2-2 Units. Omron C200HG-CPU43, C200HX-CPU64, C200HX-CPU65, C200HG-CPU53, C200HG-CPU33, C200HX-CPU34, C200HG-CPU63, C200HE-CPU32, C200HW-PA204S
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Units Section 2-2
2-1-3 I/O Connecting Cable
The first Expansion I/O Rack is connected to the CPU Rack, and the second and third Expansion I/O Racks are connected to the previous Expansion I/O Rack through I/O Connecting Cable. There are five different lengths of cable available, which can be used as desired to provide the desired distance between each Rack. The sum of the lengths of all the I/O Connecting Cables connected within one PC, however, but be 12 m or less.
Model
C200H-CN311
C200H-CN711
C200H-CN221
C200H-CN521
C200H-CN131
Cable length
30 cm
70 cm
2 m
5 m
10 m
2-2 Units
2-2-1 CPU Units
The following diagram shows the components of the CPU Unit as viewed from the front cover. The numbers in the diagram correspond to the numbers of the following items in the description.
6. Communications Board compartment
1. Indicators
2.
Memory Casette compartment
3. DIP Switch
4. Peripheral port
5. RS-232C port
14
Units Section 2-2
1, 2, 3...
1.
Indicators
The indicators (LEDs) on the front cover of the CPU Unit operate as described in the following table.
LED
RUN (green)
ERR (red)
INH (orange)
COMM (orange)
Contents
Lights when the PC is operating normally in MONITOR or RUN mode.
Flashes if an error occurs that does not stop the CPU
Unit (a non-fatal error).
Lights if an error occurs that stops the CPU Unit (a fatal error). If a fatal error occurs, the RUN indicator will turn
OFF and the outputs from all Output Units will turn OFF.
Lights when the Load OFF Bit (SR 25215) turns ON. If the Load OFF Bit is turned ON, the outputs from all
Output Units will turn OFF.
Lights when the CPU Unit is communicating via the peripheral or RS-232C port.
2.
Memory Casette Compartment
The Memory Cassette compartment contains the built-in RAM and can be used to mount an optional Memory Cassette. Refer to 3-1-8 Mounting
Memory Cassettes for the mounting methods.
15
Units Section 2-2
3.
DIP Switch
The DIP switch is used to make various settings that determine who the PC will operate. The C200HX/C200HG/C200HE CPU Unit has a 6-pin DIP switch, as shown in the following diagram. The settings of these pins are listed in the following table.
Pin no.
Setting
1 ON
2
OFF
ON
3
OFF
ON
OFF
4
5
6
ON
OFF
ON
OFF
ON
OFF
Function
Writing disabled for user memory.
Writing enabled for user memory.
Contents of the Memory Cassette automatically read when power is turned on.
Contents of the Memory Cassette not automatically read when power is turned on.
Programming Console messages displayed in English.
Programming Console messages displayed in the language stored in system ROM. (Messages displayed in Japanese with the Japanese version of system ROM.)
Setting function for special instructions enabled.
Setting function for special instructions disabled (default).
Standard communications parameters (see note) will be set for the following serial communications ports.
• Built-in RS-232C port
• Peripheral port (only when a CQM1-CIF01/-CIF02 Cable is connected. Does not apply to Programming Console.)
Note 1. Standard communications parameters are as follows:
Serial communications mode: Host Link or peripheral bus; start bits: 1; data length: 7 bits; parity: even; stop bits: 2; baud rate: 9,600 bps
2. The CX-Programmer running on a personal computer can be connected to the peripheral port via the peripheral bus using the above standard communications parameters.
The communications parameters for the following serial communications ports will be set in PC
Setup as follows:
• Built-in RS-232C port: DM 6645 and DM 6646
•
Peripheral port: DM 6650 and DM 6651
Note When the CX-Programmer is connected to the peripheral port with the peripheral bus, either set bits 00 to 03 of DM 6650 to 0 Hex (for standard parameters), or set bits 12 to 15 of DM 6650 to 0
Hex and bits 00 to 03 of DM 6650 to 1 Hex (for Host Link or peripheral bus) separately.
Expansion TERMINAL mode for the Programming Console; AR 0712: ON
Console mode for the Programming Console; AR 0712: OFF
Note All pins are set to OFF for the factory defaults.
4.
Peripheral Port
The peripheral port is connected to peripheral devices, such as the Programming Console.
5.
RS-232C Port
The RS-232C port is connected to external devices that support an
RS-232C interface, such as personal computers.
6.
Communications Board Compartment
The Communications Board compartment is used to mount a Communica-
16
Units Section 2-2 tions Board. Refer to 3-1-9 Mounting a Communications Board for the mounting methods.
2-2-2 Memory Cassettes
Memory Cassettes can be optionally mounted to increase memory capacity over just the built-in RAM. There are two types of Memory Cassette available.
These are shown in the following diagram.
EEPROM Memory Cassette EPROM Memory Cassette
Notch
C200HW-ME
EEPROM Memory Cassette When an EEPROM Memory Cassette is installed in the CPU Unit, the user memory (UM) and I/O data can be directly read and written. There is no need for a backup power supply. The Memory Cassette can also be removed from the
CPU Unit and used for storing data.
Model
C200HW-ME04K
C200HW-ME08K
C200HW-ME16K
C200HW-ME32K
C200HW-ME64K
Capacity
4K words
8K words
16K words
32K words
64K words
Note The C200HW-ME64K can be used with the C200HX-CPU65-ZE/CPU85-ZE
CPU Units only. It cannot be used with other CPU Units.
EPROM Memory Cassette With an EPROM Memory Cassette, the program is written using a PROM Writer.
The ROM is mounted to the Memory Casette and then installed in the CPU Unit.
I/O data cannot be stored.
Model
C200HS-MP16K
Capacity
16K words/32K words
Memory Cassette Settings
EEPROM Memory Cassette Set the DIP switch. For an EEPROM Memory Cassette, set pin no. 1 (write protect) to either ON or OFF. Setting it to ON will protect the program in the memory from being overwritten. Setting it to OFF will allow the program to be overwritten.
(The factory setting is OFF.)
EPROM Memory Cassette For an EPROM Memory Cassette, set pin no. 1 (ROM Type Selector) according to the type of ROM that is mounted.
Pin no. 1
OFF
ON
ROM type
27256
27512
Model
ROM-JD-B
ROM-KD-B
Capacity
16K words
32K words
Access speed
150 ns
150 ns
17
Units Section 2-2
2-2-3 Communications Boards
An optional Communications Board can be mounted in the CPU Unit to provide communications with the following types of devices/systems through the communications port: SYSMAC LINK Systems, SYSMAC NET Systems, personal computers, Programmable Terminals (PTs), bar code readers, temperature controllers, devices with RS-232C or RS-422 interfaces, etc.
The following Communications Boards are available.
C200HW-COM01 C200HW-COM02-V1 C200HW-COM03-V1
Indicators Indicators
Bus
Connecting
Unit connector
Port A
(RS-232C)
Port A
(RS-422/
RS-485)
C200HW-COM04-EV1
Indicators
C200HW-COM05-EV1
Indicators
C200HW-COM06-EV1
Indicators
Bus
Connecting
Unit connector
Port A
(RS-232C)
Port B
(RS-232C)
Port A
(RS-232C)
Port B
(RS-232C)
Port A
(RS-422/
RS-485)
Model
C200HW-COM01
C200HW-COM02-V1
C200HW-COM03-V1
C200HW-COM04-EV1
C200HW-COM05-EV1
C200HW-COM06-EV1
Specifications
Connection port for SYSMAC LINK, SYSMAC NET, or other Communications Units.
RS-232C port x 1
RS-422/485 port x 1
Connection port for SYSMAC LINK, SYSMAC NET, or other Communications Units.
RS-232C port x 1 (supports protocol macros)
RS-232C port x 2 (supports protocol macros)
RS-422/485 port x 1 (supports protocol macros)
RS-232C port x 1 (supports protocol macros)
18
Units Section 2-2
Indicators (LEDs)
Note Use either the C200HW-COM01 or a V1 Communications Board for the ZE-version C200HX/HG/HE CPU Units.
The Communications Board indicators on the front panel of the CPU Unit indicate the status of the Board, as described in the following table.
Indicator Color
RDY Green
COMB
COMA
Status
Not lit
Flashing
Lit
Orange Flashing
Orange Flashing
Meaning
The Board cannot be used due to a hardware error on the Board.
A setting error has been discovered in the PC
Setup or the protocol data.
The Board is operating properly and communications are possible.
Communications are in progress with the device connected to port B.
Communications are in progress with the device connected to port A.
2-2-4 Power Supply Units
Power Supply Units provide power to the CPU Rack and the Expansion I/O
Racks. Power Supply Units are available for either AC or DC power input. The numbers in the diagram correspond to the numbers of the following items in the description. (The following diagram shows the C200HW-PA204S.)
Part Names and Functions
1. POWER indicator
L
2
/N
100 to 120 VAC/
200 to 240 VAC
L
1
100 to 120
200 to 240
+24 VDC 0.8 A
2.
Terminals for external connections
Note The AC input terminals may
L
2
/N be indicated as L
1
/N and L
2 instead of L
2
/N and L
1
on some Units. However, there
L
1 is no difference in their functions or performance.
L
1
/N
L
2
1, 2, 3...
1.
POWER Indicator
The POWER indicator will be lit whenever the Power Supply Unit is outputting 5 V.
19
Units Section 2-2
2.
Terminals for External Connections
These terminals are connected as shown in the diagram below. The numbers in the diagram correspond to the numbers of the following items in the description.
RUN output Model Supply voltage
100 to
120 VAC or
Output capacity
5 VDC, 4.6 A,
30 W
Output terminals
Without Without C200HW-PA204
240 VAC
(Select the
24 VDC,
0.8 A
Without C200HW-PA204S the metal
Without With C200HW-PA204R the voltage selector terminals.)
24 VDC
5 VDC, 9 A,
45 W
Without
5 VDC, 4.6 A,
30 W
Without
With
Without
C200HW-PA209R
C200HW-PD024
20
Units
Terminal Connections
Section 2-2
C200HW-PA204: AC Input
1. AC Input
2.
Voltage selector terminals
C200HW-PA204S: AC Input
L
2
/N
100 to 120 VAC/
200 to 240 VAC
Input
L
1
100 to 120
Close
200 to 240
Open
1. AC Input
2.
Voltage selector terminals
L
2
/N
100 to 120 VAC/
200 to 240 VAC
Input
L
1
100 to 120
Close
200 to 240
Open
3. LG
4. GR
3. LG
4. GR
5. 24 VDC output
24 VDC 0.8 A
Output
1. AC Input
C200HW-PA204R: AC Input
2.
Voltage selector terminals
C200HW-PA209R: DC Input
L
2
/N
100 to 120 VAC/
200 to 240 VAC
Input
L
1
100 to 120
Close
200 to 240
Open
1. AC Input
2.
Voltage selector terminals
L
2
/N
100 to 120 VAC/
200 to 240 VAC
Input
L
1
100 to 120
Close
200 to 240
Open
3. LG
4. GR
7. RUN output
3. LG
4. GR
RUN OUTPUT
250 VAC
24 VDC
2 A
7. RUN output
RUN OUTPUT
240 VAC
24 VDC
2 A Resistive
C200HW-PD024: DC Input
6. DC Input
24 VDC
3. LG
4. GR
1, 2, 3...
1.
AC Input (C200HW-PA20 jj Only)
Supply either 100 to 120 VAC or 200 to 240 VAC to the AC input terminals. If one power supply phase of the equipment is grounded, connect the grounded phase side to the L
2
/N (or L
1
/N if so indicated) terminal.
2.
Voltage Selector Terminals (C200HW-PA20 jj Only)
Short these terminals with a metal short bar when 100 to 120 VAC is being supplied to the AC input terminals.
3.
LG
Ground the LG terminal to 100 Ω or less to increase resistance to noise and protect against possible electrical shock.
21
Units Section 2-2
4.
GR
Ground the GR terminal to 100
Ω
or less to protect against possible electrical shock.
5.
24 VDC Output (C200HW-PA204S Only)
The 24 VDC output terminals can be used to supply power to DC Input Units.
The combined power consumption for both 5 V and 24 V must be 30 W or less.
6.
DC Input (C200HW-PD024 Only)
Supply 24 VDC to the DC input terminals.
7.
RUN Output (C200HW-PA204R/PA209R Only)
The internal contact will turn ON when the CPU Unit is operating in RUN or
MONITOR mode. These terminals are available only on the C200HW-
PA204R.
22
Units
Restrictions for the
C200HW-PA204R/PA209R
Section 2-2
Use the C200HW-PA204R/PA209R Power Supply Unit only with the following
CPU Units and Backplanes. CPU Units and Backplanes with manufacturing numbers earlier than the ones given cannot be used.
CPU Units
Model
C200HX-CPU65-E
C200HX-CPU54-E
C200HX-CPU44-E
C200HX-CPU34-E
C200HG-CPU63-E
C200HG-CPU53-E
C200HG-CPU43-E
C200HG-CPU33-E
C200HE-CPU42-E
C200HE-CPU32-E
C200HE-CPU11-E
C200HX/HG/HE-
CPU jj -ZE
Manufacturing number (See below.)
Made in Japan
20Z6 or later
2817 or later
19Z6 or later
Made in the Netherlands
0147 or later
2417 or later
25Z6 or later
0817 or later
19Z6 or later
1017or later
20Z6 or later
19Z6 or later
20Z6 or later
All models
Backplanes (with C200HW-PA204R)
Model
C200HW-BC031
C200HW-BC051
C200HW-BC081
C200HW-BC101
Manufacturing number (See below.)
Made in Japan
0617 or later
19Z6 or later
24Z6 or later
Made in the Netherlands
0147 or later
20Z6 or later
Backplanes (with C200HW-PA209R)
CPU Backplanes
C200HW-BC031 Same
I/O Backplanes
C200HW-BI031 Same
C200HW-BC051 number as for
C200HW-PA204R.
C200HW-BC081-V1 (-V1 or later)
C200HW-BC101-V1 (-V1 or later)
C200HW-BI051 number as for
C200HW-PA204R.
C200HW-BI081-V1 (-V1 or later)
C200HW-BI101-V1 (-V1 or later)
!
Caution When using the C200HW-PA209R Power Supply Unit, be sure to use only the
Backplanes listed in the above table. Using a different Backplane may result in malfunction due to deterioration of the base or pattern burnout.
Note Manufacturing numbers are as shown in the following diagram.
j j j j
Year (Ex. 1997 = 7)
Month (1 to 9 = Jan to Sep, X/Y/Z = Oct/Nov/Dec
Day (01 to 31)
23
Units
2-2-5 Backplanes
CPU Backplane
Section 2-2
There are two types of Backplane: the CPU Backplane, used for the CPU Rack, and the I/O Backplane, used for Expansion I/O Racks. The Backplane serves to hold and connect the following types of Unit: the CPU Unit, the Power Supply
Unit, I/O Units, Special I/O Units, etc.
The components of the Backplanes are shown in the following diagrams and described following them. The numbers in the diagram correspond to the numbers of the following items in the description.
4. Unit mounting slots
1.
Backplane mounting screw
I/O Backplane
2.
Power Supply
Unit connector
6. Unit lock levers
7. I/O Connecting Cable connector
5. Unit connector connector
4. Unit mounting slots
1.
Backplane mounting screw
2.
Power Supply
Unit connector
6. Unit lock levers 5. Unit connector
7. I/O Connecting Cable connector
1, 2, 3...
1.
Backplane Mounting Screws
Mount the Backplane firmly using four M4 screws.
2.
Power Supply Unit Connector
Connect the Power Supply Unit.
3.
CPU Unit Connector
Connect the CPU Unit.
4.
Unit Mounting Slots
Mount one Unit to each slot. There are 3, 5, 8, or 10 slots available on the
Backplane depending on the model of Backplane used.
5.
Unit Connectors
Connect I/O Units, Special I/O Units, Interrupt Input Units, and/or Analog
Timer Units.
Note Attach a C500-COV01 Connector Cover to any slot that is not being used to prevent dust and dirt from entering the unused connectors.
6.
Unit Lock Levers
The lock levers hold the Units in place. Press down on the level and pull up on the Unit to release the lock.
7.
I/O Connecting Cable Connector
Connect the I/O Cable from the CPU Rack to the first Expansion I/O Rack or between adjacent Expansion I/O Racks to this connector.
24
Units Section 2-2
2-2-6 Standard I/O Units
The following Standard I/O Units are available.
Input Units
Name
AC Input Unit
AC/DC Input Unit
Model number
C200H-ID211 12 to 24 VDC
C200H-ID212
C200H-IA121
24 VDC
100 to 120 VAC
C200H-IA122/IA122V 100 to 120 VAC
C200H-IA221 200 to 240 VAC
C200H-IA222/IA222V 200 to 240 VAC
C200H-IM211
C200H-IM212
12 to 24 VAC/DC
24 VAC/DC
Specifications No. of points
8 pts
16 pts
8 pts
16 pts
8 pts
16 pts
8 pts
16 pts
Note The C200H-ID001/002 cannot be used on the following Backplanes: C200HW-
BC jj 1/BI jj 1.
Output Units
Name Model number
Contact Output Unit C200H-OC221
C200H-OC222
C200H-OC225
C200H-OC223
Triac Output Unit
C200H-OC224
C200H-OC222V
C200H-OC226
C200H-OC224V
C200H-OD411
C200H-OD211
C200H-OD212
C200H-OD213
C200H-OD214
C200H-OD216
C200H-OD217
C200H-OD21A
C200H-OA221
C200H-OA222V
C200H-OA223
C200H-OA224
Specifications
2 A, 250 VAC/24 VDC (For resistive loads)
2 A, 250 VAC/24 VDC (For resistive loads)
2 A, 250 VAC/24 VAC (For resistive loads)
No. of points
8 pts
12 pts
16 pts
5 pts 2 A, 250 VAC/24 VDC (For resistive loads)
Independent commons
2 A, 250 VAC/24 VDC (For resistive loads)
Independent commons
2 A, 250 VAC/24 VDC (For resistive loads)
2 A, 250 VAC/24 VDC (For resistive loads)
2 A, 250 VAC/24 VDC (For resistive loads)
Independent commons
1 A, 12 to 48 VDC
8 pts
12 pts
16 pts
8 pts
0.3 A, 24 VDC
0.3 A, 24 VDC
2.1 A, 24 VDC
8 pts
12 pts
16 pts
8 pts
0.8 A, 24 VDC; source type (PNP); with load short protection 8 pts
5 to 24 VDC; source type (PNP) 8 pts
5 to 24 VDC; source type (PNP) 12 pts
1.0 A, 24 VDC; source type (PNP); with load short protection 16 pts
1 A, 250 VAC 8 pts
0.3 A, 250 VAC
1.2 A, 250 VAC
0.5 A, 250 VAC
12 pts
8 pts
12 pts
Optional Products
The following optional products are available for use with Standard I/O Units.
• I/O Unit Cover: C200H-COV11
Cover for 10-pin terminal block.
• Space Unit: C200H-SP001
Used for vacant slots.
25
Units Section 2-2
Components
The Standard I/O Units come in three shapes; A-shape, B-shape, and E-shape.
Refer to Appendix D Specifications for the dimensions of each Unit. The numbers in the diagram correspond to the numbers of the following items in the description.
A-shape I/O Unit (10-terminal Terminal Block) B-shape I/O Unit (19-terminal Terminal Block)
1. I/O Unit lock notch
2. Nameplate
3. I/O indicators:
Indicate ON/OFF status of points
4. 10-terminal terminal block
4. 19-terminal terminal block
E-shape I/O Unit (10-terminal Terminal Block)
I/O Unit lock notch
Nameplate
I/O indicators
Indicate ON/OFF status of points
10-terminal terminal block
Note The C200H-OC226 is an extended B-shape I/O Unit and its dimensions are different from those of the B-shape I/O Unit shown above.
26
Units Section 2-2
1, 2, 3...
1.
I/O Unit Lock Notch
The lock notch fits into the Backplane to hold the Unit in place.
2.
Nameplate
The nameplate shows the model number of the I/O Unit.
3.
I/O Indicators (LEDs)
The indicators show the ON/OFF status of the I/O points. The arrangement of the indicators varies with the model of I/O Unit, as shown in the following tables.
4.
Terminal Block
The terminal block is used to wiring I/O. There terminals blocks are removable and consist of two parts.
Units with 10-terminal
Terminal Blocks
Appearance Unit type
8-point Units
Model numbers
ID211, IM211, IA121,
IA221, OC221, and
OA216
8-point Units
F: Fuse burnt out
(with LED)
OD213, OD411, OA221, and OA223
8-point Units
ALARM indictors
(with LEDs)
OD214
5-point Units OD223
Units with 19-terminal
Terminal Blocks
Appearance Unit type
16-point Units
12-point Units
8-point Units
Model numbers
ID212, IA122, IA122V,
IA222, IA222V, IM212,
OC225, OC226, OD212, and OD21A
OC222, OC222V, OD211,
OD217, OA222V, and
OA224
OC224 and OC224V
2-2-7 Group-2 High-density I/O Units
Group-2 High-density I/O Units come in two varieties; C-shape and D-shape.
The shape of the two varieties is the same, but C-shape Units have only one connector, while the D-shape Units have two. C-shape Units have 32 I/O points and
D-shape Units have 64 I/O points.
Group-2 High-density I/O Units can be used with C200H-CPU21/22/23/31 CPU
Racks and Expansion I/O Racks. They cannot be used with Slave Racks.
27
Units Section 2-2
C-shape Units (32-point Units)
Unit
DC Input Unit
Specifications
12 VDC; 64 pts
24 VDC; 32 pts
24 VDC; 64 pts
Transistor Output Unit 4.5 VDC,16 mA to
26.4 VDC,100 mA; 32 pts
4.5 VDC,16 mA to
26.4 VDC,100 mA; 64 pts
C
D
24 VDC, 0.5 A (5A/Unit); 32 pts C
Shape
D
C
D
Model
C200H-ID111
C200H-ID217
C200H-ID218
C200H-ID216
C200H-ID219
C200H-OD218
C200H-OD219
C200H-OD21B
1. I/O Unit lock notch
2. Nameplate
3. I/O indicators
4. I/O number setting switch
5. 40-pin connector
D-shape Units (64-point Units)
1. I/O Unit lock notch
2. Nameplate
3. I/O indicators LED
4. I/O number setting switch
6. Indicator switch
5. 40-pin connectors
28
Units Section 2-2
I/O Indicators
Units with One 40-pin
Connector
1, 2, 3...
1.
I/O Unit Lock Notch
The lock notch fits into the Backplane to hold the Unit in place.
2.
Nameplate
The nameplate shows the model number of the I/O Unit.
3.
I/O Indicators (LED )
The indicators show the ON/OFF status of the I/O points. The arrangement of the indicators varies with the model of I/O Unit, as shown in the following tables.
4.
I/O Number Setting Switch
This switch is used to set the I/O number for the Unit. Set the number to between 0 and F for Units with one 40-pin connector and to between 0 and 8 or A and E for Units with two 40-pin connectors.
5.
40-pin Connectors
The number of connectors depends on the Unit.
6.
Indicator Switch
Determines whether the status of connector 1 or connector 2 I/O points are shown on the I/O indicators.
Appearance Unit type
32 points Unit
Model numbers
ID216 and ID218
Units with Two 40-pin
Connectors
32 points Unit
F: Fuse burnt out
(with LED)
OD218 and OD21B
Appearance Unit type
64 points Unit
Model numbers
ID111, ID217, and ID219
64 points Unit
F: Fuse burnt out
(with LED)
OD219
29
Units Section 2-2
2-2-8 High-density I/O Units Classified as Special I/O Units
Some High-density I/O Units are classified as Special I/O Units. Up to 10 or up to
16 Special I/O Units can be connected to a PC depending on the CPU Unit that is used. These Units have two 24-pin connectors. In general, these Units control
32 I/O points, although some Units can control 128 I/O points when set for dynamic operation.
Refer to Appendix B Specifications for detailed specifications and dimensions of the Units.
TTL Input Unit
DC Input Unit
TTL Output Unit
Unit
Transistor Output Unit
TTL I/O Unit
Model Number
C200H-ID501
C200H-ID215
C200H-OD501
C200H-OD215
C200H-MD501
C200H-MD115
C200H-MD215
Specifications
5 VDC, 32 inputs
24 VDC; 32 inputs
5 VDC, 32 outputs
24 VDC; 32 outputs
5 VDC, 16 inputs, 16 outputs
12 VDC; 16 inputs, 16 outputs
24 VDC; 16 inputs, 16 outputs
1. I/O Unit lock notch
2. Nameplate
3. I/O indicators LED
4. Unit number setting switch
5. 24-pin connectors
1, 2, 3...
1.
I/O Unit Lock Notch
The lock notch fits into the Backplane to hold the Unit in place.
2.
Nameplate
The nameplate shows the model number of the Unit.
3.
I/O Indicators (LED )
The indicators show the ON/OFF status of the I/O points.
4.
Unit Number Setting Switch
Turn OFF the power supply to the PC and set the unit number to between 0 and F using a flat-blade screwdriver, being careful not to damage the slot or leave the switch set half-way between two settings.
5.
24-pin Connectors
There are two 24-pin connectors.
30

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