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Input/Output Ports
A-2 Specifications
A.4 INPUT/OUTPUT PORTS
6H253-13 Specifications
6H203-24 Specifications
A.5 COM PORT PINOUT ASSIGNMENTS
The COM port is a serial communications port that supports Local Management or connection to a
UPS.
Tab le A-1 shows the COM port pin assignments:
Ports 1 through 12: Fast Ethernet 10/100 Mbps (100BASE-TX compliant)
with one RJ21 connector.
Slot for optional High Speed Interface
Module (HSIM) or Very High Speed
Interface Module (VHSIM): Slot accepts optional HSIMs or VHSIMs that provide a
variety of physical cabling types.
Ports 1 through 24: Fast Ethernet 10/100 Mbps (100BASE-TX compliant)
with two RJ21 connectors.
Table A-1 COM Port Pin Assignments
Pin Signal Name Input/Output
1 Transmit Data (XMT) Output
2 Data Carrier Detect (DCD) Output
3 Data Set Ready (DSR) Input
4 Receive Data (RCV) Input
5 Signal Ground (GND) NA
6 Data Terminal Ready (DTR) Output
7 Request to Send (RTS) Input
8 Clear to Send (CTS) NA