SMP Gateway User Manual • 35
For each port, choose the type of interface to be used. Most substation devices typically use
either Asynchronous RS-232 or Asynchronous RS-422/485. If you are using a serial port for
a touch screen, select ELO Touchscreen.
Serial port naming conventions
The SMP 16 provides 16 serial ports, identified as A01 through A16. It also has a modem port
labeled Modem, which has a “Modem Asynchronous” interface. The SMP 16/SG can also
house up to 2 additional serial ports boards, which will be identified as B01 to B16 and D01
to D16.
The SMP 4 and SMP 4-20 both provide 4 built-in serial ports. These ports are identified as
COM1 Board A through COM4 Board A.
The SMP 4 also provides a built-in console serial port. This port is identified as Built-in
Console 1 Board A. This feature allows you to use the Console port as a standard serial port.
If the SMP 4 has an internal modem, then it provides 3 built-in serial ports and 1 built-in
modem port. These ports are also identified as COM1 Board A through COM4 Board A;
however, the Interface column in the right pane indicates that the interface for COM4 Board
A is “Modem Asynchronous”.
The SMP 8-40 provides 4 additional ports named COM1 Board B through COM4 Board B.
The SMP 4-20 and SMP 8-40 SIOM use IPack modules to provide additional ports in groups
of 8. The ports in the first group are called IPack_A1 Board A through IPack_A8 Board A.
The ports in the second group are called IPack_B1 Board A through IPack_B8 Board A.
The SMP 8-40 supports two additional groups of ports called IPack_A1 Board B through
IPack_A8 Board B and IPack_B1 Board B to IPack_B8 Board B.
The purpose of each interface is given in the following table:
Interface Description
Asynchronous RS-232
Use this value to indicate that the serial port is dedicated to establishing
a standard asynchronous RS-232 connection.
Asynchronous RS-422/485
Use this value to indicate that the serial port is dedicated to establishing
an asynchronous RS-422 or RS-485 connection.
Modem Asynchronous
This value indicates that the port is used for modem asynchronous
communication. The value is automatically assigned to the Modem port
of an SMP 16 and to the COM4 Board A port of an SMP 4 equipped
with an internal modem.
RAS (remote access server)
Use this value to indicate that the serial port is configured to accept
incoming direct serial connections. This type of connection allows you
to use the SMP Tools as if you were connected to the SMP Gateway via
a normal network connection. By default, the console port is always
configured for RAS.
Refer to the SMP 4 Installation Guide, GUI-00316-00026 T, or to the
SMP 16 Installation Guide, GUI-00316-00032 T, for instructions on
setting up a RAS IP address pool. Then refer to “Erreur ! Résultat
incorrect pour une table.”, page 203, in the present manual, for the
step-by-step installation procedure.
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