ITCS -100-H81 Em b e dd e d S ys te mP a g e 20Figure 3-7: DB-9 Serial Port ConnectionS te p 4: Secure the connector. Secure the serial device connector to the externalinterface by tightening the two retention screws on either side of the connector.Step 0:3.6.2 RS -232/422/485 S e ria l P o rt Co n n e c tio nA RS-232/422/485 serial port device can be connected to the RS-232/422/485 serial porton the rear panel. The pinouts of the RS-232/422/485 serial port are shown below.Pin Description Pin Description1 COM5_DCD# 2 COM5_DSR#3 COM5_RXD 4 COM5_RTS#5 COM5_TXD 6 COM5_CTS#7 COM5_DTR# 8 COM5_RI#9 COM56_GND 10 COM56_GND11 COM6_DCD# 12 COM6_DSR#13 COM6_RXD 14 COM6_RTS#15 COM6_TXD 16 COM6_CTS#17 COM6_DTR# 18 COM6_RI#19 COM56_GND 20 COM56_GND21 COM7_DCD# 22 COM7_DSR#23 COM7_RXD 24 COM7_RTS#25 COM7_TXD 26 COM7_CTS#27 COM7_DTR# 28 COM7_RI#29 COM78_GND 30 COM78_GND31 COM8_DCD# 32 COM8_DSR#33 COM8_RXD 34 COM8_RTS#35 COM8_TXD 36 COM8_CTS#37 COM8_DTR# 38 COM8_RI#39 COM78_GND 40 COM78_GNDTable 3-3: RS-232/422/485 Serial Port PinoutsS te p 1: Locate the RS-232/422/485 connector. The locations of the RS-232/422/485connectors are shown in Chapter 1.
