Asentria SiteBoss 530, User Manual

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Asentria SiteBoss 530 User Manual
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Passthrough
Passthrough (also known as “Bypass”) is a bi-directional communication link for either a modem or Telnet
connection through the S530 to a device attached to a serial port. Passthrough is useful for configuring or
maintaining devices connected to the S530 without having to be in the same physical location.
Passthrough to a serial port is available on TCP ports 210
n
where ‘
n
’ is the number of the serial port.
Passthrough to a serial port is available via from any command processor, including serial, modem, Telnet or
SSH connections using the
BYPASSn
command where ‘
n
’ is the number of the serial port.
To terminate a passthrough session, press the Escape Key three times.
Following is a table showing what passthrough sub-features/behaviors are applicable to the S530 and a detailed
description of each sub-feature below the table.
Sub-feature S530
Bypass command Yes
Adjustable end sequence pause Yes
End sequence for network passthrough
3 escapes (via login menu) or 1 escape (via
bypass command)
End sequence for modem passthrough 1 escape (via bypass command)
Joinable sessions Yes
Buffered passthrough No
Allow serial break Yes
Bypass command
The command
BYPASSn
, where '
n
’ is the number of the serial port, is used from any command processor,
including serial, modem, Telnet or SSH connections to establish a passthrough connection.
Adjustable end sequence pause
This feature means you can control the minimum amount of time between entering escape characters that the
unit will register as an authentic escape sequence. That is, you can set this to 1/4 second, meaning that in order
to escape passthrough, you must enter the escape sequence with at least 1/4 second between each escape. The
point is to make the unit disregard escape sequences that happen from the passthrough data itself, which is
assumed to travel across the link without pauses between the escape characters. The
sys.pt.endpause
setting controls this.
Joinable sessions
Up to 3 passthrough sessions can be joined in that they all connect to the same serial port. Data arriving on the
serial port gets passed through to all parties, and data arriving from any one party gets passed through to the
connected serial port as well as the other parties.
Buffered passthrough
Note:
This option is not available on the S530.
Buffered passthrough is where upon connecting to a passthrough session, the first thing the unit does is dump all
data that has been buffered in that port's database file, instead of connecting to the port right away. Once all data
from that file is output then unit connects you to the port. If no data has been buffered (or this feature is turned off)
then the unit initially connects you to the port.
Serial Break
The S530 gives a passthrough client the ability to apply the 'serial break condition’ on any passthrough serial port. A
serial break can be a "wake up“ signal to a device connected to any of the S530 serial ports. This feature allows the
user to set: the ASCII character to be used for the break, and; the maximum number of times during the current
passthrough session the connected device will recognize that character as the break. After that number of times, that