User Guide
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11 Interfacing with the SERIES 2000
11.1 Connection Options
11.1.1
The S2000 is designed to be fully automated both quickly and easily via PLC
control or computer control using the RS-232 port. All of the advanced features
ensuring process control and curing repeatability can be accessed through built
in standard optically isolated I/O signals. In addition to a foot pedal jack, there
are two PLC compatible I/O connectors that are 15 pin DE style (P1 & P2), the
RS-232 port is a D-Sub 9-position socket (P3). One RS-232 9 pin cable has
been provided with the unit to expedite implementation.
11.1.2
Additionally, a stereo phono connector is available for a simple RS-232
radiometer connection on the side of the front panel.
11.1.3
The PLC I/O’s, foot pedal and RS-232 port are optically isolated from the
control S2000 control electronics. This has been done in order to maximize the
S2000’s immunity to noise and minimize its noise output. Even the analog
inputs and outputs (intensity monitor output and intensity control input) are
optically isolated from the control circuitry.
11.2 Input/ Output Signals and Descriptions
11.2.1
Output Signals
an output signal is said to be active when the output is ON
a signal is said
to be ON when the transistor side of it’s respective optocoupler is
conducting current
the description of current conduction is dependant upon its’ end configuration,
selectable by the user
an output can be configured as active high in which case the transistor is
sourcing current, or active low in which case the transistor is sinking current
The "digital" outputs have the following characteristics:
>polarized type, output device:
optocoupler, NPN transmitter
>logic Level:
uncommitted emitter and collector can be
used as active high or active low
>maximum voltage withstand:
30VDC capability (Vce):
>maximum carry current:
8 mA
Note:
Refer to the following page for examples of output signal circuit
configurations.
Note:
a signal is said to be active when the transistor side output of the
optocoupler is on/conducting and inactive when the transistor side of
the optocoupler is off.
