up: embedded systems - modbus - commands  
Modbus Commands
Read Coil Status - Function Code 01
What links here?
Request
Field size range of values
slave address 8 bits 0-255
function code 8 bits 01
First Coil to be Read16 bits 
Number of Coils to be Read16 bits 
Error check 16 bitsCRC


Response
Field size range of values
function code 8 bits 01
Number of bytes to follow8 bits 
Coil Datavariable8 coils per byte
Error check 16 bitsCRC


Notes:


Resources
Read Coil Status
embedded systems modbus - read coil status - function code 01
programming:load a bitmap (bmp) file
MC6802 - instruction set - set overflow flag
filename:embedded systems modbus - read coil status - function code 01
filename:embedded%20systems%20modbus%20%2D%20read%20coil%20status%20%2D%20function%20code%2001
last edit:August 31 2014 21:09:44 (3547 days ago)
ct = 1716079877.000000 = May 18 2024 20:51:17
ft = 1409533784.000000 = August 31 2014 21:09:44
dt = 306546093.000000