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Wiring
Serial Communications
Communications
Using Serial
Communications
4-6
KRILPRO Installation Guide
Serial
The instrument provides one RS232 single-drop serial interface. Screw
terminal connectors for the port are located on the CPU board. The
transmitter includes a display and a keypad that are typically used as the
primary means of communicating with the instrument.
RS232
Refer to the transmitter wiring drawings (868680-8) for RS232 wiring
details. The serial port on a PC (COM1 or COM2) can be connected
directly to the RS232 port on the instrument. This requires five wires:
ground, transmit (TX), receive (RX), RTS, and CTS. The connection
between the instrument port connector (located on the CPU board in the
transmitter) and the PC serial port are summarized in the following table
for standard DB9 and DB25 PC serial port connectors.
Table 4–2. RS232 connections
CPU Board (J8) RS232
Connector
Pin 1 of J8 (RTS)
Pin 2 of J8 (TX)
Pin 3 of J8 (CTS)
Pin 4 of J8 (RTS)
Pin 5 of J8 (GND)
In order to communicate with the instrument from a PC, the PC must be
running Thermo Scientific TMTComm, a Windows-based software, or
another terminal emulation software, such as HyperTerminal.
The default communication settings for the RS232 port of the instrument
are:
Data bits: 7
●
Parity: Even
●
Stop bits: 1
●
Baud rate: 9600
●
Refer to the KRILPRO user guide (p/n 717908) for additional details
about setting up and using serial communications.
PC Serial Port DB9
Connector
Pin 8
Pin 2
Pin 7
Pin 3
Pin 5
PC Serial Port DB25
Connector
Pin 5
Pin 3
Pin 4
Pin 2
Pin 7
Thermo Fisher Scientific
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