9-Pin Accessory Connector - Thermo Scientific ULT-80 Installation & Operation Manual

9-Pin Accessory
Connector
The circulator is equipped with two 9-pin D-connectors located on the rear of
the control box. The female COMM is used for RS232 communication (see
Appendix); the male is used with an optional external sensor.
RS232 Pin Connections
Pin #
Hardware
Remote Sensor Connections
Pin #
Hardware
Function
1 No connection.
2 TX = Transmitted data from controller
3 RX = Received data to controller
4 No connection
5 GND = Signal ground
6 No connection.
7 CTS = Clear to send
8 RTS = Request to send
9 No connection
Internal Connector
AMP Part# 745491-2
Function
1 3-wire RTD connection A
2 No connection
3 No connection
4 3-wire RTD connection A
5 No connection
6 No connection.
7 3-wire RTD connection B
8 No connection
9 No connection
Internal Connector
AMP Part# 745492-2
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Mating Connector
AMP Part# 745492-2
Example
Mating Connector
AMP Part# 745491-2