User`s manual

PK2100
I/O Configurations s 3-3
Figure 3-2. PK2100 Block Diagram
The connector labeled +10-V ref is nominally 7 volts for the PK2110/
PK2130 12-volt versions of the PK2100. The connector labeled DC in
is 12 or 24 volts, depending on the specific PK2100 model.
Figure 3-2 shows a PK2100 block diagram. The PK2100s board layout
and schematic are included in this manual.
The PK2100 has the following input/output interfaces:
1. Six universal inputs that may be used as analog inputs (to measure
voltage, current, or resistance) or as digital inputs (to measure a
voltage compared to a specific threshold voltage or to software-
specifiable high and low thresholds). The universal inputs accept 0
10volts with 10-bit resolution.
2. Seven digital inputs with a 2.5-volt threshold. Three of the inputs are
dual-purposethey function either as general-purpose digital inputs or
as counter inputs. When serving as counter inputs, the three inputs
provide two counter inputs capable of counting pulses at 100 kHz or
more. The counter inputs can also be used to measure pulse widths
and other pulse timing characteristics.
Gain
Input
High-
U1
U2
U3
U4
U5
U6
Universal
Inputs
A/D+
A/D
O1
O2
O3
O4
O5
O6
O7
K










O8
O9
O10
UEXP
DAC
DAC Output
D1
D2
D3
D4
D5
D6
D7
LCD & Keypad
C2B
C2B+
C1A
C1B
C2A
NC1
NO1
NC2
NO2
Digital
Input
High-
Current
Digital
Output
Counter Inputs
High-
Current
Digital
Output
Z180
RAM
EPROM
EEPROM
Real-Time Clock
Battery
PLCBus
Expansion
Rx
Rx+
Tx
Tx+
Beeper
COM1
COM2
RS-485/RS-422
DC in
Relay 1
Relay 2
RS-232