User Manual

PRO-FLEX SERIES TRANSCEIVER MODULES
HOST PROTOCOL GUIDE
The information in this document is subject to change without notice.
Confirm the data is current by downloading the latest revision of this document from www.lsr.com.
PFLX-UG-0001-00-09 Copyright © 2009 LS Research, LLC Page 7 of 37
3 Host Protocol Message Definitions
The information contained in this section is abbreviated and omits the header
and trailer information which is common to all serial host messages.
3.1 Host Protocol Field Descriptions
3.1.1 Host to Module
This field shows the message type for messages that get sent from the host
device to the module, and are within the range of 0x01 through 0x7F.
Host to
Module
Module to
Host
Allow
Remote
Message
Length
Payload
Length
Payload
Name
Description
Figure 2 Host to Module
3.1.2 Module to Host
This field shows the message type for messages that get sent from the module to
the host device, and are within the range of 0x81 through 0x8F.
Host to
Module
Module to
Host
Allow
Remote
Message
Length
Payload
Length
Payload
Name
Description
Figure 3 Module to Host
3.1.3 Allow Remote
This column will contain an “x” if the message supports being issued to a remote
module. A remote module is a module that is not physically hardwired to the host
device that issues the message. In general host messages can only be issued to
a remote device that is on the same PAN ID and RF channel of the hardwired
local module.
Host to
Module
Module to
Host
Allow
Remote
Message
Length
Payload
Length
Payload
Name
Description
Figure 4 Allow Remote
3.1.4 Message Length
This column contains the length of the entire message, which consists of the
header (6 bytes), payload, and trailer (2 bytes). The minimum sized message is
8 bytes and occurs in messages that contain no payload.