Chapter 5 External communication control
5-5
5
5-1-5
Type and Format of Commands
Transmission/reception sequence
Data transmission/reception
This section explains how to set or change various parameters or to
confirm or load measurement values by sending a command from the
external host device to HL-D3.
(1) Normal sequence to read setting data
The figure below shows the data transmitting/receiving sequence in case
the request communication data instructing setting data load (in this case
the head character of the command on the request communication data is
“R”), which is transmitted from the external host device to HL-D3, is
normal.
(
2
)
Normal sequence to transmit/receive data on data setting or
operation instruction
The figure below shows the data transmitting/receiving sequence in case
the request communication data related to data setting or operation
instruction (in case the head character of the command on the request
communication data is “W”), which is transmitted from the external host
device to HL-D3, is normal.
(
3
)
Abnormal sequence to transmit/receive data
The figure below shows the data transmitting/receiving sequence in case
the request communication data transmitted from the external host device
to HL-D3, is abnormal such as data range error or garbled characters.
External host device
HL-D3
S
R
Normal response communication data (load response communication data)
R
S
Request communication load (setting data read)
External host device
HL-D3
S
R
Abnormal response communication data
R
S
Request communication data (data settings,
operation instruction, setting data read)
External host device
HL-D3
S
R
Normal response communication data (data setting response
communication data, normal execution response communication data)
R
S
Request communication data (data settings, operation command, etc.)
Summary of Contents for HL-D3 Series
Page 9: ...Preface 7 ...
Page 27: ...Preface 24 MEMO ...
Page 43: ...Chapter 1 Before Use 1 16 1 MEMO ...
Page 219: ...Chapter 4 Description of Functions 4 140 4 MEMO ...
Page 298: ...1 Apx Appendix 1 Index 2 ...
Page 304: ......