Emerson Process Management Bristol ControlWave ExpressPAC - Manual (Page 57)

ControlWave ExpressPAC Instruction Manual (CI-ControlWave EPAC)
3.3.6 Non-Isolated High Speed Counter (HSC) / Discrete Inputs (DI)
on TB4 of Process I/O Board
Process I/O board connector TB4 provides interface to two internally
sourced single-ended high speed counter/discrete inputs (HSC1 and
HSC2).
Table 3-8. Non-Isolated High Speed Counter/Discrete Inputs General
Characteristics
Type Number
Supported
Characteristics
High Speed
Counter /
Discrete Inputs
2 on TB4
of Process
I/O board
 Surge suppression and signal
conditioning.
 HSCs can use dry contacts or open
collector field circuits.
 High speed counter switch-selectable
frequency of 10kHz or 300Hz.
 Sourced from 3.3Vdc and switch
selectable for a source current of
200μA (switch SW1-3 = OFF) or
2.2mA (switch SW1-3 = ON). Note:
These switches affect all DIs and
HSCs.
Wiring See Figure 3-2 for wiring diagrams.
Switch Settings See Table 3-2 for details on setting switches.
Software Configuration To use data from these high speed counter/discrete inputs you must
include a CWM_EIO board in your ControlWave project using
ControlWave Designer’s I/O Configurator, and then configure it. See
the ControlWave Designer Programmer's Handbook (D5125) for more
information. That same manual includes an I/O Mapping section that
describes, for advanced users, the I/O map for this board. To read a DI
value, look at the appropriate offset for the _STATE variable for the
board.
Revised Mar-2011 I/O Configuration and Wiring 3-11