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1.1 Siemens S5/S7 Series
1.1.1 S5/ S7 Serial Interface
The following section describes the system configuration and interface between Siemens S5/S7
series PLC and TOP using serial communication through link unit.
1.1.1.1 System Configuration
The above figure shows system configuration to connect S5/S7 PLC to TOP. (Use 3964R
protocol)
PLC Comm. Unit Cable TOP
S5 90U
S5 95U
S5 100U
S5 115U
S5 135U
S5 155U
S7-300
S7-400
CP525
CP340
CP441-2
Refer Cable
Connection.
(RS-232 / RS-
422)
All TOP
1.1.1.2 Cable Diagram
(1) RS-232C (CP525 TOP (for 9/15 Pin Connector))
PLC Comm. Link Module(25Pin) TOP (9/15Pin)
1
CD 2
RD 3 SD
4
DTR 5 SG
6
DSR 7
RTS 8
CTS 9
1 FG
2 SD
3
RD 4
RTS 5
CTS 6
DSR 7 SG
8
CD 20
DTR
(2) RS-232C (CP340, CP441-2 TOP (for 9/15 Pin Connector))
PLC Comm. Link Module (9Pin) TOP (9/15Pin)
(3) RS-422 (CP340, CP441-2 TOP (for 5Pin terminal / 15Pin Connector)
PLC Comm. Link Module(15Pin) TOP(5Pin Terminal / 9Pin)
:
11 R(B)
9 T(B)
:
4 R(A)
3
2 T(A)
1
:
11 R(B)
9 T(B)
:
4 R(A)
3
2 T(A)
1
5(15) GND
4(14) SDB
3(13) SDA
2(12) RDB
1(11) RDA
5(15) GND
4(14) SDB
3(13) SDA
2(12) RDB
1(11) RDA
1
CD 2
RD 3 SD
4
DTR 5 SG
6
DSR 7
RTS 8
CTS 9
1
CD 3 SD
2
RD 7
RTS 8
CTS 6
DSR 5 SG
9 RI
4
DTR
(4) RS-485 (CP341, CP441-2 TOP)
PLC(15Pin) TOP(5/9/15)
9PIN DSUB TOP 422 Pin Connection (1,4,6,9,5)
15PIN DSUB TOP 422 Pin Connection (11,12,13,14,15)
1.1.1.3 CP525/CP340/ CP441-2 Setup
PLC
Baud Rate 110 bps ~ 76800 bps
Data Length 8 bit
Stop Bit 1 bit
Parity Bit EVEN
Error Detection BCC(SUM)
Priority Low
Select the RK-512 protocol for the S7, while the 3964R protocol for the S5. Also add the
Receive Function Block FB7.
The CP340 is not supported by the latest version of PC software.
< Example Configuration of CPU314 and CP341 RS232C>
Specify the RK512 protocol for the S7.
1
2 T(A)
3
4 R(A)
:
9 T(B)
11 R(B)
:
RDA 1/1/11
RDB 2/4/12
SDA 3/6/13
SDB 4/9/14
GND 5/5/15
Define the communication parameters.
Set the priority to low.
Check the value of the local address LADDR for the configuration of the FB7.
Open OB1, and drag and retrieve the FB7 P_RCV_RK CP341 from the CP 341 folder in the
program elements.
Enter the DB number (DB7) to be used by the FB7 to receive the communication on the
top. Then the corresponding DB is automatically created. Turn the EN_R ON to enable
the communication. R is reset input, and LADDR is the local address value checked in
the previous step.Enter one of DB Nos. to be used. The read/write communication is
available within the assigned DB area only.
1.1.2 < TOP Set up >
(1) TOP Designer Setup
Select the Siemens S5-3964R, S7-3964/RK512 (Link) in the external device.
(2) TOP Serial Set Up
The recommended setup information is as follows:
Serial Baud Rate : 38400 bps
Serial Data Bit : 8bit
Serial Stop Bit: 1bit
Serial Parity Bit : EVEN
Serial Signal Level: RS-232
Station Number (0-31) to Diagnose the Communication : N/A
Available Address List
Device Word Address
Data Register *1
D002:000 ~ D255:255
Expansive Data Register *1
X002:000 ~ X255:255
*1 : Data Register and Expansive Data Register are as follows.
D002:000
Data Word(DW) : 000~255
Data Block(DB) : 000~255
Expansive Data Register is available in only S5 135U/155U.
Last two digits are used in Bits.
D002:000:00
REF.
1.1.3 S7-300/400 (CPU MPI Direct Connection)
S7-300/400 (Direct Connection to CPU via MPI Port
The following section describes the system configuration and interface between Siemens S7-
300/400 series PLC and XTOP using direct connection.
1.1.3.1 System Configuration
This figure shows system configuration to connect S7 PLC to TOP.
PLC Comm. Unit Cable TOP
CPU312IFM
CPU313
CPU314
CPU315
CPU315-2DP
CPU MPI Port
Refer Cable
Connection
(RS-485C)
Only for XTOP
Unsupported for
ATOP
1.1.3.2 Cable Diagram
(1) RS-485 (CPU MPI port XTOP(for 9/15Pin Connector)
PLC (9Pin) TOP (9/15Pin)
1(11) RDA
CD 2
3
4(12) RDB
5(15) SG
6(13) SDA
7
8
9(14) SDB
1
2
3 TRX+
4
5 SG
6
7
8 TRX-
9
1.1.3.3 TOP Setup
(1) TOP Designer Setup
Select the Siemens MPI Direct in the Target PLC type.
Configure the MPI Address of TOP on Station No.,the MPI Address of S7 on PLC Node
(2) TOP Serial Setup
Recommended settings are as follows.
- Serial Baud Rate : 187500 bps
- Serial Data Bit : 8bit(Auto set)
- Serial Stop Bit: 1bit(Auto set)
- Serial Parity Bit : EVEN(Auto set)
- Serial Signal Level : RS-485
- Controllers Station No. at Comm. Diagnosis(0~31) : Not effect.
PLC node and Tops station No must be set differently each other.
We recommend Highest Node 15.
1:n, n:1 and n:m connection is not supported, but 1:1 connection is only
supported.
MPI Direct is supported only XTOP model.
REF.
S7-300/400 (CPU MPI Port + PC Adapter)
The following section describes the system configuration and interface between Siemens S7-
300/400 series PLC and TOP using serial communication through PC adapter.
1.1.3.4 System Configuration
This figure shows system configuration to connect S7 PLC to TOP.
PLC Comm. Unit Cable TOP
CPU312IFM
CPU313
CPU314
CPU315
CPU315-2DP
PC Adapter
Refer Cable
Connection
(RS-232C)
All TOP
1.1.3.5 Cable Diagram
(1) RS-232C (PC Adapter TOP(for 9/15Pin Connector)
PLC PC Adapter(9Pin) TOP (9/16Pin)
1
CD 2
RD 3 SD
4
DTR 5 SG
6
DSR 7
RTS 8
CTS 9
1
CD 3 SD
2
RD 7
RTS 8
CTS 6
DSR 5 SG
9 RI
4
DTR
1.1.3.6 S7-300/400 CPU Setup
PLC Setting
Baud Rate 19200 ~ 38400 bps
Data Length 8 bit
Stop Bit 1 bit
Parity Bit ODD
Error Detection BCC(SUM)
1.1.3.7 TOP Setup
(1) TOP Designer Setup
Select S7-300/400 MPI(LOADER) of Siemens Series in PLC type.
(2) TOP Serial Setup
Recommended settings are as follows.
- Serial Baud Rate : 19200 bps
- Serial Data Bit : 8bit
- Serial Stop Bit: 1bit
- Serial Parity Bit : ODD
- Serial Signal Level : RS-232
- Controllers Station No. at Comm. Diagnosis(0~31) : 1
PLC node and Controllers station No must be set differently each other.
Highest node should not exceed PLC node. For example, If PLC node is set 16
by user, highest node should be set 31 or above.
1.1.4 < S7-300/400 CPU Set up >
1.1.5 Configuration of S7-300/400 CPU >
(1) Hardware Configuration
Assign 187.5Kbps to the Transmission rate in the Network Setting tab of the MPI interface
as shown in the figure below. Change the highest address to 15 for a fast connection in the
communication network.
REF.
(2) Options > Set PG/PC Interface > PC Adapter > MPI
Assign 187.5 Kbps to the Transmission Rate as shown in the figure below. As the Highest
Address is for the PC, the value is different from the MPI address.
Select the Highest Node Address in the TOP Designer in case a PC Adapter is used. (see
Project Information in the Designer)
(3) Options > Set PG/PC Interface > PC Adapter > Local Connection
The Local Connection is the speed at which the PC communicates with the TOP in case a
PC Adapter is used.