Setra Systems Power Patrol, Руководство оператора

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62
Write Single Register
This command writes to a single holding register of the Power Patrol. The normal response is an echo of
the request, returned after the register contents are written.
Command Information
Command
Layout
Example
Command
Power Patrol address nn 37
Command number 06 06
Register to write – high order bits xx 00
Register to write – low order bits xx 00
Register value to write – high order bits xx 00
Register value to write – low order bits xx 00
CRC low order bits xx 8C
CRC high order bits xx 5C
Table D-6: Format for Modbus Command 06
Example Command
This command writes to a Power Patrol with an address switch setting of 37 hex (55 in decimal), writing
one byte at register 000C, and writing a value of 00 to clear the KWH registers. The data value of 0 is
sent to register 0. Note that offset 0 corresponds to Modbus register 40001. The CRC is 5C8C. All values
are hexadecimal.
Example Request
Field Name
Command
(Hex)
Response
Field Name
Response
(Hex)
Power Patrol address 37 Power Patrol address 37
Command number 06 Command number 06
Register to write – high order bits 00 Register written to – high order bits 00
Register to write – low order bits 00 Register written to – low order bits 00
Register value to write – high order bits 00 Register value written – high order bits 00
Register value to write – low order bits 00 Register value written – low order bits 00
CRC low order bits 8C CRC low order bits 8C
CRC high order bits 5C CRC high order bits 5C
Table D-7: Format for Modbus Command 03
Command: 3706000000018C5C
Response: 3706000000018C5C
The response is from the Power Patrol at address 37. One byte was written to at the requested register,
0000. The value written was 0000. The CRC value was 5C8C. An echo of the original command after the
contents are written is a valid response.