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COM Port/Pin Assignments
2E48-27R/2E49-27R User’s Guide A-3
A.6 COM PORT/PIN ASSIGNMENTS
The COM port is a serial communications port that supports Local
Management or connection to a UPS.
Table A-1 shows the COM port pin assignments.
A.7 REGULATORY COMPLIANCE
This equipment meets the following safety and electromagnetic
compatibility (EMC) requirements:
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
Safety UL 1950, CSA C22.2 No. 950,
EN 60950, IEC 950, and 73/23/EEC
Electromagnetic
Compatibility (EMC)
FCC Part 15, EN 55022, CSA C108.8,
EN 50082-1, AS/NZS 3548, VCCI V-3,
and 89/336/EEC