Epson V7 User Manual

* When using the 6ES5 734-1BD20 cable made by SIEMENS, connect the cable shown in [Wiring 

Diagram 3] to the D-sub 25-pin side of the 6ES5 734-1BD20 cable for communications with the V7 
series.

The recommended communication parameter settings of the PLC and the V7 series is as follows:

Select PLC Type

PLC

Unit/Port

Connection

S5

(S5 V4)

S5-90U
S5-95U
S5-100U

CP-521SI
(3964R Transmission 
Protocol)

RS-232C

[Wiring Diagram 1]

S5-115U
S5-135U
S5-155U

CP-524 (3964R/RK512)
CP-544 (3964R/RK512)

RS-232C

[Wiring Diagram 1]

RS-422

[Wiring Diagram 6]

S5-95U

Second serial interface
(3964R Transmission 
Protocol)

SIEMENS’s 6ES5 734-1BD20 
cable

*

+

RS-232C

[Wiring Diagram 3]

S5  PG port

S5 series

Programming port on 
the CPU unit

S7

S7-300

CP-341 (3964R/RK512)

RS-232C

[Wiring Diagram 2]

RS-422

[Wiring Diagram 6]

S7-400

CP-441 (3964R/RK512)

S7-200 PPI

S7-200 series

PPI

RS-422

[Wiring Diagram 7]

S7-300MPI

(HMI ADP)

S7-300/400 series 
(MPI port)

SIEMENS’s HMI 
Adapter 
6ES7 972 0CA11-0XA0

RS-232C

[Wiring Diagram 5]

S7-300MPI

(PC ADP)

SIEMENS’s PC Adapter
6ES7 9720CA23-0XA0

TI500/505

(TI500/505 V4)

TI545/555

CPU port (bulit-in)

RS-232C

[Wiring Diagram 4]

RS-422

[Wiring Diagram 8]

Item

Setting on PLC

V7 Comm. Parameter Setting

Baud rate

9600 bps

9600 bps

Parity

Even parity

Even

Transmission code

Data length

8

8

Stop bit

1

1

Busy signal

NO (fixed)

−

Hand shake

OFF (fixed)

−