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Appendix A: Specifications
A-2 6H128-08 and 6H129-08 User’s Guide
A.4 INPUT/OUTPUT PORTS
6H128-08 and 6H129-08 Specifications
A.5 COM PORT PINOUT ASSIGNMENTS
The COM port is a serial communications port that supports Local
Management or connection to a UPS.
The COM port has the following pin assignments:
Ports 1 through 6 Fast Ethernet (100BASE-FX compliant)
with SC type connectors. 6H128-08 uses
multimode fiber, and the 6H129-08 uses
single mode fiber.
Slots for optional Fast
Ethernet Interface Modules
(ports 7 and 8)
Slots accept optional Fast Ethernet
Interface Modules: the FE100-TX,
FE100-FX and the FE-100F3, also check
the Release Notes for other Modules that
may be available.
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