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FnIO MODBUS Adapter NA-9171, NA-9173
FnIO S-Series
Copyright(C) CREVIS Co.,Ltd Support +82-31-899-4599 URL : www.crevis.co.kr
6.2.5.
5 (0x05) Write Single Coil
This function code is used to write a single output to either ON or OFF in a remote device. The requested ON/OFF
state is specified by a constant in the request data field. A value of FF 00 hex requests the output to be ON. A value
of 00 00 requests it to be OFF. All other values are illegal and will not affect the output.
Request
Field name
Example
RTU
ASCII
ASCII (bus line)
Start of Frame
-
t1-t2-t3
“,”
0x3A
Slave Address
0x07
0x07
“07”
0x30, 0x37
Function Code
0x05
0x05
“05”
0x30, 0x35
Starting Address Hi
0x10
0x10
“10”
0x31, 0x30
Starting Address Lo
0x01
0x01
“01”
0x30, 0x31
Quantity of Outputs Hi
0xFF
0xFF
“FF”
0x46, 0x46
Quantity of Outputs Lo
0x00
0x00
“00”
0x30, 0x30
Error Check (CRC/LRC)
-
0xD9, 0x5C
“E4”
0x45, 0x34
End of Frame
-
t1-t2-t3
CR, LF
0x0D, 0xA
Response
Field name
Example
RTU
ASCII
ASCII (bus line)
Start of Frame
-
t1-t2-t3
“,”
0x3A
Slave Address
0x07
0x07
“07”
0x30, 0x37
Function Code
0x05
0x05
“05”
0x30, 0x35
Output Address Hi
0x10
0x10
“10”
0x31, 0x30
Output Address Lo
0x01
0x01
“01”
0x30, 0x31
Output Value Hi
0xFF
0xFF
“FF”
0x46, 0x46
Output Value Lo
0x00
0x00
“00”
0x30, 0x30
Error Check (CRC/LRC)
-
0xD9, 0x5C
“E4”
0x45, 0x34
End of Frame
-
t1-t2-t3
CR, LF
0x0D, 0xA
-
Output bit of address 0x1001 turns ON.
