Modes Of Operation - Renishaw MP12 Manuel D'installation Et D'utilisation

1-20
The MP12 probe state will be either:
1. Standby mode – the OMP uses a small
current, while passively waiting for the switch-
on signal, or
2. Operating mode – activated by one of the
methods described below. Probe signals are
only transmitted during the operating mode.
SWITCH-ON
MP12 power on/ off
MP12 optical on/off only occurs
when the MP12 is located within
the switch on/off envelope of the
OMM/OMI.
Switch-on options are selected by
MI 12 or OMI switch settings – see
MI 12 or OMI handbook.
1. Manual start (optical-on) –
MI 12 start button.
2. Machine start (optical-on) –
optical switch-on via software M
code command – factory set.
3. Auto start (optical-on) causes
the system to send an optical
start signal once every second
and does not require a machine
control input.
Note: Auto start should not be
selected when the MP12 is set
to the optical-on/optical-off
option.
MODES of OPERATION – see switch settings page 1-32
Switch-off options are selected by an internal probe switch –
see page 1-32.
1. Optical-on and timer-off (timeout) factory set.
A timer switch automatically returns the probe to the standby
mode after 33 or 134 seconds. The timer is factory set to 134
seconds. The 33 second option is selected by re-setting the
internal probe switch. The timer is reset for a further 33 or 134
seconds each time the probe triggers during the operating
mode.
Note: A start signal received during the time the probe is on
also resets the timer for a further 33 or 134 seconds.
If the probe does not time out, check if it is in the optical-on
optical-off mode.
2. Optical-on and optical-off optional
Optical switch-off is commanded by a software M code.
Debounce time
When the probe is switched on, there is a 5 second delay
before it can be switched off.
There is a 5 second delay before the probe can be switched
back on.
MI 4 interface unit
Systems using the earlier MI 4 interface in
place of the MI 12 interface will only operate
in the optical-on/timeout mode. The MI 12
operates either optical-on/timeout or
optical-on/optical-off modes
SWITCH-OFF