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Serial Port Profiles
Prevent Message
Fragmentation
This option detects the message, packet, or data blocking characteristics of the
serial data and preserves it throughout the communication. Select this option
for message-based applications or serial devices that are sensitive to inter-
character delays within these messages.
Default: Disabled
Delay Between
Messages
The minimum time, in milliseconds, between messages that must pass before
the data is forwarded by the IOLAN.
Range: 0-65535
Default: 250 ms
Custom Packet
Forwarding
This option allows you to define the packet forwarding rules based on the
packet definition or the frame definition.
Default: Disabled
Packet Definition When enabled, this group of parameters allows you to set a variety of packet
definition options. The first criteria that is met causes the packet to be
transmitted. For example, if you set a
Force Transmit Timer of 1000 ms and a
Packet Size of 100 bytes, whichever criteria is met first is what will cause the
packet to be transmitted.
Default: Enabled
Packet Size The number of bytes that must be received from the serial port before the
packet is transmitted to the network. A value of zero (0) ignores this parameter.
Range: 0-1024 bytes
Default: 0
Idle Time The amount of time, in milliseconds, that must elapse between characters
before the packet is transmitted to the network. A value of zero (0) ignores this
parameter.
Range: 0-65535 ms
Default: 0
Enable Trigger1
Character
When enabled, specifies the character that when received will define when the
packet is ready for transmission. The actual transmission of the packet is based
on the Trigger Forwarding Rule.
Range: hexadecimal 0-FF
Default: 0
Enable Trigger2
Character
When enabled, creates a sequence of characters that must be received to
specify when the packet is ready for transmission (if the End Trigger1
character is not immediately followed by the End Trigger2 character, the
IOLAN waits for another End Trigger1 character to start the End Trigger1/End
Trigger2 character sequence). The actual transmission of the packet is based on
the Trigger Forwarding Rule.
Range: hexadecimal 0-FF
Default: 0
Frame Definition When enabled, this group of parameters allows you to control the frame that is
transmitted by defining the start and end of frame character(s). If the internal
buffer (1024 bytes) is full before the EOF character(s) are received, the packet
will be transmitted and the EOF character(s) search will continue.
Default: Disabled
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