Mitsubishi Electric melsec-k User manual

CONTENTS
I
................................................ 3~5
...
......................................................
7-14
2.1 PerformanceSpecifications
................................................... 8
Remote I/O System ........................................................... 9
Local Programmable Controller System ........................................ 11
Number of Link Points
..................................................... 13
I
2.2
2.3
2.4
1 ADD A 8 0 ‘.‘DAD .......................... 15-28
3.1
3.3 K3MCPUP2 Hardware.
..................................................... 17
3.4 KJ71P3andKJ72P5 Hardware
............................................... 19
List of Equipment ......................................................... 16
3.2 System Configuration ...................................................... 16
3.5 KOJ
1 P Hardware .......................................................... 21
3.6 Setting Procedure of IntermittentControl Time
.................................. 23
3.7 IntermittentControl Time
.................................................. 24
3.8 Optical Link Interface
...................................................... 25
3.9 Link Data Flow inOptical Link Loop
........................................... 26
3.10 Concept of Channel Numbers inOptical Link Loop
............................... 27
29-58
.....................................................
4.1 Number of Link Points., ................................................... 30 1
4.2 Numberof I/O Points ...................................................... 30 \
4.3
I
1
PreparingProcedureof Initial Program for Master Channel (K3NCPUP2) ............... 31
Preparatiomof initialprogram
......................................... 31
I
4.3.1
4.3.2
4.3.3
4.3.4
Data Link Method
in Local Programmable Controller System ........................ 35
4.4,1 Specifications of special data registers (D). special temporary memories
(M)
and special functions (F) in optical data link system .......................... 35
4.4.2 Data registers for storingerror channel number
(DA06 to DA09) ................ 36
4.4.3 Programminginstructions
............................................. 37
4.4.4 Programmingmethod of data sending from master to local side
................ 38
4.4.5 Programmingmethodof data sending from local tomaster side
................ 40
4.4.6
4.4.7 Application example of data sending between master and local sides
............ 42
4.4.8 Application circuit example
................. : ......................... 43
.
Preparingprocedures and comparison of initial programs
for local and remote channels
.......................................... 32
I
I
Initialprogram example for remote channel ............................... 33
Example
of remote I/O and local programmablecontroller combination ......... 34
I
.
I
4.4
I
Repeatedcontinuous data sending method between master and local sides ........ 42
I
1
I
..
.
1

4.5 ProcessTime ............................................................. 47
4.5.1 Transmissiondelay time
.............................................. 47
4.5.2
X/Y data flow in remote channels ....................................... 48
4.5.3
X/Y data flow in local channel ........................................ .49
4.5.4
D data flow at thetime of data register write .............................. 50
4.5.5 D data flow
at thetime of data register read ............................... 51
Utilizationof Special Units in Optical Data Link Remote
I/O System ................. 52
4.6.1 Initialprogram when special units are used in optical data linksystem
........... 53
4.6.2 Program example for KA62A
(A/D converter unit) in remote 1/0 system ......... 54
4.6.3 Program example for KA63A (D/A converter unit) in remote
I/O system ......... 56
4.6.4 Program example for KD61 (high-speedcounter unit) in remote
I/O system ...... 57
4.6
5.1 Operation
Start ........................................................... 60
5.2 Operation Stop
........................................................... 61
5.3 Troubleshooting
.......................................................... 62
5.3.1 Troubleshootingchart
................................................ 62
5.3.2 How tofind error location inthe loop
................................... 67
5.3.3 Instantaneouspower failure of programmable controller power
inoptical data linksystem
............................................. 71
5.3.4 Master
test and slave test .............................................. 72
5.3.5 Errors of KJ71P3and KJ72P5
......................................... 74
5.3.6 Errorsof KOJlP
.................................................... 75
CorrectiveActionsfor Master Programmable Controller (K3NCPUP2)
duringTransmission Designation Errors
........................................ 76
ErrorsduringOptical Data Linkof Master ProgrammableController (K3NCPUP2)
....... 81
External Failure Numbers
................................................... 81
Errors of K3NCPU(P2)
..................................................... 82
5.4
5.5
5.6
5.7
............................................. 0 m0 mm ADA 89-90
rn
e '0 Om A D 0 . mm 91 -98
.......................
7.1
7.2
7.3
Cablingbetween Link Units
................................................. 92
Optical Fiber Cable Construction and Standards
.................................. 93
How
to Specify Optical Fiber Cable ........................................... 94
7.3.1
7.3.2 How tospecify optical fiber cablewith connector
.......................... 94
7.4 Cautions for HandlingOptical Fiber Cable
...................................... 95
7.5 Standardsfor Optical Fiber Cable Application
................................... 96
7.6 Cab1ing Plan
............................................................. 98
7.7 Cabling ................................................................. 98
Layingoptical fiber cables without connector
............................... 98
Layingoptical fiber cables with connector
................................ 98
Installation
of connectors ............................................. 98
i
How tospecify optical fiber cable only ................................... 94
7.7.1
7.7.2
7.7.3
2

I I GENERAL DESCRIPTION
1. GENERALDESCRIPTION.. . ....... ..... .. . , .. . .. . .. . .. . . . . . . . . .. . .. .. . 3 - 5

I
I GENERAL DESCRIPTION
The serial data link system permits data communication between plural programmable controllers
and
1/0 units to reduce wiring works of decentralized, long-distance 1/0 equipment, allow de-
Coaxial data linksystem
centralizedcontrol, and increase the total number of input/outputs.
The
MELSEC-K series serial data link system is available in the type which utilizes coaxial cables
or optical fiber cables for the transmission system. This instruction manual explains about the
specifications, installation, programming, and external wiring of the optical data link system which
utilizesoptical fiber cables.
Optical data link system
Mas te r c h a nne1
Local channel
CPU unit K3NCPU
K2CPU-S3 K2HCPU K2NCPU
Link unit KJ71L2
CPU unit
K3NCPU(P2) KZCPU-S3 KZHCPU KZNCPU KO
Link unit KJ71L3 KOD LS
K3NCPUP2 (Link unitincorporated)
3emotechannel
I
CPU unit -
KO
- KOJl P
Link unit KJ72L5 KOD
LS
KJ72P5 -
Base unit 1 Base unitwhich can be used for
CPU unit
I-
t
K12BN, K15BN, K18BN -
K18BE
-
K12BN, K15BN, K18BN
K18BE
Base unit
Base unitwhich can be used for
CPU unit
I-
Number Of I'O
link points
Max. 128 points
Localchannel Max. 51 2 points for fya,218&~~~I
Max. 280 point
Remotechannel I channel for 1 channel
- Max. 480 points intotal for all channels
Data register
link
I I I
Max. 24 points for 1channel Max. 24 points for 1channel
Number of
points
Max. 2048 points
I
I Master channel I Max. 480 points
Used range
Cabl
e
Cable length
DO to95 DO to95
Coaxial cable Optical fiber cable
Overall extension length 500m 2km between channels
I I
Maximumnumber of
slave channels
Communicationmethod Half duplex bitserial Half duplex bitserial
7units
Transmissionprocessing time
(for7 channels
X: 32 points, Y: 32 points)
32 units
24.8ms 6.5ms
Settingof online/offline
Settingof channel number
Communicationspeed
I 250KBPS I 500KB PS
Notprovided Provided
Slide switch on printedcircuit board Digital switch on front
of CPU unit
I
Settingof intermittent
control time Notprovided
P r ov i ded
Automatic reconnection
function
I<
Not provided Selectable by switch
1 I
Table 1.1 Comparison betweenCoaxial Data Link System and Optical Data LinkSystem

[ I GENERAL DESCRIPTION bIEL8E&K
Coaxial data linksystem
Dataflow
Opticaldata linksystem
channel has been
Cable has been
disconnected.
Influence
of failure
When autorn
at ic reconnect i on
is not selected J
After resetting the slave channel or
turning on and then off the power,
reset the master channel or turn off
and then on the power.
Data flow
____)
After resetting the slave channel or
turning on and then off the power,
reset the master channel or turn
off and then on the power.
When automatic reconnection
function
is selected
-
After the link system is restored,
communication
is automatically re-
sumed.
Master
Slave Slave
channel channel channel
b
SI ave
channel
Master channel
Slave
channel
-‘e Slave channel
I
Specific slave channel is disconnected I
from the link system.
Specific
slave channel and slave chan- All channels are disconnected.
nels that follow are disconnectedfrom
the link system.
I
Provide jumper between TXD terminal
and
SG terminal of master channel
and
all slave channels.
Provide means to prevent foreign
material, such
as dust, from
entering the sending and receiving
portions of optical fiber cable and
link unit.
Table 1.1 Comparison between Coaxial Data Link System and Optical Data Link System (Continued)

2 . SPECIFICATIONS
2 . SPECIFICATIONS .................................................... 7-14
Remote 1/0 System ...................................................... 9
Local ProgrammableControllerSystem ...................................... 11
................................................
2.1 PerformanceSpecifications 8
2.2
2.3
2.4
Numberof Link Points .................................................. 13
.
7

2. SPECIFICATIONS IlEL8EbK
I tern
Communicationspeed
2.1 PerformanceSpecifications
Specifications
500 KBPS
Communicationmethod Semi-doublebit
serial (Full double bitserial for master test)
I Synchronouscommunication I Frame synchronization
Transmissioncode
Transmissionformat
~ _____ ~~~
I Transmissionpath I Looptype pollingmethod
~~ ~~
Transparent code
Conforms to HDLC (Frametype)
~ ________
I Max. transmission optical cable length I 2 km maximum betweenchannels
Transmission
loss of optical connector
__
~~
I Number of connectedstations I 33 stations maximum (1master channel, 32 slave channels)
1dB/piece
Transmission
loss of optical fiber cable
Opticalsending
level
Optical receiving level
Operatingambienttemperature
Storage ambient temperature
Operatingambient humidity
Error control method
Less than 3.5 dB/km (ON = 0.85pm)
-25 dBm (peak)
-25 to -37 dBm (peak)
0 to55OC
-10 to75°C
10to90%RH(nodew condensation)
Failsafe function
Disconnectionfunction
Storageambient humidity
CRC (generatingpolynominal: X16
+ X12 + Xs + 1)and
retry by overtime
10to
90%RH (nodew condensation)
When error
is detected, only a correspondingchannel is disconnected
Forceddisconnection
is possibleby switch.
~ ~ ~~ ~~~
I Automatic reconnectionfunction I Selection is possibleby'switch.
OD-9475B(NEC), FOJD-PL1-1-125G(JAE)
I
Opticalconnector
I
Optical fiber cable Core diameter: 50
k 3pm GI (quartz glass)
Claddiameter: 125 f 3pm
Vibration resistance Conformsto Class 3,
I IB, JIS C0911
(16.7
Hz, 3-mmdouble amplitude, 2 hrs.)
~~
Shock resistance
I Operatingambience
Conformsto
JIS C 0912 (10 g x 3 times inX, Y, and 2 directions)
Particularly dust and corrosive
gas should be minimal.
Table
2.1 PerformanceSpecifications
\

[ 2. SPECIFICATIONS IiIELBEBnK
of basic base unit)
--
2.2 Remote 1/0 System
aaster channel
System which allows serial communication of I/O data between master and remotechannels and is
applied in order to reduce wiring work coats
of long distance I/O.
Maximumnumber
of link points
Configuration
CPU unit
t Data link unit
Maximum number
1 of 1/0 points
~
Maximum number
of link units
Number of link
points
Remote
Total numberof
I/O points of
system
Rest ric ti ons
/
Optical data link system (Remote 1/0 system)
-1
,3NCPU P2
Extensioncable
Optical fiber cable
(2 kmbetweenchannels)
E
K3NCPUP2(Optical data link card incorporated)
-
2048 points (A total of 32 channels)
2048 points
- (total of link points)
32 units
Max.
512 points for 1 channel, a total of 2048 points for 32 channels
Max. 2048 points
I
(1) The following special units cannot be loaded intothe remotechannel:
o KN61, KN62, KT61, KD51 E, KJ71L7, KJ71L4, KJ71L2,
KJ7
1 L3, KJ7 1 P3
9

2. SPECIFICATIONS i!"E=K
Concept of
link range
~ ~
Optical data link system (Remote I/O system)
Explanation is made for a system which has 3 remotechannels and 1/0 points as indicated below:
1stchannel
- X: 80 points, Y: 80 points
2nd channel
- X: 64 points, Y: 32 points
3rd channel
- X: 80 points, Y: 112 points
Remote channel
M
7F F
I/O area
of K3NCPUP2
0
I/O unit area of
master channel
Empty
Link area of the 1st channel
X: 80 points, Y: 80 points
Empty
Link area of the 2nd channe
X: 64 points, Y: 32 points
Empty
Link area of the 3rd channe'
X: 80 points, Y : 1 12 points
3rdchannel
/
These areas can be continuedby eliminating
* the empty areas.
I The l/O areas of remote channel indicate the link areas specified by the initial program of
I master channel.
1'
I
10

[ 2. SPECIFICATIONS iEL#EEoK
K3NCPU(P2) K2NCPU K2CPU-S3
2.3 Local ProgrammableControllerSystem
System which allows serial data communication between master and local channels and is applied
inorder to expand the number
of total I/O pointsand perform decentralizedcontrol.
K2HCPU KOJl P
Configuration
(2048points -
32points) -
:numberof I/O points)
(51 2points - 32points) - (num ber of I/Opoints)
Master channe1
1 28 points
Localchannel
CPU unit
Data link unit
Maximum numbei
of link points
Maximum numbel
of
I/O points
CPU unit
Maximum numbei
.of link units
Number
of
link points
Total number
of 1/0 points of
system
Optical data linksystem (Localprogrammablecontroller system)
[=Ion cable -1'
/ I
I K3NCPUP2 ODticalfiber cable
Prog;am mable Programmable
controller CPU controller CPU
I
v
I
'I
A maximum of 32 local channels
-----
Master,channet
K3NCPUP2 (Opticaldata link card incorporated)
2048 points
2048 points
- (total of link points)
32 units
(2048points
- total of link points) + (totalof 1/0 points of local channels)

t
2. SPECIFICATIONS
Concept of link range
Number of 1/0
Points
Optical data linksystem (Local programmablecontroller system)
Explanation is made for a system which has 3 local channels and the number of 1/0
points and the number of X and Y link points as indicated below.
Number of X
Number of Y
Link Points Link Points
1stchannel
2nd channel
224 points 32 points 32 points
256 points 32 points 48 points
I 3rdchannel I 128points I 64 points I 16points I
I,
C
-
7FF
area of
2nd channel
I/O unit area
Empty
Linkarea of the 1st channel
X: 32points, Y: 32points
Empty
Linkarea of the2nd channel
X: 32points, Y: 48points
Empty
Linkarea of the 3rdchannel
X: 64points, Y: 16points
*X and Y link areas of local channels indicate the link
areas specified by the initial program of master channel.
These areas can be continued by eliminating the empty areas.
__3

Ei
[ 2. SPECIFICATIONS
K3NCPUP2
*3
2048
2.4 Number of Link Points
K2NCPU
K3NCPU K2HCPU KOJl
P KJ72P5
K2CPU-S3
*I "2
(2048
- 32) (512 -L 32) 256
I/O points
I/O points Output: 128points
- number of used - number of used Input: 128points 512
Number of
max. link
1/0 points
Numberofmax.
data register
link points 24
i --
- -
24 24 24
I I
Channel Master I
Local Channel
1 RemoteChannel
KOJIP
1 68
I I I I I
I I
Table 2.4 Number of Link Points
*I: When the K3NCPU is used as a local channel, the number of maximum link I/O points is (2048
- 32) - number of used I/O points. However, there is the following restriction as a transfer
1
Used for its own channel without respect to link
I__ Number of exclusively used I/O points of KJ71P3
condition :
--
I.- -
I-- --J
I Maximum link input points = 512 1
' Maximum link output points - 512 '
Even if the number of maximum link points (512 + 512 = 1024) is used for both the input and
output, the expression
of 10241(2048-32) - (numberof used 1/0 points) should be satisfied.
"2: (512 -32) -number
of used I/O points
7-1
Used for its own channel without respect to link
Number of exclusively used
I/O pointsof KJ7 1 P3
"3:The number of maximum link 1/0 points of the K3NCPUP2 is 2048 points. Actually, the
K3NCPUP2 has link images
of 2048 points for input and output, respectively, Le. X = 2048
(XOO to XSFF
) and Y = 2048 (YO0 to Y7FF ).
-
13

MEMO
14

3 . HARDWARE CONFIGURATCO*NAND HANDLING
3 . HARDWARECONFIGURATIONAND HANDLING ........................ 15 - 28
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
3.10
List
of Equipment ...................................................... 16
System Configuration
................................................... 16
K3NCPUP2 Hardware
................................................... 17
KJ71P3 and KJ72P5 Hardware 19
KOJl
P Hardware 21
SettingProcedureof intermittent Control Time
............................... 23
IntermittentControl Time
............................................... 24
Optical Link Interface
................................................... 25
Link Data Flow inOptical Link Loop ....................................... 26
Concept of Channel Numbersin Optical Link
Loop ............................ 27
............................................
El
.......................................................
15 r
_- ......

3. HARDWARE CONFIGURATION AND HANDLING aEl$jEEoK
r
Type
K3NCPUP2
KJ71P3
KJ72P5
KOJl
P
Application Weight (g)
CPU uniton master channelside
Link uniton local programmablecontroller side
Link unit on remote
I/O side
Usable
as local programmablecontroller and remote I/O channel
2300
780
780
1300
3.1 List of Equipment
3.2 System Configuration
The hardwareconfiguration example is shown in Fig. 3.1.
Master channe I
K3NCPUP2
c,
.-
S
3
P
-
cv
a
3
n
u
z
M
Y
Maximum of 2km
distance between 32 inputs/outputs Maximumof
channels exclusively used 32channels
/ /
Opticalfiber
cable(sing1e core)'
loopwiring
AI--------- h
E n
"I
Machinenumber 1 Machinenumber4Nadhine2 number 32
Remote
I/O unit Localprogrammable Remote I/O
'
controller
Fig. 3.1 System ConfigurationExample
0: Load KJ72P5 into the CPU position of basic base unit (K18BE, K18BN, K15BN, K12BN).
(TheKOJI P can also be used as remote VO.)
0: The CPU unit used for local programmable controller is K3NCPU, K2CPU-S3, K2HCPU,
K2NCPU or KOJIP.
0: Load KJ71P3 intodesiredpositionexcept l/O slot, which will be used for link program, and 1/0
slot which is beingused for link program.
16

[ 3. HARDWARE CONFIGURATION AND HANDLING mE[BEBaK
3.3 K3NCPUP2 Hardware
Remove the rear cover before use. Unload the 4th printedcircuit board for optical link. Set the internalslide
switches accordingtothe purpose of use.
Since the printed circuit board is packaged with electronic parts which will be adversely affected by
static electricity, be careful not to directly touch the conductive area and electrical parts when ha-
ndling.
Switch Function
Position
I
For setting intermittent
--- See Section 3.7 (page24).
~ control time
3
4
--- Be sure to keep switches 4, 5 and 6 at OFF position.Switches4,
5 and 6 are used for factory setting test. Therefore, if they are
moved to
ON position, normal operation cannot be performed.
Keep
at OFF position.
(Not used.)
6
OFF tofix intermittent
--- See Section 3.6 (page23).
171 control time I
When a slave channel is disconnectedfrom the link system due to
function automatically reconnects the
slave channelwith the link
system when the error
is remedied or online mode is selected.
- - - error or offline mode selection, the automatic reconnection
reconnection function
Whole system
is automati-
Whole system
is automati-
See Table 3.2 (page 27). Whole system
is not auto-
I maticallyreconnected ON
I ON/OFF

L
3. HARDWARE CONFIGURATION AND HANDLING
CPU
Extension base
CPU
Masterchannel Basic base
Local channel
.
Basic base
Extension base
Remotechannel
Connector for connecting an optical fiber cable.When connectingthe cable, remove the connector cover,
positively insertthe connector of opticalfiber cable, turn
it clockwise, and securely connect it.
0 Be careful not to touch the core at the center of optical connector or not to apply dust to the core.
Unit Name Version Number
K3NCPUP2 505LC and thereafter
K37B, K37BE 505B andthereafter
410B andthereafter
K3NCPU 505FA and thereafter
K3NCPUP2 505LC and thereafter
K2NCPU 504CB and thereafter
K37B, K37BE 505B and thereafter
410B and thereafter
410B and thereafter
K65BN, K68BN, K68BE
K12BN, K15BN, K18BN, K18BE
K65BN, K68BN, K68BE
KOJl
P No relation
0 When the optical fiber cable is notconnected, be sure tomount the connectorcover.
SD (forsending) Be sure to connect the opticalfiber cables from
SD (forsending)to RD (for receiving)'and from
RD (for receiving) RD (for receiving)to SD (forsending).
SD (forsending)
RD (for receiving)
Modesetting digital switch
---
--
Be sure to set the upper 2 digital switches to "00". Factory-setto "00".
Online (Shouldalways be "0" normally)
Offline
(Set when slave channel
is putto master test)
Cannot be set. (Unused)
Mode setting
digital switch
1: OFF LINE
Caution: Setting the mode switch from 0 to 9 and from 0
to 1 gives the same result. Therefore, exercise
special care for the control of mode switch
duringoperation.
Instantaneouspower failure settingselectconnector
0
20 ms instantaneouspower failure is notavailable for productswhich are not indicated inthe above table.
0 When a product not indicated in the above table is included in the system, 20 ms instantaneous power
failure cannot be performed, either. Be sure to
set the instantaneouspower failure settingselect connector
of each unit (units which allow instantaneous power failure such
as K3NCPU(P2) and K2N) tothe Oms
position.
If the connector is set to the 20ms position, output is provided by mistake when the power is
turnedon or off.
18

[ 3. HARDWARE CONFIGURATION AND HANDLING iEl$jEEmK
3.4 K J7 183 and K J72P5 Hardware
CH. NO.
x IO
XI
RESET
MODE
CH.NO.
x 10
XI
MODE
c
0:ON LINE
1 :OFF LINE
2: MASTER TEST
0:ON LINE
1 :OFF LINE
- -
3:SLAVE TEST
L
Before use, set the internalslideswitches accordingtothe purpose of use.
Since the printed circuit board
is packaged with electronic parts which will be adversely affected by
static electricity, be careful not to directly touch the conductive area and electrical parts when hand-
ling.
Function
-See Section 3.7 (page 24).
Forsettingintermittent
control time
141
-Be sure to keep switches 4, 5 and 6 at OFF position.Switches 4,
5 and 6 are used for factory setting test. Therefore, if they are
moved to
ON position, normal operation cannot be performed,
Keep
at OFF position.
(Not used.)
OFF tofix intermittent
171 control time
-See Section 3.6 (page 23).
-When a slave channel is disconnectedfrom the link system due to
error or offline mode selection, the automatic reconnection
function automatically reconnects the
slave channelwith the link
system when the error
is remedied or online mode is selected.
For selectingautomatic
reconnection function
I Slide Switch Number 8 Setting1
Content
I Master ChannelIslave Channel I
1 OFF I OFF
Whole system
is au'tomati-
I cally reconnected
Whole system
is automati-
cally reconnectedexcept
the
set slave channel
-----I4 ON/OFF
See Table 3.2 (page 27).
Whole system is not auto-
matical
I y reconnected
19