DM5210 analog input module 1-6 RTD Embedded Technologies, Inc.
P5 — Analog Input Voltage Range (Factory Setting: 10V)
This header connector, shown in Figure 1-6, lets you select the analog input voltage range. The range is set by
placing the jumper across the pair of pins labeled 10V, giving you a 10 volt range, or by placing the jumper across
the pins labeled 20V, giving you a 20-volt range. Note that when you place a jumper across 20V, you must place the
jumper on P6 across the +/- pins (bipolar range of -10 to +10 volts). The + setting on P6 cannot be used with 20V.
P6 — Analog Input Voltage Polarity (Factory Setting: +/- (Bipolar))
This header connector, shown in Figure 1-6, lets you select the analog input polarity by placing a jumper across
the pins l for 0 to +10 volts, or +/- for ±5 or ±10 volts. Note that when you place a jumper across 20V on P5,
you must place the P6 jumper /- (±10 volts). The + setting cannot be used with the 20 volt input range.
Figure 1-6 shows the three possible input voltage configurations for P5 and P6.
Fig. 1-6 — Analog Input Voltage Range and Polarity, P5 and P6
Fig. 1-6a:
Factory Setting, ±5V
Fig. 1-6b: Inputs
Connected for ±10V
Fig. 1-6c: Inputs
Connected for 0 to +10V
P7 — Interrupt Source (Factory Setting: OT2)
This header connector, shown in Figure 1-7, lets you select any one of three signal sources for use in generating
an interrupt. An interrupt source is chosen by placing a jumper across the desired pair of pins. The interrupt sources
available are the A/D end-of-convert (EOC), the output of timer/counter 2 (OT2), and timer/counter external clock 2
(EC2). The interrupt channel for the selected source is set on P3.
+/–
+
10V
20V
P6
P5
+/–
+
10V
20V
P6
P5
+/–
+
10V
20V
P6
P5
Fig. 1-7— Interrupt Source Jumper, P7
EC2
OT2
EOC
P7
P8 — 8255 Port B, Bits 4-7 Pads (Factory Setting: No Connections)
These four pads, shown in Figure 1-8, provide easy access to the top four bits of Port Bin the 8255 PPI. These
bits are available to the user as digital outputs. You can install a header, right angle connector, or use another method
to connect these signals into your circuit. The holes closest to the edge of the board are the ground, and the holes
closest to the bus connector are the signal side. The bottom four bits of Port B are reserved for on-board functions.
P8
PB
Fig. 1-8— Port B, Bits 4-7 Pads, P8
4
5
6
7
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