Chapter 2 Communication Order For It8500; Frame Format - ITech IT8500+ Series Manual

EVEN 8 data bits have even parity
ODD
NONE 8 data bits have no parity
Native machine address: (0 ~31, factory default is 0)
USB Interface
Connect the load and the computer using a cable with two USB interfaces
(each end). All functions of the load can be programmed via USB.
After connecting the load and computer by USB, you need to install IT-E122
driver (download from ITECH official website or contact ITECH agent). The
device manager of PC will display 'Prolific USB-to-Serial COM Port' after
installing.
Notes: Only IT8513B+/IT8514B+/IT8514C+/IT8516C+ models have the USB
communication interface. After the driver is installed successfully, use USB
line to connect in communication. (Please don't connect DB9 interface at the
same time). Don't need to set the menu.

Chapter 2 Communication Order for IT8500+

Frame Format

Frame length is 26 bytes. Details as following:
AAH Address
Description ：
1． Start bit is AAH，occupies one byte.
2． Address range from 0 to 31, occupies one byte. 0XFF is boardcast address.
3． Each command occupies one byte. Following is the command details.
20H Set the Remote control mode
21H Set the input on/off state
22H Set the max input voltage
23H Enquire the max setup input voltage.
24H Set max input current
25H Enquire the max setup input current.
26H Set max input power.
27H Enquire the max setup input power.
28H Set CC/CV/CW/CR operation mode of electronic load.
8 data bits have odd parity
Start Bit
Command 4—25bytes are information content
8 Data Bits Parity=None
9
Stop Bit
Parity code