ISON IS-DS5150, User Manual

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15(0x0F) Force Multiple Coils (Write DOs)
This function code is used to set multiple coils status or write multiple digital output values.
[Request]
Byte Description Size Value
00 Net ID (Station Number) 1 Byte 1 to 247
01 Function Code 1 Byte 0x0F
02-03 Starting DO Address 2 Bytes
Refer to the Modbus address depends on your slave
device for more details.
Byte 02 = high byte
Byte 03 = low byte
04-05
Number of Output Channels
(Points)
2 Bytes
Byte 04 = high byte
Byte 05 = low byte
06 Byte count 1 Byte
n = (7)/8
07 Output value n Bytes
A bit corresponds to a channel. A value of 1 for a bit
denotes that the channel is ON, while a value of
denotes that the channel is OFF.
n= 1; Byte 07 = data bit 7 to 0
n= 2; Byte 08 = data bit 15 to 8
.......
n= m; Byte m+6 = data bit (8m-1)to 8 (m-1)
[Response]
Byte Description Size Value
00 Net ID (Station Number) 1 Byte 1 to 247
01 Function Code 1 Byte 0x0F
02-03 Starting DO Address 2 Bytes
The value is the same as Bytes 02-03 of the
Request
04-05
Number of Output Channels
(Points)
2Bytes
The value is the same as Bytes 04-05 of the
Request
[Error Response]
Byte Description Size Value
00 Net ID (Station Number) 1 Byte 1to 247
01 Function Code 1 Byte 0x8F
02 Exception Code 1 Byte
Refer to the Modbus Standard Specifications for
more details.