Thermo Scientific 49iQ, Instruction Manual

Page: 245 / 282

Optional Equipment
Connecting External Devices
Thermo Scientific 49iQ 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