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Optional Equipment
Connecting External Devices
Thermo Scientific
42iQD Instruction Manual
9-3
The RS-485 external accessory port uses a 15-pin serial connector for
communication with external smart devices.
Figure 9–3.
RS-485 External Accessory Port
Table 9–2.
RS-485 External Accessory Port Terminal Assignment
Terminal Number
Signal Name
1
EXT_RS485_RX_N
2
EXT_RS485_RX_P
3
+5V (Fused @0.4A)
4
+5V (Fused @0.4A)
5
+5V (Fused @0.4A)
6
GND
7
GND
8
GND
9
EXT_RS485_TX_N
10
EXT_RS485_TX_P
11
+24V (Fused @0.4A)
12
+24V (Fused @0.4A)
13
+24V (Fused @0.4A)
14
+24V (Fused @0.4A)
15
+24V (Fused @0.4A)
RS-485 External
Accessory Port
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