User`s manual

224
(Calculation range when transmitting data)
(Calculation range when receiving data)
[Range 1]
• When transmitting: Calculation includes everything from the data following the first frame (first one frame
only when multiple user frames have been specified) to the one immediately before the register code.
(Except the additional code data of the transparent code designation shown in Chapter 12)
• When receiving: Calculation includes everything from the data following the first frame to the one
immediately before the register code. (Except the additional code data of the transparent code designation
shown in Chapter 12)
[Range 2]
• When transmitting/receiving: Calculation includes everything from the head of the message to the one
immediately before the register code. (Except the additional code data of the transparent code designation
shown in Chapter 12)
FFH H
User frame
(1st)
User frame
(2nd)
User frame
("n-1"th)
User frame
("n"th)
Register
code
Range 4
Range 3
Range 1
Range 2
(Calculation range when transmitting data)
FFH
H
User frame
(First frame)
Arbitrary data
User frame
(Last frame)
Register
code
Range 2
Range 1
Range 4
Range 3
(Calculation range when receiving data)