92
12 Interface
92
Interface
Chapter
12
e.g.) The value of the moving average filter (address 40007) is changed to 20 (0x0014).
Note that the relative address is 0x06 when writing in the moving average filter.
The response of normal write in is the same as Request.
15 (0x0F) Write Multiple Coils
For slave coils, data of the specified number of coils is changed from a specified address.
When broadcast (0) is specified, coils of all slave devices with the same address are rewritten.
The coil address and new number of bytes for request are specified.
*: N = Number of coils/8, N = N+1 in case division is not possible.
e.g.) ON/OFF of digital zero reset (address 00004) from hold ON (address 00001) is
switched.
[Request]
Function 06
[Response]
Function 06
Start address (HI) 00 Start address (HI) 00
Start address (LO) 06 Start address (LO) 06
Moving average filter
(HI)
00
Moving average filter
(HI)
00
Moving average filter
(LO)
14
Moving average filter
(LO)
14
[Request]
Function 1 byte 0x0F
Start address 2 byte 0x0000 to 0xFFFF
Number of coils 2 byte 0x0001 to 0x07B0
Number of bytes 1 byte N *
Changed data N x 2 bytes
[Response]
Function 1 byte 0x0F
Start address 2 byte 0x0000 to 0xFFFF
Number of coils 2 byte 0x0001 to 0x07B0
[Error response]
Error code 1 byte 0x8F (function +0x80)
Exception code 1 byte 01 or 02 or 03
[Request]
Function 0F
[Response]
Function 0F
Start address (HI) 00 Start address (HI) 00
Start address (LO) 00 Start address (LO) 00
Number of coils (HI) 00 Number of coils (HI) 00
Number of coils (LO) 04 Number of coils (LO) 04
Data bytes 01
(Hold ON to
digital zero reset)
05
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