)
Error control format Retry by CRC (X16+X12+X5+1) and overtime
RAS function #Loop pack function due to abnormality detection and cable disconnection
(AJ71QLP21(S), AJ71QLR21)
#Diagnostic function for local link circuit check
#Prevention of system down due to shifting to control station (Only for PC
networks)
#Abnormality detection by link special relay, resistor
#Network monitor, each type of diagnostic function
#Transient transmission possible even when there is PC CPU abnormality
(cause of abnormality can be verified from other station)
#Prevention of loopback due to supplying external power (AJ71QLP21S)
Transient
transmission
#N:N intercommunication (Monitor, program upload/download, etc.)
Connection cable Optical fiber cable
SI-200/220,SI-200/250
QSI-185/230
(Arranged by user *2)
3C-2V, 5C-2V Equivalent goods
Integration cable 2-core optical connettor plug
DL-72ME•For SI-200/250•
CA7003 •CA7005 (For SI-200/220
and QSI-185/230)
BNC-P-3-Ni-CAU
BNC-P-5-Ni-CAU
Equivalent goods (manufactured by
DDK Electronics., LTD.
Cable transmission
loss
12dB/km or less 5.5 dB/km or
less
In accordance with JIS C 3501
5VDC Consumption
current (A)
0.65 1.14 0.80
Voltage 20.4 to 31.2VDC
Current 0.20A
Applicable wire
size 0.75 to 2mm2
External supply power
(AJ71QLP21S only)
Tightening
torque
41.1 N#cm
-
Weight (kg) 0.45 (AJ71QLP21S: 0.55)
Input output
occupancy points
32 points
*1: There are restrictions to the distance between stations, being determined according to
the type of cable and number of stations. See sections 5.1, 5.2.1 and 5.2.2.
*2: Specialised training and specific tools are required to connect the connector to the
optical-fiber cable; the connector itself is a custom product. Please contact your nearest
Mitsubishi Electric System Service Corporation when purchasing these items.
For general specifications of the network module, refer to the user's manual for the PLC CPU
that is to be used.

4
3. Handling
[INSTALLATION PRECAUTIONS]
CAUTION
!Use the PC in an environment that meets the general specificaitons
contained in this manual. Using this PC in an environment outside the range
of the general specifications could result in electric shock, fire, erroneous
operation, and damage to or deterioration of the product.
!Do not touch the printed circuit board of the module.
It may cause damage or erroneous operation.
!Install so that the pegs on the bottom of the module fit securely into the
base unit peg holes.
Not installing the module correctly or tightening the screws to the terminal
base could result in erroneous operation, damage, or pieces of the product
falling.
3.1 Cable length restrictions between stations.
1) The main modules case is made of plastic, so do not drop it or subject it to
strong impacts.
2) Do not dismount the printed wiring board from the case. It may damage
the module.
3) When wiring, be careful never to let foreign matter from the above module
such as wiring scraps get inside the module. If something goes in, get rid
of it.
4) The module installation screw should be kept within the following range.
Screw Locations Tightening Torque Range
Module installation screws (M4 screws) 78 to 118N#cm

5
4. The Name and Setting of Each Part
Indicates the name and setting of each part of Network Modules.
IN
{24V
24G
FG
FRONT SIDE
OUT
NETWORK NO.
X100
X10
X1
GROUP NO.
STATION NO.
X10
X1
MODE
0: ONLINE(A.R)
2: OFFLINE
OFF
PC REMOTE
N.ST MNG
PRM D.PRM
STATION SIZE
(8.16.32.64)
LB/LW SIZE
(2.4.6.8K)
OFFON ON SW
1
2
3
4
5
6
7
8
AJ71QLP21S
RUN -
PC -
REMOTE -
DUAL -
SW.E -
M/S.E -
PRM.E -
CRC -
OVER -
AB.IF -
TIME -
DATA -
UNDER -
LOOP -
SD -
RD -
- POWER
- MNG
- S.MNG
- D.LINK
- T.PASS
- EX.POWER
- CPUR/W
- CRC
- OVER
- AB.IF
- TIME
- DATA
- UNDER
- LOOP
- SD
- RD
F. LOOPR.LOOP
10 1
100
E
R
R
O
R
E
R
R
O
R
IN
FRONT SIDE
OUT
NETWORK NO.
X100
X10
X1
GROUP NO.
STATION NO.
X10
X1
MODE
0: ONLINE(A.R)
2: OFFLINE
OFF
PC REMOTE
N.ST MNG
PRM D.PRM
STATION SIZE
(8.16.32.64)
LB/LW SIZE
(2.4.6.8K)
OFFON ON SW
1
2
3
4
5
6
7
8
AJ71QLP21
RUN -
PC -
REMOTE -
DUAL -
SW.E -
M/S.E -
PRM.E -
CRC -
OVER -
AB.IF -
TIME -
DATA -
UNDER -
LOOP -
SD -
RD -
- POWER
- MNG
- S.MNG
- D.LINK
- T.PASS
-
- CPUR/W
- CRC
- OVER
- AB.IF
- TIME
- DATA
- UNDER
- LOOP
- SD
- RD
F. LOOPR.LOOP
10 1
100
E
R
R
O
R
E
R
R
O
R
NETWORK NO.
X100
X10
X1
GROUP NO.
STATION NO.
X10
X1
MODE
0: ONLINE(A.R)
2: OFFLINE
OFF
PC REMOTE
N.ST MNG
PRM D.PRM
STATION SIZE
(8.16.32.64)
LB/LW SIZE
(2.4.6.8K)
OFFON ON SW
1
2
3
4
5
6
7
8
AJ71QBR11
RUN -
PC -
REMOTE -
SW.E -
M/S.E -
PRM.E -
CRC -
OVER -
AB.IF -
TIME -
DATA -
UNDER -
SD -
RD -
- POWER
- MNG
- S.MNG
- D.LINK
- T.PASS
-
- CPUR/W
10 1
100
1)
2)
3)
4)
5)
10)
6)
7)
E
R
R
O
R
NETWORK NO.
X100
X10
X1
GROUP NO.
STATION NO.
X10
X1
MODE
0: ONLINE(A.R)
2: OFFLINE
OFF
PC REMOTE
N.ST/D.S.M MNG/P.S.M
PRM D.PRM
STATION SIZE
(8.16.32.64)
LB/LW SIZE
(2.4.6.8K)
OFFON ON SW
1
2
3
4
5
6
7
8
AJ71QLR21
RUN
PC
REMOTE
DUAL
SW.E
M/S.E
PRM.E
CRC
OVER
AB.IF
TIME
DATA
UNDER
LOOP
SD
RD
POWER
MNG
S.MNG
D.LINK
T.PASS
CPUR/W
CRC
OVER
AB.IF
TIME
DATA
UNDER
LOOP
SD
RD
10 1
100
E
R
R
O
R
F.LOOP R.LOOP
E
R
R
O
R
FRONT SIDE
IN R-SD
F-RD
F-SD
R-RD
OUT
8)
1)
2)
3)
4)
5)
6)
1)
2)
3)
4)
5)
6)
9)
1)
2)
3)
4)
5)
6)
7)

6
No. Name Contents
RUN Module at the normal time: lamp is lit When a WDT error
is generated: lamp is not lit
PC When setting a PC network: the lamp is lit (SW1 is off)
REMOTE When setting a remote I/O: lamp is lit (turns on the SW1)
DUAL During execution of multiplex transmission: lamp is lit
SW.E When there is an abnormality with a switch between 2 and
6: lamp is lit
M/S.E On the same network, at the time of station or control
station duplication: lamp is lit
PRM.E When there is a conformity error with a common
parameter and station existent parameter and when the
parameter received from a sub-management station and
the local station parameter received from the
management station are different: lamp is lit
POWER When the power supply is supplied: lamp is lit
MNG Control station, master station setting time: lamp is lit
Normal station setting time: lamp is not lit
S.MNG When it is sub-management station: lamp is lit
D.LINK During data link: lamp is lit
T.PASS At the time of baton pass (transient transmission): lamp is
lit
EX.
POWER
When the external power supply (24VDC) is being
suppliedtoA:lampislit
CPU R/W During CPU communication exchange: lamp is lit
CRC When there is a code check error of receiving data: lamp
is lit
<Primary cause> The timing of a station in parallel
condition sending data to corresponding station, H/W
abnormality, cable abnormality, noise, etc.
OVER When there is an error due to delayed processing of
receiving data: the lamp is lit
<Primary cause> H/W abnormality, cable abnormality,
noise, etc.
AB.IF Errors when successively receiving communication which
is "1" above the regulations and or when the length of the
receiving data is short: lamp is lit
<Primary causes> The timing of a station in parallel
condition sending data to the corresponding station,
monitoring time is short, cable is abnormal, noise, etc.
TIME An error at the time that the data link timer is working:
lamp is lit
<Primary causes> Monitoring time is short, cable
abnormality, noise, etc.
DATA Error when receiving abnormal data which is 2K bytes or
over: lamp is lit.
<Primary causes> Cable abnormality, noise, etc.
UNDER An error when the internal processing of the sending
transmission data is not in constant intervals: lamp is lit
<Primary causes> H/W abnormality
LOOP If there is an error when the Forward (F. Loop)/Reverse
(R.LOOP) loop is abnormal: lamp is lit
<Primary cause> The power supply of the adjacent station
is off, the cable is cut or not connected, etc.
SD During data sending: lamp is lit
1) LED
AJ71QLP21S
RUN -
PC -
REMOTE -
DUAL -
SW.E -
M/S.E -
PRM.E -
CRC -
OVER -
AB.IF -
TIME -
DATA -
UNDER -
LOOP -
SD -
RD -
- POWER
- MNG
- S.MNG
- D.LINK
- T.PASS
- EX.POWER
- CPUR/W
- CRC
- OVER
- AB.IF
- TIME
- DATA
- UNDER
- LOOP
- SD
- RD
F. LOOPR.LOOP
10 1
100
E
R
R
O
R
E
R
R
O
R
AJ71QLP21
RUN -
PC -
REMOTE -
DUAL -
SW.E -
M/S.E -
PRM.E -
CRC -
OVER -
AB.IF -
TIME -
DATA -
UNDER -
LOOP -
SD -
RD -
- POWER
- MNG
- S.MNG
- D.LINK
- T.PASS
-
- CPUR/W
- CRC
- OVER
- AB.IF
- TIME
- DATA
- UNDER
- LOOP
- SD
- RD
F. LOOPR.LOOP
10 1
100
E
R
R
O
R
E
R
R
O
R
AJ71QBR11
RUN -
PC -
REMOTE -
SW.E -
M/S.E -
PRM.E -
CRC -
OVER -
AB.IF -
TIME -
DATA -
UNDER -
SD -
RD -
- POWER
- MNG
- S.MNG
- D.LINK
- T.PASS
-
- CPUR/W
10 1
100
E
R
R
O
R
AJ71QBR11
RUN
PC
REMOTE
DUAL
SW.E
M/S.E
PRM.E
CRC
OVER
AB.IF
TIME
DATA
UNDER
LOOP
SD
RD
POWER
MNG
S.MNG
D.LINK
T.PASS
CPUR/W
CRC
OVER
AB.IF
TIME
DATA
UNDER
LOOP
SD
RD
10 1
100
E
R
R
O
R
F.LOOP R.LOOP
E
R
R
O
R
RD During data receiving: lamp is lit

7
No. Name Contents
2)
*2
Network number
setting switch
3
2
0
5
9
4
8
7
6
1
3
2
0
5
9
4
8
7
6
1
3
2
0
5
9
4
8
7
6
1
NETWORK
NO.
X100
X10
X1
the third
digit
the second
digit
the first
digit
Network number setting (factory setting at time of shipping: 1)
<Setting range>
1 to 239 :Network number
Other than 1 to 239 :Setting error (SW.E LED lamp is lit) Becomes
off-line condition
3)
*2
Group number setting
Switch
3
2
0
5
9
4
8
7
6
1
GR.NO.
Network number setting (factory setting at time of shipping: 1)
<Setting range>
1 to 239 : Network number
Other than 1 to 239 : Setting error (SW.E LED lamp is lit) Becomes
off-line condition
Station number setting (factory setting at time of shipping: 1)
Type Setting
PC network 1 to 64 :station number
Other than 1 to 64 :setting error (SW.E led light is
lit)
4)
*2
Station number
setting switch
3
2
0
5
9
4
8
7
6
1
3
2
0
5
9
4
8
7
6
1
ST.NO.
X10
X1
the second
dight
the first
dight
Remote I/O
network
0 :remote master station
1 to 64 :remote sub master station
Other than 1 to 64 :setting error (SW.E LED light is
lit)

8
No. Name Contents
Mode setting (factory setting at time of shipping: 0)
Mode Name Contents
0 On-line (automatic
double line existent)
Data link
(automatic double line existent)
1 Use not possible -
2 Off-line Placing local station in parallel condition
3 Forward loop Data link system
Check of all forward loop side circuits is
executed.
4 Reverse loop Data link system
Check of all reverse loop side circuits is
executed.
5 Test between
stations (master
stations)
6 Test between
stations (sub master
stations)
By the mode which checks circuits
between 2 stations, execute the check
of the one which has a smaller number
as the master station and the other as
the sub master station.
7 Self back to back test By the module simplex, check the
hardware including the sending and
receiving communication circuit of the
transmission system and the cable.
8 Internal self back to
back test
By the unit simplex, check the hardware
including the sending and receiving
communication circuit of the
transmission system.
9 Hardware test Check the internal hardware of the
network module.
5)
*2
Mode setting switch
3
2
0
5
9
4
8
7
6
1
MODE
MODE
0:FOML TIME(A,R)
2:FOFFLINE
Ato
F
Use prohibited (Do not set the mode.)
Operation condition setting
(factory setting at the time of shipping: all off)
SW Contents OFF ON
1 Network type PC Network Remote I/O network
2 Station type Normal station/ Multiple
sub master
Control station/ parallel
sub masters
3Use
parameters
Parameters in common Default Parameters
4 Number of
stations OFF ON OFF ON
5[Valid when
SW3 is ON ]OFF
8
stati
ons OFF
16
statio
ns ON
32
statio
ns ON
64
stati
ons
6 B/W number of
general point OFF ON OFF ON
7[Valid when
SW3 is ON ]OFF
2k
point
sOFF
4k
statio
ns ON
6k
point
sON
8k
stati
ons
6)
*2
Conditions setting
switch
SW
1
2
3
4
5
6
7
8
OFF
PC
N.ST
PRM
ON
REM.
MNG
D.PRM
ST,SIZE
8,16,32,64
LB/LW SIZE
2,4,6,8k
OFF ON SW
1
2
3
4
5
6
7
8
*3
*4
8 Use prohibited
(always off)

9
No. Name Contents
7) Connector
(AJ71QLP21(S))
Connect the optical fiber cable.
IN
Reverse
(R)
SD
Forward
(F)
RD
OUT
Forward
(F)
SD
Reverse
(R)
RD
Front
Optical
fiber cable
8) Connector
(AJ71QLR21)
Connect the coaxial type cable.
IN
SDRD
OUT
SDRD
Front
Coaxial
Cable
Forward
(F)
Reverse
(R)
Forward
(F)
Reverse
(R)
9) Connector
(AJ71QBR11)
Connect the F type connector.
F type connecto
r
10) External power source
supply terminal
EXT.PW
+24V
24G
FG
When preventing loop pack by turning OFF the power source of the
PLC CPU, supply an external power source.
+24V
24G
FG
+
-
*1: EXT.PW LED light by the power supply for the network generated with an external power
supply(24VDC). There fore, please note that an external power supply might be input
when LED is turned off.
*2: When it is desired to change the setting while the PLC CPU’s power supply is ON, reset
the PLC CPU (move the RUN/STOP key switch away from RESET to a position other
than RESET).
*3: When using by the remote I/O network, it becomes valid for station numbers 1 to 64.
*4: Valid in the case of PC network management station.

10
5. Wired
DANGER
!Completely turn off the external power when installing or placing wiring. Not
completely turning off all power could result in electric shock or damage to
the product.
CAUTION
!When wiring in the PC, be sure that it is done correctly by checking the
product's rated voltage and the terminal layout. Connecting a power supply
that is different from the rating or incorrectly wiring the product could result
in fire or damage.
!Be sure there are no foreign substances such as sawdust or wiring debris
inside the module. Such debris could cause fires, damage, or erroneous
operation.
!Solder the coaxial cable connector properly. Incomplete soldering may
cause a malfunction.
!Tighten terminal screws to the specified torque.
If a terminal screw is not tightened to the specified torque, it the module may
fall out, short circuit, or malfunction.
If a terminal screw is tightened excessively, exceeding the specified torque,
the module may fall out, short circuit, or malfunction due to breakage of the
screw or the module.
!Be sure to fix communication cables or power cables leading from the
module by placing them in the duct or clamping them.
Cables not placed in the duct or without clamping may hang or shift,
allowing them to be accidentally pulled, which may cause a module
malfunction and cable damage.
!When removing the communication cable or power cables from the module,
do not pull the cable. When removing the cable with a connector, hold the
connector on the side that is connected to the module.
When removing the cable connected to the terminal block, first loosen the
screws on the terminal block.
Pulling the cable that is still connected to the module may cause malfunction
or damage to the module or cable.

11
5.1 Precautions for Laying Optical Fiber Cables
1) The distance between stations varies depending on the type of optical
fiber cable used.
Type Distance between stations (m)
L type 500 (1640.5 ft.)SI type optical fiber cable
(Old type: A-2P-$)H type 300 (984.3 ft.)
SI type optical fiber cable 500 (1640.5 ft.)
SI (H-PGF) type optical fiber cable 1000 (3281 ft.)
QSI type optical fiber cable 1000 (3281 ft.)
2) When connecting an optical fiber cable, the following restrictions on the
bending radius must be observed.
Cable type Allowable bending radius Connector A [mm (in.)]
Type φ2.8mm area [mm (in.)] CA9003 CA7003 CA7005 DL-72ME
A------50 (1.97)
B 85 (3.35)
C 85 (3.35)
SI (old)
D
50
140 (5.51)
45 (1.77) ------ ------ ------
A------50 (1.97)
B 60 (2.36)
C 60 (2.36)
SI
D
50
110 (4.33)
------30 (1.18) ------ ------
A------45 (1.77)
B 45 100 (3.94)
SI
(H-PCF)
D 50 100 (3.94)
------ ------ ------35 (1.38)
A------50 (1.97)
B 60 (2.36)
C 60 (2.36)
QSI
D
50
140 (5.51)
------30 (1.18) 30 (1.18) ------
(Type) A: Indoor use standard B: Indoor use reinforced
C: Outdoor use standard D: Outdoor use reinforced
r
A
Module front

12
3) The optical fiber cable is wired in the following manner.
There is no problem even if not wiring in order of the station number.
There is no problem even if station how many become control station.
Control station
AJ71
QLP21
(S)
Station number 1
AJ71
QLP21
(S)
AJ71
QLP21
(S)
IN IN INOUT OUT
OUT
Normal station
Station number 2
Normal station
Station number 3
4) When laying the optical fiber cable, do not touch the fiber core of the cable
connector or module connector, or let dirt or dust collect on it.
If oil from the hands, dirt or dust should adhere to the core, the
transmission loss will increase, causing a malfunction in the data link.
5) When attaching or detaching the optical-fiber cable to/from the module,
hold the cable connector securely with the hands.
6) Connect the cable connector and module connector securely until you
hear a "click" sound.
7) Please wire IN/OUT of the connector for the cable correctly.
Please do loopback test, the set confirmation test, and the bureau order
confirmation test after wiring.
It might be generated that a baton abnormal passing cannot be generated
when miswiring and the downed bureau which cannot do the loop back of
an arbitrary bureau do the row again even by the reclosing of the power
supply.

13
5.2 Precautions when Installing the Coaxial Cables
5.2.1 For the Coaxial Loop Type
1) The distance between station is different depending on the kind of the
coaxial cable used.
Type Distance between stations (m) Total extension distance (km)
3C-2V 300 (984.3ft.) 19.2 (62995.2ft.)
5C-2V 500 (1640.5ft.) 30 (98430ft.)
2) When connecting a coaxial cable, the following restrictions on the bending
radius must be observed.
Cable type
Allowable
bending radius
r[mm(in.)]
Connector
A[mm(in.)]
3C-2V 23 (0.91)
5C-2V 30 (1.18) 35 (1.38)
r
Module front
A
3) The Coaxial cable is wired in the following manner.
There is no problem even if not wiring in order of the station number.
There is no problem even if station how many become control station.
AJ71QLR21
INOUT
F-SD R-SD
R-RD F-RD
AJ71QLR21
IN
OUT
F-SD R-SD
R-RD F-RD
AJ71QLR21
INOUT
F-SD R-SD
R-RD F-RD
Control station
Station number 1
Normal station
Station number 2
Normal station
Station number 3
4) Install the coaxial cables at least 100 mm (3.94 in.) away from other power
cables and control cables.
5) Consider wiring using double-shielded coaxial cable in places that are
subject to large amounts of noise.
Double shielded coaxial cable
Mitsubishi Cable...5C-2V-CCY
Grounding

14
6) Do not pull any of the connected cables.
This will cause a faulty contact, cable disconnection, or damage to the
module.
7) Please wire SD/RD of the connector for the cable correctly.
Please do loopback test, the set confirmation test, and the bureau order
confirmation test after wiring.
It might be generated that a baton abnormal passing cannot be generated
when miswiring and the downed bureau which cannot do the loop back of
an arbitrary bureau do the row again even by the reclosing of the power
supply.
5.2.2 For the Coaxial Bus Type
1) Between stations, use the cable length indicated in the table below
according to the number of stations connected.
There is the possibility of communication errors if the cable length other
than the table listed below is used.
Number of stations
connected Cable length between stations Total extension distance
2to9stations 1 to 300 m (3C-2V) (3.28 to 984.3 ft.)
1 to 500 m (5C-2V) (3.28 to 1640.5 ft.)
10 to 33 stations
1 to 5 m (3C-2V, 5C-2V) (3.28 to 16.41 ft.)
13 to 17 m (3C-2V, 5C-2V) (42.65 to 55.78 ft.)
25 to 300 m (3C-2V) (82.03 to 984.3 ft.)
25 to 500 m (5C-2V) (82.03 to 164.5 ft.)
300 m (984.3 ft.)
(3C-2V)
500 m (1640.5 ft.)
(5C-2V)
2) If there is the possibility of an increase in the number of stations due to
system expansion, install the cables with advance consideration of the
restrictions.
3) When using a repeater module (models A6BR10 or A6BR10-DC), use the
station-to-station cable length indicated by "10 to 33" stations, regardless
of the number of stations connected or the number of repeater modules.
4) When connecting a coaxial cable, the following restrictions on the bending
radius must be observed.
Cable type Allowable bending radius
r [mm (in.)]
Connector
A [mm (in.)]
3C-2V 23 (0.91)
5C-2V 30 (1.18) 50 (1.97)
A
r
Module front