184 1260 Infinity QuatPump VL User Manual
12 Hardware Information
Interfaces
• input load is 2.2 kOhm against + 5.0 V, and
• output are open collector type, inputs/outputs (wired- or technique).
Special Interfaces
Some modules have module specific interfaces/connectors. They are described
in the module documentation.
All common TTL circuits operate with a 5 V power supply. A TTL signal is defined as "low"
or L when between 0 V and 0.8 V and "high" or H when between 2.0 V and 5.0 V (with
respect to the ground terminal).
Tabl e 12 Remote Signal Distribution
Pin Signal Description
1 DGND Digital ground
2 PREPARE (L) Request to prepare for analysis (for example, calibration, detector
lamp on). Receiver is any module performing pre-analysis activities.
3 START (L) Request to start run / timetable. Receiver is any module
performing run-time controlled activities.
4 SHUT DOWN (L) System has serious problem (for example, leak: stops pump).
Receiver is any module capable to reduce safety risk.
5Not used
6 POWER ON (H) All modules connected to system are switched on. Receiver is any
module relying on operation of others.
7 READY (H) System is ready for next analysis. Receiver is any sequence
controller.
8 STOP (L) Request to reach system ready state as soon as possible (for
example, stop run, abort or finish and stop injection). Receiver is any
module performing run-time controlled activities.
9 START REQUEST (L) Request to start injection cycle (for example, by start key on any
module). Receiver is the autosampler.
To Next Page
Loading...
