Agilent Technologies TwisTorr 84 FS PCB 24 Mode D'emploi page 183

The following figure shows a typical logic output connection, but any
other device may be connected, and the related simplified circuit of
the controller.
Figure 11
J5 RS-232 Interface Connector
Figure 12
The signal of J5, the RS-232 interface connector, are the following:
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TwisTorr 84 FS PCB 24 Vdc Controller User Manual / 87-901-039-01 (B)
Typical Logic Output
J2 – Interface Connector
Pin 1 Ground.
Pin 2 RXD. Received data.
Pin 3 TXD. Transmitted data.
Pin 4 24 Vdc Output (power supply to HHT, if necessary)
Technical Information
Installation
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