When current protocols can't meet customer's need, or the customers can't find corresponding protocol to devices(modules) they developed by themselves, hmi user-defined protocol is exactly what the customers need.
Startup of ‘User-defined Protocol’
1. Select ‘User-defined Protocol Connection’
2. Open the configuration dialog box of User-defined Protocol
a. Start from the LEVI communication configuration
b. Initiate the User-defined Protocol program separately
Program interface
Ⅰ.main interface
1. Instruction input: enter the instruction you want to use
2. operation type: chose the operation type of instruction:Read register or write register transmitting check: add transmitting check
3. coding method: point out the coding method of instruction:HEX or SACII
4. other settings:
a. ‘no returning’ instruction: appoint that no instruction returns after a specified instruction is sent.
b. ‘Sending after receiving’ instruction: appoint that receive a specified instruction first and then send the instruction.
5. ‘single transmission’instruction: this instruction appoints specified bit to control single transmission
a. transmission-controlled bit: set transmission-controlled bit of the instruction
6. instruction adding: add an instruction after setting paramaters
7. cancel: cancel the current operation
8. append: append a new instruction
9. modify: modify currently selceted instruction
10. delete: delete currently selceted instruction
11. clear: clear all instructions and delete the configuration file
12. instructions list: browse all the adding instructions to be send
13. component addresses list: browse the addresses of adding components,which is in accordance to the sending instructions
14. import: import the configuration file user produces into the project directory
15. export: export the file user has configurated to any location
16. browse: browse the files user has configurated
17. exit: exit the program
Ⅱ.Sub-interface
Check settings
1. transmit check: add check bits to an instruction
2. return check:
a. starting position: point out the starting position of the instruction used for check calculation in an return instruction
b. length: length of the instruction used for check calculation
c. different with transimt check: set return check when return check is different with transmit check
3. add control characters for an instruction: add control characters for an instruction in ASCII mode
Component settings
The component parameters set in this part is in accordance to the component set in the project.
Component type: select bit component or byte component;
Component address: set the component address for the processed instruction
Component word: words for component display
Notes: simple notes on the component
Data/length setting
Note:the return data is available to read operation,while the written data is available to write operation.
Return data: point out the data part in a return instruction
a. location: the location of the data part’s first byte in the whole string of instruction(index from 1)
b. length: the number of bytes of the data part
written data:
a. drive improved instruction: in this option,there is no need to set data part and check part for a sending instruction.Instead,it is added by the drive.(currently only support the situation that check part follows closely to data part)
b. location: similar to the ‘location’ of ‘return data’
c. length: similar to the ‘length’ of ‘return data’
Instruction length settings
Sending length: the program will calculate length based on the sending instruction user has set.
Return length: user sets the length of a sending instruction’s corresponding return instruction.
Check interface
1. entered instructions: the sending instructions user has set.
2. participated check instructions:instructions used to calculate check bits
3. check type: check type selection
4. calculation: calculate check bits based on the check type selected
5. fetch bits from the results: fetch bits from the check bits calculated
6. instruction synthetise: synthetise the original instruction and check bits
7. results: the instruction to be send which has been added check bits
