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“LS Ubiquitous RF-ID System”
송신 프레임
ACK
프레임
NACK
프레임
송신 프레임
Data 프레임
송신 프레임
수신 프레임
송신 프레임
송신 프레임
수신 프레임
정상 동작한 경우
비정상 동작한 경우
[표 4.2.1.1] 참조
[표 4.2.1.4] 참조
[표 4.2.1.1] 참조
[표 4.2.1.6] 참조
정상 동작한 경우
비정상 동작한 경우
[Fig. 4.2.1.2] Basic communication mode (in case of ACK Enable)
(Note. In case that ACK frame is Enable, ACK frame is sent but in case of ACK Disable, Data Frame
or Error Frame shall be sent without ACK frame.)
[Table 4.2.1.1] shows the basic sending frame structure and [Table 4.2.1.2] shows the
description of each items consisting of sending frame.
[Table 4.2.1.1] Sending Frame Structure
No.
1
2
3
4
5
6
7
Des-
cription
Start
Byte
(F0)
Station ID
(SID)
Length
(DL)
Control
Mode
CMD Determined
by
Command 1,2
Check Sum
(CS)
Normal operation
Sending frame
Refer to [Table 4.2.1.1]
Receiving frame
Refer to [Table 4.2.1.4]
Normal operation
Abnormal operation
Abnormal operation
Sending frame
Refer to [Table 4.2.1.1]
Receiving frame
Refer to [Table 4.2.1.6]
Data frame
NACK
frame
Sending frame
Sending
frame
ACK frame
Sending frame
Summary of Contents for LGRF-H
Page 23: ...23 70 LS Ubiquitous RF ID System 2 4 Product Appearance and Dimension Fig 2 4 1 LGRF H Reader...
Page 24: ...24 70 LS Ubiquitous RF ID System Fig 2 4 2 LGRF H Reader Fig 2 4 3 Antenna A Type...
Page 25: ...25 70 LS Ubiquitous RF ID System Fig 2 4 4 Antenna B Type Fig 2 4 5 Antenna C Type...
Page 70: ...70 70 LS Ubiquitous RF ID System 2 Example of MELSEC PLC ASCII mode communication...
