
j RS-232 connector (optional) — Connect a host computer or control system to the
RS-232 connector. Use this port to send Simple Instruction Set (SIS™) commands
to the SME100 for device configuration and control. The default protocol for this
port is 9600 baud rate, no parity bit, 8 data bits, 1 stop bit, and no flow control
(handshaking).
• For information on SIS commands, see the "Simple Instruction Set (SIS)
Control" section on page 124 and the "Command and Response Table for SIS
Commands" section on page 133.
• See figure 9 below to wire the RS-232 connector.
Ground
Tx
Rx
_
Receive
Transmit
Device Pins
Pins
Figure 9. RS-232 Connector Wiring
k Reset button and LED — The Reset button is used to reset the SME100. The
Reset LED provides the status of the reset and is used with the Reset button during a
reset of the SME100. The SME100 has four reset modes. For information on using
the reset button on the SME100, see the "Resetting the SME100 Using the
Rear Panel" section on page 15.
l RJ-45 Ethernet connector — Connect one end of an RJ-45 cable to the Ethernet
connector on the SME100 (see figure 10). Connect the other end of the RJ-45 cable to
a router or switch to connect the SME100 to a network.
ACTLINK
Figure 10. RJ-45 Ethernet Connector
The LEDs on the Ethernet connector indicate the status of the network connection.
• Link LED — This green colored LED lights when the SME100 is connected to a
network.
• Act LED — This amber colored LED flickers as the SME100 actively
communicates with a network.
SME100 • Panels and Cabling 14
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