Toshiba RS-485 User manual

1
PROGRAMMABLE CONTROLLER
PROSEC T1
RS232C/RS485
MULTI-DROP ADAPTER
CU111
n USER’S MANUAL
T1 connection cable
T1 side connector
Type identification
Status LEDs
RS485 Terminal block

2
Precaution and Checks
Thank you for purchasing a TOSHIBA product.
Please confirm the product has arrived in good condition and use it according to this guide.
This guide has been prepared for users who have general knowledge of the programmable
controllers and control systems. If any parts of this guide are not clear to you,contact
TOSHIBA agent.
1. Use the multi-drop adapter in the environment specified in the T1 user's
manual. Using the multi-drop adapter in the illegal environment may lead to
electric shock,fire,failure,or malfunction.
2. Neither disassemble nor modify the multi-drop adapter. Otherwise, it may get
fired,failed,or malfunctioned.
3. The multi-drop adapter CU111 is designed for the T1. Do not use it for other
purposes.
4. Turn off the power of the T1 main unit before connecting the cable.
5. Do not pull the T1 connection cable without grasping the connector. It can
cause cable disconnection.
6. Do not extend the T1 connection cable.
nUnpacking confirmation
Check the product matches the type notation on the packing case.
Also, check the followings are in the packing case.
Multi-drop adapter (CU111) 1
Metal fitting for screw 1
Terminal block (attached) 1
Guide (this document) 1
nProduct identification
Product type : CU111
Part number : TCU111**S
nHandling precautions
The multi-drop adapter specification confirm to the T1 main unit.
Please read the following documents.
T1 USER’S GUIDE (UG-TS07***-E007)
T1 USER’S MANUAL - Basic Hardware and Function - (UM-TS01***-E001)
T1 USER’S MANUAL - Option Cards and I/O Modules - (UM-TS01***-E002)
T1 USER’S MANUAL - Computer Link Function - (UM-TS01***-E003)
Also, keep this guide and related manuals so that you can read them anytime while the T1
is in operation.
CAUTION

3
CU111 Specifications
1.Overview
Connecting the RS232C/RS485 multi-drop adapter (CU111) to the T1’s programmer port, you
can use the RS485 computer link function.
By this function, long-distance and one -to- N communications become available.
2.Specifications
(1)Function specification
Item Specification
Connection RS232C DIN - 8pin (T1 programmer port connector)
RS485 Removable terminal block 6pin
Length of T1 connection cable 30cm
Status LEDs 3 (Refer to the following table)
Isolation Non isolation between RS232C and RS485
Power Supply 5Vdc from T1 main unit
Current consumption 75mA
Size 30mm(W) ×90mm(H) ×75mm(D) (except cable)
(2)Transmission specification
Item Specification
Interface Conforms to RS232C (T1 side)
Conforms to RS485 (Host side)
Transmission distance 30cm (between T1 and adapter)
Max. 1km (RS485 )
Transmission speed 9600 bps
Framing Start bit 1bit (Fixed)
Dta bit 8bits (Fixed)
Parity Odd parity/ Non (automatic detection)
Stop bit 1bit (Fixed)
Number of stations Max. 32
(3)RS485 transmission cable
Shieled twisted cable which conforms to the RS485, should be used for communication
cable. It’s recommended that 0.9mm diameter or more, 3 pairs or more cables are used.
(4)Operation Status LEDs
Name Direction LED Status
(color) Lit Not Lit
POWER
(green) 5V power is normal and connected to T1 5V power is not normal.
RXD
(green) Host →T1 Data receiving (RXD = 0) Data not receiving (RXD = 1)
TXD
(green) T1 →Host Data transmitting (TXD = 0) Data not transmitting (TXD = 1)

4
CU111 Installation
3.Installation
1.Installing the adapter
Either DIN rail or screw mounting is available.
The length of the T1 connection cable is 30cm. Consider the cable length when installing
the multi-drop adapter.
Please read the installation section of the T1 user’s manual.
Mounting
Adapter
DINrail bracket
(Screw mounting)
Attach the metal fittings for screw to the DIN rail bracket and screw securely using the M3
screws.
2.Connecting the dedicated cable
Turn off the power of the T1 main unit. Connect the T1 side connector to the T1’s
programmer port and RS485 cables to the terminal block.
Do not connect or remove the cables while power to the T1 is on.
(Mounting on a DIN rail)
(1)Hang the adapter on the DIN rail at first.
Next, push the adapter and hook the
DIN rail.
(2)Please check that the DIN rail bracket
hooks the DIN rail. DIN rail
(35mm)
30mm
23mm
adapter
2-M3
15mm
fitting for screw
95mm 90mm
T1 CU111
Programmer
port
Terminal block
RS485
T1 dedicated cable

5
CU111 Configuration
4.System configuration example
PROSEC
T1
TOSHIBA MDR16
OUT
IN
PROSEC
T1
TOSHIBA MDR16
OUT
IN
PROSEC
T1
TOSHIBA MDR16
OUT
IN
……………………
5.Circuit configuration
RS485
Gate
Controller
Supervisor of
Power Suplly
R
TXARX1
TXBCRS1
RXARTS TRM
TX1
RXB
SG
P5
GND/SG
T1
Connection
Cable
RS485
Terminal
Block
Multi-drop adapter
RS485 TransceiverRS232C Transceiver
TTermination registors : 1/2W 120Ω
[ one-to-one configuration ]
[ one-to-N configuration ]
CU111
Operator interface unit
T1 main unit : T1-16/28/40
Other T-sereis PLCT1 main unit : T1-16/28/40T1 main unit : T1-16/28/40
RS485RS232C
ADP-
6237B
CU111 CU111
RS485
RS232C
RS232C
RS232C

6
CU111 connection
6.Computer Link (RS485) interface
(1)Computer Link (RS485) signal name and pin assignment
(2)Computer Link (RS485) interface connection
Short between RXA(Pin No.3) and TRM(Pin No.4) for termination of one-to-one configuration
at CU111. Refer to the next page.
Note
¬Use the shielded twisted-paired cable for noise immunity and ground the cable shield at
one end.
-Connect SG (Signal Ground) each other.
®The adapter does not have the frame ground (FG) terminal, so please ground directly.
¯Please make the program transmitting again.
Pin No. Signal Name Function
1TXA CU111→RS485 (In phase signal)
2TXB CU111→RS485 (Reverse signal)
3RXA CU111←RS485 (In phase signal)
4TRM Termination
5RXB CU111←RS485 (Reverse signal)
6SG Signal Ground
TXA
1
TXB
2
RXA
3
TRM
4
RXB
5
SG
6
R
Sheilded
twisted-paired cable
RS232C/RS485
Multi-drop adapter
CU111
Host Equipment
RS485 Interface
1
TXA RXA RXDTXD
2
TXB RXB
3TXARXA
4TXDRXD TRM
5TXB
RXB
6SGSG

7
CU111 Connection
(3)Computer Link signal and connect termination registors
PROSEC
T1
TOSHIBA MDR16
OUT
IN
Connect cables according to the above diagram.
Short between RXA and TRM(TERM) for termination at the end of both CU111 and ADP-
6237B.
PROSEC
T1
TOSHIBA MDR16
OUT
IN
PROSEC
T1
TOSHIBA MDR16
OUT
IN
PROSEC
T1
TOSHIBA MDR16
OUT
IN
Connect cables according to the above diagram.
Connect termination registor 1/2W-220Ωbetween RXA and TXB, and between TXA and
TXB at both terminal stations.
[ one-to-one configuration ]
[ one-to-N configuration ]
CU111
HOST
T1 main unit : T1-16/28/40
RS485
RS232C RS232C
TRM
RXA
TXB
TXA
TERM
RXA
TXB
TXA
RXB
RXB
SG
SG
RXB
TERM
RXA
TXB
TXA
SG
S
G
R
X
B
T
R
M
R
X
A
T
X
B
T
X
A
S
G
R
X
B
T
R
M
R
X
A
T
X
B
T
X
A
S
G
R
X
B
T
R
M
R
X
A
T
X
B
T
X
A
CU111
RS232C
RS232C
ADP-6237B
R
R
HOST
R
R

8
TOSHIBA INTERNATIONAL (EUROPE) LTD.
1 Roundwood Avenue
Stockley Park, Uxbridge
Middlesex, ENGLAND UB11 1AR
Tel: [phone] Fax: [phone]
TOSHIBA INTERNATIONAL CORPORATION
Industrial Division
13131 West Little York Road
Houston, TX. 77041, U.S.A.
Tel: [phone] Fax: [phone]
UG-TS01***-E011
1997-02(2)
TOSHIBA INTERNATIONAL
CORPORATION PTY. LTD.
2 Morton Street, Parramatta
N.S.W. 2150, AUSTRALIA
Tel: [phone] Fax: [phone]
TOSHIBA CORPORATION
Industrial Equipment Department
1-1, Shibaura 1-chome, Minato-ku
Tokyo 105, JAPAN
Tel: [phone]