CompoBus/S SI unit
PRODUCT NAME
EX12※-SCS1/SCS2 Series
MODEL/ Series
EX##-OMC0002-A
CONTENTS
Forward..............................................................................................................................................3
1.Directions ........................................................................................................................................3
2.Characteristics and System Structure.............................................................................................4
2-1.Characteristics ......................................................................................................................4
2-2.System structure...................................................................................................................5
3.Applicable PLC ...............................................................................................................................6
4.Specifications..................................................................................................................................7
4-1.SI unit specifications .............................................................................................................7
4-2. CompoBus/S systemspecifications......................................................................................8
4-3.External form of SI unit .........................................................................................................9
4-4.How to order SI unit ............................................................................................................11
5.Name and effect of each part of unit.............................................................................................12
5-1.LED Indication ....................................................................................................................12
5-2.Name of the terminal boad .................................................................................................12
6.Switch setting................................................................................................................................13
6-1.Address setting ...................................................................................................................13
6-2.Hold/Clear setting ...............................................................................................................15
7.Wiring............................................................................................................................................15
7-1.Wiring of communication line..............................................................................................15
7-2.Termination resistance .......................................................................................................17
7-3.Communication cable .........................................................................................................17
7-4.Wiring of power...................................................................................................................18
8.SI unit output no. and solenoid valve coil......................................................................................19
8-1.Standard wiring...................................................................................................................19
8-2.Made-to order wiring(mixed wiring) ...................................................................................20
9.Troubleshooting ............................................................................................................................21
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Forward
●
Indication and meaning of directions
1.Directions
Warning
z
This product is intended to be used to the general FA equipment. The use of this product should be avoided for the equipment and device that human life may be directly injured and malfunction or failure may cause enormous loss.
This product should no be disassembled and remodeled. z
Caution：
Operator error could result in injury or equipment damage.
Warning：
Operator error could result in serious injury or loss of life.
(Note) : Explanations of related matters
Caution
z z z
Read this operation manual thoroughly and use the product within the range of specifications, observing the directions strictly.
Make sure if this product and all the equipment connected with this product are turned off when wiring or inspecting.
Don't touch the terminal and internal circuit boards while they are energized.
Tighten wires securely with terminal screws. z
-3-
2.Characteristics and System Structure
2-1.Characteristics z CompoBus / S system
Serial transmission system in which master and slave etc. are connected together by one cable thanks to OMRON Corp. PLC
( programmable logic controller ) SYSMAC Series and CompoBus / S master unit. z SI manifold solenoid valve for CompoBus /S
Manifold solenoid valve with the remote Output unit (SI unit) connectable to
CompoBus /S system. The occupying output point of SI unit is 16 or 8 points. z Control many solenoid valves by one serial transmission cable
Since SMC's SI unit transmits directly from master unit, wiring manpower can be reduced. z High-speed communication cycle time
The max. of 32 slaves , 256 ( IN 128/OUT 128 ) IN/OUT put are connected in the high-speed communication cycle time of 1 ms or less. z Highly free system is built by T branch style and multi-drop style.
Wiring can be composed freely by T branch style and multi-drop style.
The length of the trunk line can be extended to 100m maximun. z Greatly reduced maintenance
The signal wiring will become one serial transmission cable, which will decrease much of the maintenance at the time of trouble like wrong, disconnection, etc. and increase credibility.
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2-2.System structure
CompoBus/S master unit
OMRON Corp. PLC
Communication
power
Ｔ
-branch
Multi drop
Supply power for
solenoid valve
SI unit SI unit
Special flat cable
OMRON Corp.
Remote I/O terminal
Sensor terminal, etc.
SMC Corp.
SI manifold solenoid valve
Termination resistance
-5-
3.
Applicable PLC
This SI unit is connected to the CompoBus/S system of OMRON Corp.
CompoBus/S has the following applicable PLC and master unit.
Applicable PLC C200HX/HG/HE, C200HS CQM1
Applicable master unit C200HW - SRM21 CQM1 - SRM21
Max. IN/OUT put point per master
IN128/OUT128 point or
IN64/OUT64 point
CQM1-CPU11/21:
IN32/OUT32 point or
IN16/OUT32 point
CQM1-CPU41/42/43/44:
IN64/OUT64 point or
IN32/OUT32 point or
IN16/OUT16 point
No. of the max. connection
SI unit per master when using EX12
∗-SCS1
(16 points output):
8 or 4 units when using EX12
∗-SCS2
(8 points output) :
16 or 8 units
EX12
∗-SCS1 (16 points output):
4, 2 or 1 unit
EX12
∗-SCS2 (8 points output) :
8, 4 or 2 units
∗: 0, 1 or 2 or 4D or 4U
(Note)
Number of max. IN/OUT put points and max. connection SI unit are decided by setting the dip switch for setting the no. of max. connection slave of master unit.
Please refer to OMRON Corp. CompoBus/ S user's manual, etc. for details about PLC and master unit.
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4.Specifications
4-1.SI unit specifications
Items
Types of SI unit
Operating ambient temperature
Operating ambient humidity
Storage ambient temperature
Vibration resistance
Impact resistance
Noise resistance
Dielectric strength
Insulating resistance
Operating atmosphere
Occupied output point
Output style
Connection load
Residual voltage
Communication power voltage
Supply power voltage for solenoid valve
Current consumption
Weight
Specifications
EX120/121/122/
EX124U/D - SCS1
EX120/121/122/
EX124U/D - SCS2
0 to 55
o
C
35 to 85% RH (without condensation )
- 20 to + 65 o
C
49 m/s
2
98 m/s
2
±1000 Vp - p pulse width 1µs , leading 1 ns pulse between the full external terminal and case: 1500 VAC for 1 minute between the full external terminal and case: 500 VDC
2MΩ or more without corrosive gas nor dust
16 points 8 points transistor style (NPN open collector style )
24 VDC, solenoid valve with lamp - surge voltage protection circuit of 2.1 W or less, SMC product
0.4 V or less
14 to 26.4 VDC
24 VDC + 10%/-5%
Communication power 0.1 A or less 24 VDC
EX120: 110 g or less
EX121: 140 g or less
EX122: 130 g or less
EX124U/D: 240 g or less
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4-2.CompoBus / S system specifications
Items
Applicable PLC
Communication style
Communication speed
Modulation style
Symbol style
Specifications
OMRON Corp. C200HX/HG/HE, C200HS, CQM1
Protocol for CompoBus/S
750 k bit/s base band style
Manchester symbol style
Error control
Connection style
Manchester symbol check, frame length check, parity check
T branch style, multi drop style
Distance
Type of cable trunk line length branch line length full length of branch line when using
VCTF cable
100 m or less
3 m or less 50 m or less when using the special flat cable
30 m or less 3 m or less 30 m or less
But if the no. of slave connection is 16 or less even when using the special flat cable, the length of trunk line can be 100 m or less and full length of branch line 50 m or less.
Max. IN/OUT put point
Type of master when using the C200HW - SRM21
Max. IN/OUT put points
IN128/OUT128 point or
IN 64/OUT 64 point when using the CQM1 - SRM21
IN 64/OUT 64 point or
IN 32/OUT 32 point or
IN 16/OUT 16 point
(Note)
Please refer to OMRON Corp. CompoBus/ S user's manual, etc. for details.
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4-3.External form of SI unit
(1)External form of EX120 - SCS1 and 2
(2)External form of EX121 - SCS1 and 2
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(3)External form of EX122 - SCS1 and 2
(4)External form of EX124D/U - SCS1 and 2
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4-4.How to order SI unit
ＥＸ１２０−ＳＣＳ１
Type of SI unit Occupying output point
20 vertical type, VQ direct mounting 1 16 points
21 vertical type, DIN rail mounting 2 8 points
22 vertical type, SY/SX direct mounting
Applicable PLC maker
CS OMRON Corp. CompoBus / S
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5.Name and effect of each part of unit
5-1.LED Indication
EX120-SCS*
EX121-SCS*
EX122-SCS*
LED
PWR
COMM
ERR
Contents
Light is on or off as the power supply for communication is on or off respectively.
EX124U-SCS*
EX124D-SCS*
Light is on during normal communication and off in error or stand-by mode.
Light is on when communication error occurs and off in normal condition stand-by mode.
5-2.Name of the terminal board
dip switch for setting
PWR COMM ERR
１
０
ADDRESS No.
Terminal
BS+
BDH
BDL
BS -
24V
0V
Where to connect
BS+ communication power line
BDH communication line
BDL communication line
BS- communication power line
24 V for solenoid valves power
0 V for solenoid valves power terminal board
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6.Switch Setting
The switch of SI unit should be set while the power is off.
6-1.Address setting
（１） ADDRESS NO. (node address)
The node address setting range depends on the type or setting of the master as follows:-
•For master unit C200HX/HG/HE, C200HS
If max. number of connected slaves is 16 (IN8/OUT8), the node address setting range is 0 to 7.
If max. number of connected slaves is 32 (IN16/OUT16), the node address setting range is 0 to 15
•For master unit CQM1:
The number of channels occupied by the PLC or master unit and the number of points occupied by one node address, are related as follows:
Number of CH occupied by PLC
Number of points occupied by one node address
Setting range
Max. number of connected slaves
IN2
OUT2
IN4
OUT4
IN8
OUT8
IN4
OUT4
IN8
OUT8
IN16
OUT16
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0
1
2
3
4
5
6
7
(Note)
•The duplication of a node address in different slaves will cause communication error.
•For 16 point slaves which are assigned to one channel. although it occupies 2 slaves with 8 points, the node address which is not used must be as follow:-
If the node address used is odd: Node address with no. just before must also be used.
If the node address used is even: Node address with no. just after must also be used.
For example, if the node address 5 is set to a 16 points SI unit(a kind of slave), the node address
4 must also be used for the SI unit.
•For master unit CQM1, if 8 points slave is connected in 4 points mode.
The slave is considered to occupy points for 2 slaves, and the node address just after the set node address to the slave must also be used.
If the node address is duplicated with another slave, communication error occurs and makes it impossible to start communication with CompoBus/S.
• During 4 points mode, 16 points slave is not available.
（２） Switch setting
Open the terminal board cover on the upper section of SI unit and set the DIP switch.
1
0
ON
1 2 3
4 5 6
OFF node address
Hold ／ Clear
•Setting of node address
Set the node address with SW 1 to 4 as follows: 0: OFF, 1: ON node address SW1 SW2 SW3 SW4 node address SW1 SW2 SW3 SW4
0
1
0
1
0
1
0
1
0
0
1
1
0
0
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
8
9
10
11
12
13
14
15
0
1
0
1
0
1
0
1
0
0
1
1
0
0
1
1
1
1
1
1
0
0
0
0
1
1
1
1
1
1
1
1
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6-2.Hold/Clear setting
This setting is intended to determine whether output of SI unit should be held or cleared totally when communication error occurs.
In SW5, setting is available as follows. 0: OFF 1: ON
Hold/Clear setting SW5
Clear 0
Hold 1
(Note)
Switch SW6 must remain off in use.
7.Wiring
7-1.Wiring of communication line
Connecting style of the CompoBus/S slave has 2 types: T branch style and multi-drop style.
In the T branch style, slave is connected with branch line that branched off from the trunk line.
In the multi-drop style, slave is connected directly with the trunk line. But branch line cannot be branched off from the branch line. When branch line is branched off from the trunk line, special pressure welding connector for branch or terminal board is used. When communication able is connected with SI unit, BDH and BDL communication lines are connected with BDH and
BDL terminals respectively. Communication power BS+ and BS- lines are also connected to BS+ and BS- terminals respectively.
Master unit
ＢＤＨ
ＢＤＬ
Pressure welding connector for branch
Termination
resistance
Stabilized
power
BS+
Special flat cable
BS- FG 24V 0V
Insulation treatment
BS+ BDH
BDL BSFG 24V 0V
SI unit
Ground stabilized power
SI unit
Ground
Stabilized
power
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This SI unit is multi power supply type slave.It has 2 supplying sections for communication and solenoid valve.It's possible to supply power to the supplying section for communication by the special flat cable.But another power is needed at the supplying section for solenoid valve.Also, the power can be supplied from the supply power for solenoid valve to communication power supplying section.
The communication line of special flat cable is as follows: communication power + side (BS+), brown communication line High side (BDH), black communication line Low side (BDL), white communication power - side (BS-), blue
Caution
The communication cable should be wired away from the power cable and high voltage cable in order not to be affected by noise, etc.
Cable should be connected without mistake. If it is wired wrongly, SI unit and other devices may be damaged.
-16-
7-2.Termination resistance
The termination resistance should be mounted at the end of trunk line on the opposite side of the master in order to stabilize the communication. The following OMRON Corp. 's products should be used for the termination resistance. z
SRS1-T terminal with the termination resistance usable for VCTF and special flat cable z
SCN1-TH4T pressure welding connector with the termination resistance
usable only for the special cable
When the communication cable is connected to the terminal base with termination resistance, it is necessary to connect both BDH and BDL to an appropriate terminal.
If the network is connected in T branch style, it is necessary to connect a termination resistance to the end of the longest branch cable, so that the termination resistance is positioned at the furthest point from the master.
7-3.Communication cable
Type
VCTF Cable
Compobus flat cable
SCA1-4F10 (length 100m)
Specifications
Vinyl cable VCTF JIS C 3306
2-cores, Nominal section 0.75 mm
2
(Signal line×2)
Conductor resistance (at 20℃): 25.1Ω/km
Nominal section 0.75 mm
2
×4
(Signal line×2, Power line×2)
Ambient temp.: 60℃ or less.
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7-4.Wiring of power
This SI unit is multi-power supply type slave. There are 2 supplying sections: for communication and for solenoid valve.
（１） Power supply for communication
• If VCTF cable is used for the communication, the power must be supplied for the SI unit by a separate cable.
• If Compobus flat cable is used for the communication, the power is supplied for the
SI unit by the flat cable.
（２） Power supply for solenoid valve
• Power supply 24 VDC, +10% -5% is required.
• The power supply and cables used should be selected with consideration to the current consumption of the solenoid valves and of the SI unit.
( Note)
The separate power supply should have margin in its capacity enough for in-rush current at start up.
Caution
When using the Compobus flat cable for communication, any unused power supply cables must be isolated at both ends.
-18-
8.SI unit output no. and solenoid valve coil
8-1.Standard wiring
The output of SI unit is allotted in order from the D-side solenoid valve. In the case of VQ manifold solenoid valve, SI unit will be attached at the D-side, and so output will be 0, 1, 2 … from the side of SI unit. In the case of SX, SY manifold solenoid valve, the mounting direction of SI unit is on the side of D and U. Therefore, if SI unit is mounted on the U-side, the output number will be allotted in order from the solenoid valve on the opposite side of SI unit.
When the number of station of VQ, SX manifold solenoid valve is 8 or less, the wiring inside the manifold will all be double wiring. SY manifold solenoid valve will be all single wiring.
[ e.g. of wiring 1: VQ manifold solenoid valve ] [ e.g. of wiring 2: SX manifold solenoid valve (U-side)]
Ｕ
Ｕ
９ ・・
・
Ｂ
Ａ
７ ・・
・
５
・
・・ evacuated
Ａ evacuated
Ａ double single single
３ ・・
・
Ｂ
Ａ
１ ・・
・
Ｂ
Ａ double double
SI unit output no.
SI unit
５
４
３
２
１ stations
Ｄ
SI unit output no.
SI unit
９
・・
・
Ｂ
Ａ
７
・・
・ evacuated
Ａ
５
・・
・ evacuated
Ａ
３
・・
・
Ｂ
Ａ
１
・・
・
Ｂ
Ａ double single single double double stations
５
４
３
２
１
Ｄ
In the e.g. of wiring shown above, the 3 rd
,4 th
single can be changed to double. In this case, the output no. of the 3 rd
solenoid valve on the B side will be 5, the output no. of 4 th
solenoid valve on the B side will be 7.
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8-2.Made-to order wiring ( mixed wiring )
The mixed wiring can be done as the made-to-order wiring. Specify the wiring specifications by the manifold specifications, when the solenoid valve stations are 9~16 or when continuous output will be allotted to the single solenoid valve with VQ, SX manifold solenoid valve stations of 8 or less.
[ e.g. of wiring: VQ manifold solenoid valve ]
15 ・・
Ａ
14 ・・
Ａ
２
・・
Ａ
１
・・
・
Ｂ
Ａ
SI unit output no.
single
single
single
double
SI unit
15
14
２
１ stations
Ｕ
Ｄ
It is fixed depending on whether the solenoid valve carrying the manifold inside wiring is single or double.
In this case, please note that it's impossible to output since the inside wiring is not done to the B side of solenoid even if the solenoid valve is changed from single to double. The max. station of the single solenoid valve is 8 and 16 respectively when SI unit output point is 8 and 16.
(Reference)
For mixed wiring, the wiring specifications should be written clearly in the manifold specifications.
-20-
9.Troubleshooting
The following flow chart shows directions to solve the malfunction when SI unit doesn't operate normally. Refer to OMRON Corp. CompoBus/S user manual, etc. for the entire trouble shooting.
The solenoid valve
doesn't operate.
Is the
LED of solenoid valve
lighting up?
NO
Is PWR LED lighting up?
YES
Is COMM LED lighting up?
NO
Check the ERR LED indication, setting of PLC and program, wiring, etc.
Refer to the OMRON, Corp.
User's Manual, etc. for details.
If the communication trouble isn't solved nevertheless, please contact SMC.
YES
NO
YES
YES
Please contact SMC.
YES
Is the communication power supplied?
Is the node address set correctly?
YES
Is the supply power for solenoid valve
(DC24V) supplied?
NO
NO
NO
Supply the communication power.
Set the node address correctly.
Supply the supply
power (DC24V) for
solenoid valve.
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