Type And Format Of Commands; Data Transmission/Reception - Panasonic HL-C2 Series User Manual

5-1-2 Type and Format of Commands

■ Data Transmission/Reception

● Data transmission/reception
This section explains how to set or change various parameters or to confirm
or read measurement values by sending a command from the external host
device to HL-C2.
（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 read (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-C2, is normal.
HL-C2
R
S
Read response communication data
（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-C2, is normal.
HL-C2
R
Request communication data (data settings or operation instruction)
S
Normal response communication data
（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-C2, is abnormal such as data range error or garbled characters.
HL-C2
R
Request communication data (data settings, operation instruction, setting data read)
S
Abnormal response communication data
Request communication data (setting data read)
5-5
Chapter 5 External Communication Control
External host device
External host device
External host device
S
R
5
S
R
S
R