FOR-A VSF-128128, Operation Manual

Page: 44 / 106

32
8-2-1. RS-232C Interface
RS-232C/422 connector pin assignment for RS-232C interface is as shown below.
Pin no.
Signal direction
Computer
－
VSF-600
Signal
1 Open
2 ← Transmit data (TXD)
3
→
Receive data (RXD)
4
→
Internally connected to pin 6
5 Signal ground (SG)
6 ← Internally connected to pin 4
7
→
Clear to send (CTS)
8
←
Request to send (RTS)
9 Open
An example of computer cable connection for control via RS-232C/422 interface is shown
below. This example uses a PC/AT compatible computer for the control terminal.
Signal
Pin
no
Pin
no
Signal
DCD 1 1 Open
RxD 2 2 TxD
TxD 3 3 RxD
DTR 4 4 Internally
connected to pin 6
SG 5 5 SG
DSR 6 6 Internally
connected to pin 4
RTS 7 7 CTS
CTS 8 8 RTS
RI 9 9 Open
＜ 9 pin D-sub female ＞ ＜ 9 pin D-sub female ＞
VSF-600
（ DCE ）
REMOTE
connector
Computer
（ DTE ）
RS-232C
connector