Instruction manual

21
2. Pin position
Pin position of the RS-232C cable (D-Sub 9-pin side, female )
Pin No. Signal name Direction Description
1 (Vs) -
Internally used* (Power supply GND terminal for external
equipment)
2 TXD Output
Transmit data
3 RXD Input
Receive data
4 - - N.C.
5 SG - Signal ground
6 - - Internally used*
7 RTS Input Request to send
8 CTS Output Permission to send
9 (Va) -
Internally used* (Power supply output terminal for external
equipment
CTS and RTS are internally connected in the balance.
The AD-4212C can communicate by connecting TXD, RXD and SG.
* When connecting to a PLC such as the external equipment, do not connect to the internally
used signal line.
3. Data output format
- This format consists of fifteen characters excluding the terminator<CR><LF>.
- A header of two characters indicates the balance condition.
- The polarity sign is placed before the data with the leading zeros. If the data is zero, the plus sign is
applied.
Example of output
1 2 3 4 5 678910111213 14 15
S T , + 0 012 . 345 g
When stable
S T , + 0 012 . 345 g
When unstable
U S , + 0 005 . 432 g
When over state (plus over)
O L , + 9 999999E+ 1 9
When over state (minus over)
O L , - 9 999999E+ 1 9
Header Data Unit
5 1
9 6
Inch screw