User`s manual

286
11.4 Data Transmission
This section explains the arrangement of the transmission data and transmission procedure when transmitting data
using a user frame.
11.4.1 Send data
The following describes the data list, codes, and handling of the Q series C24 send data during user frame data
transmission.
(1) Send data list
Only the data list combinations shown below are allowed during user frame data transmission.
*1 Four bits of 0H to FH data are converted to 30H to 39H and 41H to 46H ASCII data and transmitted as the data codes of
the data to be transmitted (including the transparent code data).
*2 Send data arbitrary data area
• When the send data count designated by the programmable controller CPU during transmission in byte units is an
odd number of bytes, the data of the lower byte of the last send data storage location of the send data storage
area are transmitted.
• When ASCII-BIN conversion is enabled, the data to be transmitted is transmitted as 2 characters/byte.
¨
¨
¨
¨
¨
¨
¨
¨
¨
*2
*1
User frame
(first n frames)
Arbitrary data area
User frame
(last m frames)
Added by the Q series C24.
00H to FFH
00H to FFH
: Designated data exists
(When ASCII-BIN conversion enabled)
User frame (first n frames) User frame (last m frames)
Arbitrary data area
(Send data designation area data)
Transmission area data.
Added by the Q series C24.
The codes shown at the left
are 4-bit codes.
0H to 9H, AH to FH
0H to 9H, AH to FH
Transmission area data.
The codes shown at the left at
are 4-bit codes.
Combination
Data name
1)
2)
3)
4) Total 100 frames
Total 99 frames
Note
Note
Codes that can
be designated
(When ASCII-BIN conversion disabled)
Codes when
transmitting
Codes that can
be designated
Codes when
transmitting
Note
30H to 39H,
41H to 46H
30H to 39H,
41H to 46H