Default Registration Frame (Read Only) - Mitsubishi Electric MELSEC iQ-R Series User Manual

Default registration frame (read only)

This frame is registered in C24 in advance and can be used in the same way as the other user frames.
Overview
The default registration frame is registered in the operating system ROM of C24.
The one-byte data (code: 01H to FEH) and a maximum of five-byte data is registered, and can be used for read-only. (Frame
No.: 1H to 3E7H)
Each of these frames is treated as a user frame.
Default registration frame registered data and data contents transmitted and received
The codes of the registration data for default registration frame and the data contents that are transmitted and received are
shown below.
Default registration frame No.
(HEX (DEC))
1H(1)
2H(2)

FEH(254)
FFH(255)
100H(256)
101H(257)
102H(258)
103H(259)
104H(260)
105H(261)
106H(262)
107H(263)
108H(264)
109H(265)

10DH(269)
10EH(270)
110H(272)
111H(273)
113H(275)
114H(276)
116H(278)
117H(279)
119H(281)
11FH(287)
120H(288)

3E7H(999)
*1 The combination of FFH, H in the registered code is used to handle variable data (sum check code, C24 station number, etc.) as
part of the user frame.
The data contents that are transmitted and received and the byte count depend on the code combined with registered code FFH.
For combination of registered code to handle variable data and the data contents transmitted/received, refer to the following section.
Page 251 Variable data
13 CONTENTS AND REGISTRATION OF USER FRAMES FOR DATA COMMUNICATION
258
13.1 User Frame Types and Contents During Communication
Registration data code
(1st byte to nth byte)
01H
02H

FEH

00H
FFH
0DH, 0AH
10H, 02H
10H, 03H
00H, FEH
00H, 00H, FEH
03H, FFH, F1H
03H, FFH, F1H, 0DH, 0AH
(None)
FFH, EEH
FFH, F0H
FFH, F1H
FFH, F3H
FFH, F4H
FFH, F6H
FFH, F7H
FFH, F9H
FFH, FFH
(None)
Registered Frame byte count
byte count
1 1

1 1
1
2 2
2 2
3 3
3 2
5 4
 
2 1
 
Data contents transmitted
and received
Data contents
(Data of code shown at the left)
STX

(Data of code shown at the left)
(For variable data designation)
NUL
(Data of code shown at the left)
CR, LF
DLE, STX
DLE, ETX
(Data of codes shown at the left)
(Data of codes shown at the left)
*1
ETX, sum check code
*1
ETX, sum check code, CR, LF

*1
Sum check code
Registered code FFH data (1 byte)
