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Chengdu Ebyte Electronic Technology Co.,Ltd
E851-RTU(4440-ETH) User Manual
Copyright ©2012–2019, Chengdu Ebyte Electronic Technology Co.,Ltd
22
Receive
00 01
00 00
00 07
01
03
04
00 10
00 03
Transmission
identifier
Protocol
identifier
length
element ID
Function code
Return bytes
DI1 count
value
DI2 count
value
4.3.2.1. Clear pulse count value
Function code: 06, write hold register
Address range: 40065 (0x0040)
Note: The lower four bits of the register value represent the DI4, DI3, DI2, and DI1 counts respectively. Writing "1" indicates that the
count is cleared and the pulse count is restarted.
Example:
Clear the pulse count values of DI2 and DI4, and retain the pulse count values of DI1 and DI3. Write value should be 0x0a,
corresponding to the binary value of 0000 1010.
Modbus RTU protocol clear pulse count value:
Transmit
01
06
00 40
00 0a
08 19
Device ModBus address
Function code
Address
Write value
CRC check code
Receive
01
06
00 40
00 0a
08 19
Device ModBus address
Function code
Address
Write value
CRC check code
Modbus TCP protocol clear pulse count value:
Transmit
00 01
00 00
00 06
01
06
00 40
00 0a
Transmission identifier
Protocol identifier
length
element ID
Function code
Address
Write value
Receive
00 01
00 00
00 06
01
06
00 40
00 0a
Transmission identifier
Protocol identifier
length
element ID
Function code
Address
Write value
4.3.2. Switching input DI is automatically reported
The automatic input function of the digital input is to transmit the change value when the switching quantity changes. You can choose
to transmit via RS485 or GPRS, or you can turn off the automatic reporting function.
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