Thermo Scientific 49i Instruction Manual page 174

Troubleshooting
Connector Pin Descriptions
6-12 Model 49i Instruction Manual
Table 6-3. Motherboard Connector Pin Descriptions, continued
Connector Reference
Label Designator
RS232/RS485:A P1:A
RS232/RS485:B P1:B
AC IN PJ1
AC 24VPWR PJ2
AC INTF BD PJ3
Pin Signal
Description
33 +24V
34 +24V
1 NC
2 Serial Port 1 RX (-RS485 IN)
3 Serial Port 1 TX (-RS485 OUT)
4 NC
5 Ground
6 NC
7 Serial Port 1 RTS (+RS485 OUT)
8 Serial Port 1 CTS (+RS485 IN)
9 NC
1 NC
2 Serial Port 2 RX (-RS485 IN)
3 Serial Port 2 TX (-RS485 OUT)
4 NC
5 Ground
6 NC
7 Serial Port 2 RTS (+RS485 OUT)
8 Serial Port 2 CTS (+RS485 IN)
9 NC
1 AC-HOT
2 AC-NEUT
3 AC-Ground
1 AC-HOT
2 AC-NEUT
3 AC-Ground
1 AC-HOT
2 AC-NEUT
3 AC-Ground
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