Serial Terminal - Siemens RUGGEDCOM RMC20 Installation Manual

Chapter 3
Communication Ports
Figure 11: ST Port
1. Tx Connector 2. Rx Connector
For specifications on the available fiber optic ports, refer to
To accommodate a wide array of fiber optical devices, the RMC20 is equipped with a mode selector switch
located on the bottom of the device. The mode selector switch configures the RMC20 to accommodate different
fiber partners that operate at various duplex modes and speeds. Choose the appropriate operating mode
according to the fiber link partner.
Configuration
Transparent Mode
HDX Mode
FDX Mode
Reserved
a
Should ONLY be used on 10FL series RMC20 products.
The transparent mode can be utilized when BOTH the copper side and fiber side devices are capable of auto-
negotiating duplex mode and speed as per TIA/EIA-785. When both partners are capable of negotiation, the
RMC20 can support 100Base-TX to 100Base-SX, full duplex, copper-to-fiber media conversion on 10FL standard
electronics and fiber media. The TIA/EIA-785 standard allows for 10FL communication lines that are less than
300m in length to be upgraded to 100 Mb/s communication links.
The HDX and FDX modes exist to accommodate fiber link partners that are operating in the forced mode. Due
to the high number of forced full duplex fiber optical devices available, the factory default is the FDX, full duplex,
mode.
Section 3.2

Serial Terminal

The RMC20 is equipped with a seven-terminal Phoenix-style connector. This connector can accommodate one
RS232 connection, and one RS485/422 connection. The following is the pin-out for the serial terminal:
14
1
SW1
a
OFF
OFF
ON
ON
Section 4.2, "Fiber Optic Port
Mode Selector Positioning
SW2
2
Specifications".
10/100 Auto-negotiating
OFF
transparent mode
ON Half-Duplex fiber partner
OFF
ON
RUGGEDCOM RMC20
Installation Guide
Description
Full-Duplex fiber
partner (default)
Serial Terminal