Hach BODTrak, Instrument Manual, Page: 23 / 63

12
Pins 1, 6, and 8 are internally connected to pin 4, so all control
outputs are active whenever the host asserts its DTR output.
2.4.2 Commands
BODTrak operation is controlled by applying computer
commands which send instructions to the instrument at any time
during a test. The commands consist of a string of two or more
Table 2: Wiring Cable from BODTrak to Computer
BODTrak 9-pin
Connector, Socket
Computer 9-pin
Connector, Socket
Pin Signal Name Pin Signal Name
1 DCD 1 DCD
2 TXD 2 RXD
3 RXD 3 TXD
4 DSR 4 DTR
5 GND 5 GND
6 DTR 6 DSR
7 Not Used 7 RTS
8 RTS 8 CTS
9 Not Used 9 RI
Table 3: Wiring Cable from BODTrak to Serial Printer
*
* Epson LQ-570+ (Cat. No. 48236-00)
BODTrak 9-pin
Connector, Socket
Printer 25-pin
Connector, Plug
Pin Signal Name Pin Signal Name
2 TXD 3 RXD
3 RXD 2 TXD
5 GND 7 GND
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