Serial Port Profiles

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

When enabled, specifies the character that when received will define when the

Character

packet is ready for transmission. The actual transmission of the packet is based

 

on the Trigger Forwarding Rule.

 

Range: Hex 0-FF

 

Default: 0

Enable Trigger2

When enabled, creates a sequence of characters that must be received to

Character

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: Hex 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

SOF1 Character

When enabled, the Start of Frame character defines the first character of the

 

frame, any character(s) received before the Start of Frame character is ignored.

 

Range: Hex 0-FF

 

Default: 0

SOF2 Character

When enabled, creates a sequence of characters that must be received to create

 

the start of the frame (if the SOF1 character is not immediately followed by the

 

SOF2 character, the IOLAN waits for another SOF1 character to start the

 

SOF1/SOF2 character sequence).

 

Range: Hex 0-FF

 

Default: 0

Transmit SOF

When enabled, the SOF1 or SOF1/SOF2 characters will be transmitted with

Character(s)

the frame. If not enabled, the SOF1 or SOF1/SOF2 characters will be stripped

 

from the transmission.

 

Default: Disabled

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Perle Systems SCS Packet Definition, Packet Size, Idle Time, Enable Trigger1, Character, Enable Trigger2, Frame Definition