Section 8 Rs-232 Communication; Hardware Connect; Interface Specification - Vetek VC Series Technical Manual

SECTION 8 RS-232 COMMUNICATION

8. 1 Hardware connect

Pin No.
１
２
３
４
５
６
７
８
９
Note: Tare from outside of the scale is available by connecting the INPUT line and SIGNAL
GROUND by a transistor switch or a relay contact. Max 15V while "OFF" SINK 20mA while "ON".
Tare (Zero adjusting) when it is connected.
connection with IBM-PC／AT
IBM－PC／ＡＴ
Ｄ‐ＳＵＢ９Ｐ
ＴＸＤ ３
ＲＸＤ ２
ＧＮＤ ５
ＤＣＯ １
ＲＴＳ ７
ＣＴＳ ８
ＤＳＲ ６
ＤＴＲ ４
- 14 -
VC series bench scales Technical Manual
Signal In/Output
EXT.TARE Input
RXD Input
TXD Output
DTR Output
―
GND
― ―
― ―
― ―
―
GND
１ ２
６
D-SUB 9-pin male connector：rear panel
External tare
Receiving data
Transmission data
HIGH level with power "on"
Signal ground
Signal ground
３ ４ ５
７ ８ ９
Functions
※ 2
➁
―
―
―
Scale
Ｄ‐ＳＵＢ９Ｐ
２
３
５
ＲＸＤ
ＴＸＤ
ＧＮＤ