Product specifications

Page 110 of 150 198-1603-03 Rev 01
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
B.1.14
c
CRC Disable/Enable command
B.1.10
d
Readings command
B.1.15
h
Error History command
B.1.18
i
Delimiter Text Disable/Enable command
B.1.11
m
Error Status command
B.1.17
ms
Module Status command
B.1.16
n
Channel Configuration
B.1.20
s
Setup command.
B.1.12