36
12. Communication
Serial communication and Tool port communication cannot be used together.
When performing Serial communication, remove the tool cable (AKT4H820) from the USB port of the PC
and tool connector of the KT4H/B.
When performing Tool port communication, it is not required to remove the Serial communication cables.
However, do not send a command from the master side.
12.1 System configuration
(Fig. 12.1-1)
12.2 Wiring
Wiring example using a communication converter
When using D-sub 9-pin connector
(Fig. 12.2-1)
When using D-sub 25-pin connector
(Fig. 12.2-2)
Host computer
KT4H/B
No. 1
KT4H/B
No. 2
KT4H/B
No. 31
Communication converter
RS-232C
RS-485
Host computer
Shielded
wire
D-sub 9-pin connector
KT4H/B
FG
FG
FG
D-sub 25-pin connector
KT4H/B
Host computer
FG
FG
Shielded
wire
Shielded
wire
Shielded
wire
