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198-1600-00 Rev F
Appendix B: Host Port Protocol
B.1.1 Host Protocol Version Information
Host Protocol Version
Firmware Versions
0.01
Initial protocol, a modified version of the 1200W LT host protocol
0.02
Protocol updated for better multi-channel support, not compatible with
previous versions.
0.03
Various configuration commands added for initial system configuration.
The “ms” module status was updated to support more than one inverter
control, and additional status bits were added.
1.01
Added support for reversing. Previous versions of the protocol remain
compatible with this new version. New parameters were added to the end of
some commands.
1.02
Added the ability to select the type of readings reported. The reading type
selected in the “s” message determines what format reading is reported in
the “d” message and also on the display.
*
1.03
Added another status field and thermistor 5 temperature to the “ms” msg
* Protocol version defined in this document
B.1.2 Command List
Command
Character
Description
Section
*
Slave responses, ACK or NAK, always return the same letter as
command received by the slave from the host.
a
State command
c
CRC Disable/Enable command
d
Readings command
h
Error History command
i
Delimiter Text Disable/Enable command
m
Error Status command
ms
Module Status command
n
Channel Configuration
s
Setup command.
t
Unit Settings command
u
Unit info command
w
Waveform command