Metrohm 750 Autosampler - Manual (Page 55)

5 Appendix
750 Autosampler
52
T2 (output signal for freely programmable event)
Contact closure between connections 7 and 8 (normally open) and 7
and 9 (normally closed) according to the time laid down in the method
"
Event2 Time
". The contact closure time can be set under "
SYSTEM
SETTINGS /Contact Closures/Event 2
" between 1 … 32000 s. This signal
can be used for controlling external instruments.
T3 (output signal for freely programmable event)
Contact closure between connections 10 and 11 (normally open) and
10 and 12 (normally closed) according to the time laid down in the
method "
Event3 Time ". The contact closure time can be set under
" SYSTEM SETTINGS /Contact Closures/Event 3 " between 1 … 32000 s.
This signal can be used for controlling external instruments.
EXTERNAL INJECT INPUT (input signal for external injection start)
If a contact closure is made by an external instrument between connec-
tions 13 and 14 then the Autosampler will regard this as a starting sig-
nal for the injection of a new sample. A precondition for this is that the
run time "
Run Time
" in the method has been set to "
0.0
". In this case the
run time will be determined externally.
GND (ground 0 V)
An output signal of 0 V is present between connections 14 and 16.
+5 VOLTS OUTPUT (output signal +5 V)
Between connections 15 and 14 or 16 an output signal of +5 V is pro-
vided which can be used in combination with a contact closure for ex-
ternal instruments which require a +5 V impulse for activation.
REMOTE STOP INPUT (input signal for stop)
If a contact closure from an externally connected instrument is made
between connections 16 and 17 then the Autosampler will be stopped.
The instrument remains in this condition until the contact is again inter-
rupted. On the Autosampler the same display then appears as if the
stop had been made with the <RUN/STOP> key (see chap. 3.6).
READY INPUT (input signal for operation interruption)
The "Ready" signal provided at connection 18 is internally set to "high".
If it is set to "low" by an externally connected instrument then the current
Autosampler actions will be interrupted until the signal is reset to "high".