Hioki RM3545, Инструкция по эксплуатации, Страница: 188 / 364

10.1 External Input/Output Connector and Signals
180
KEY_LOCK
While the KEY_LOCK signal is held ON, all front panel keys (except standby
key and
ENTER (trigger) key) are disabled (key unlock and remote control
cancellation operations are also disabled).
p.126
MUX
The function of the LOAD signal (pins 4, 5, 6, 22, 23, 24) changes depending
on the MUX signal.
p.183
SCN_STOP
Serves as the channel reset signal. This signal is enabled only when the
scan function is set to auto or step.
When the scan function is set to auto:
A scan stop reservation is made when the SCN_STOP signal changes to
ON, and scanning is stopped at the completion of measurement. Measure-
ment starts from the initial channel the next time the TRIG signal turns on. To
prevent erroneous operation, hold the on state for at least 5 ms.
When the scan function is set to step:
When the SCN_STOP function changes to on while the instrument is in the
TRIG signal standby state, the initial channel is measured the next time the
TRIG signal turns on. To prevent erroneous operation, hold the on state for at
least 5 ms.
p.148
BCD_LOW
When used with the BCD output setting, turning the BCD_LOW signal OFF
causes the higher digits to be output. Turn the BCD_LOW signal ON causes
the lower digits and range information to be output.
p.182
LOAD0 to
LOAD5
Selecting the panel number to load and the multiplexer channel and then
inputting the TRIG signal causes the instrument to load the selected panel
and channel number, switch to the channel, and perform measurement.
LOAD0 is the LSB, while LOAD5 is the MSB. For more information, see "(4)
Signal correspondence chart"(p.183).
If LOAD0 to LOAD5 are the same as the previous load operation when the
TRIG signal is input, measurement will be performed once if using external
triggering, but the panel load operation and channel switching operation will
not be performed.
If any of the LOAD signals changes to the enabled state and there are no
changes for an interval of 10 ms, the panel load operation or channel switch-
ing operation will be performed even if the TRIG signal is not input. Do not
change the LOAD0 to 5 signals until load operation and channel switching
operation are complete.
LOAD signals are also enabled when controlling the instrument via communi-
cations (remotely). All key operation is disabled when the LOAD signal for a
valid panel number and channel number is on.
When loading panels or switching channels using commands or key opera-
tion, fix pins 4 to 6 as well as 22 to 24 to either ON or OFF.
When the scan function is set to auto or step, the channel cannot be changed
with the LOAD0 to LOAD5 signals.
If you attempt to switch to the multiplexer while measurement leads are con-
nected to the measurement terminals on the front of the instrument, the ERR
signal will turn on, and you will not be able to make the switch. Disconnect
the measurement leads and switch the LOAD signal again.
p.183
IN0, IN1
The input state can be monitored by using the :IO:INPut? command,
using these pins as general-purpose input pins.
See: Communications Command Instruction Manual on the included appli-
cation disc.