Connection With Melsec A Series (Aj71Uc24) - Toshiba nv Series Instruction Manual

Chapter 2 Installation and Wiring
2.4.3

Connection with MELSEC A series (AJ71UC24)

(1) RS-232C Transmission cable connection
(2) RS-422 Transmission cable connection
(Note1)
22
6F8C1509
The table below shows the connection between the RS-232C interface
connector (25 pins) of the computer link unit and the RS-232C connector (9
pins) of the IS911 module.
IS911 Module
RS-232C
Connector
Pin Signal
Number Name
1 DCD
RXD
2
TXD
3
DTR
4
SG
5
DSR
6
RTS
7
8 CTS
9 CI
Shielded wire
The table below shows the connection between the RS-422 interface
connector (9 pins) of the computer link unit and the RS-422 / 485 terminal
block of the IS911 module.
IS911 Module
RS-485Terminal
Block
Pin Signal
Number Name
1 TXD1
TXD0
2
3 RXD1
4 RXD0
5 GRD
Shielded wire
(Note 1) If the IS911 module or computer link unit (AJ71UC24) is at the end
of the line, attach a terminating resistor.
Terminating resistor
RS-422 : 330Ω 1/4W
RS-485 : 110Ω 1/2W
AJ71UC24
RS-232C
Connection
Connector
Pin
Number
1
2
3
4
5
6
7
8
9
15
17
20
22
24
AJ71UC24
RS-422 Connector
Connection
Signal Name
SDA
SDB
RDA
RDB
SG
FG
NC
Signal
Name
FG
SD
RD
RS
CS
DSR
SG
CD
DTR
(Note1)