Hioki SW1001, Инструкция по эксплуатации

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41
Scan Operation
4.4 Scan Operation
Scanning is started by the SCAN signal of EXT. I/O or the communication *
TRG
command. The scan
channel is moved forward by the SCAN signal or the
*
TRG
command.
When the channel is the final channel, scanning is completed by the SCAN signal or the *
TRG
command,
and all relay is opened and goes back to the beginning of the scan list. Note that scan operation will not
complete until another SCAN signal or *
TRG
command is input in the final channel state.
Scan operation when the trigger source is set to STEP
SCAN signal or
*
TRG
command
Channel Open
Start
channel
Open
Next
channel
…
Open
Final
channel
Open
Scan complete
CLOSE signal OFF ON
The CLOSE signal is output in pulses. The pulse width can be set using the following command
:
IO:PULSe:TIME <0.001
to
0.100/MIN/MAX/DEF>
. (See p. 102.)
If the next channel is closed before the CLOSE signal pulse reaches the set pulse width, CLOSE
signal pulse will automatically turn off.
Item Communication command
Setting
procedure
*
TRG
Starts scanning and proceeds along the scan channels.
:ABORt
Aborts scan operation and returns to the beginning of the scan
channel.
Setting
example
Executes scanning twice from CH1 of SLOT 1 to CH22 of SLOT 3 .
:SCAN 101:322
:TRIG:SOUR STEP
Advances the scan channel one step at a time using the *
TRG
command (or SCAN signal).
*
TRG
(Repeats for the number of channels.)
*
TRG
Scan operation complete by final channel state.
Scanning is performed again after completion.
*
TRG
(Repeats for the number of channels.)
*
TRG
Scan operation complete by final channel state.
Aborts scan operation and restarts from the beginning.
:SCAN 101:322
:TRIG:SOUR STEP
Advances the scan channel one step at a time using the
*
TRG
command (or SCAN signal).
*
TRG
(Repeats.)
:ABOR
(Aborts scan operation and returns to the beginning of the scan
channel.)
*
TRG
(Repeats for the number of channels from the first channel.)
All channels are open after scanning is stopped.
The following commands are disabled during scanning.
• Setting the connection method
• Setting the shield switching
• Channel switching
• Setting the channel delay
• Setting the scan list
• Setting concerning the EXT. I/O
• Channel control due to CLOSE command
4
Scan Function