Optional Equipment
Connecting External Devices
9-2
43iQHL Instruction Manual
Thermo Scientific
The communication board consists of:
●
RS-232/485 Port
●
RS-485 External Accessory Port
The RS-232/RS-485 port uses a 9-pin serial connector with a bi-directional
serial interface that can be configured for either RS-232 or RS-485
communication.
Figure 9–2.
RS-232/RS-485 Port
Table 9–1.
RS-232/RS-485 Port Terminal Assignment
Terminal Number
Signal Name
1
No Connect
2
RX/RS485_RX_P
3
TX/RS485_TX_N
4
No Connect
5
GND
6
No Connect
7
RTS/RS485_TX_P
8
CTS/RS485_RX_N
9
No Connect
Communication
Board
RS-232/RS-485 Port
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