LXE 1280, Reference Manual

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108 Message Format
LDS Plus Reference Guide E-SW-LDSPLUSRG-G
Type (TYPE)
The type character indicates to the network device or host computer whether a message is:
Inbound A single character that allows the host computer to determine if this is a
message from a DOS terminal or a protocol message from the network
device.
Outbound A single character that allows the network device to determine if it should
transmit the message to a DOS terminal or if it is a protocol message
requiring some different action.
Protocol One or two characters that allow the host computer or network device to
determine if the message is a protocol message or a text message being
received from or transmitted to a DOS terminal.
Location of the Type character in an outbound message containing data:
SOL ID1 ID2 TYPE CTRL N/EF SEQ # TEXT EOL
Figure 4-6 Location of Type Character in Outbound Message
Inbound Message With Data
Inbound messages with data use M as the Type. The letter M is always uppercase. The M in the
Type location indicates to the host that this is a message from a DOS terminal and is not a
protocol message.
Here is an example of an inbound message type:
M is an inbound message type that is sent
from terminal ID 14 to the host computer.
<14 M @11)C
R
L
F
Figure 4-7 Inbound Message Type M
The next character, after the Type character, in the message format is CTRL.