Specifications

PK2100 Series Z-World 530-757-3737 11
U23 8-bit addressable latch, 74HC259
U24
Octal FF w clear, 74HC273
U25
Diff. Bus transceiver, 75176A
U26 7
-chan sinking HC driver, 2003
U27
Opamp, 324
U28
Octal FF w clear, 74HC273
U29 8
-bit DAC
U30
Octal 3-state buffer, 74HC244
U31 8
-bit addressable latch, 74HC259
U32
Comparator, 339
U33 RS232
driver 1488
U34
Diff. Receiver, 75175
U35 7
-chan sinking HC diver, 2003
X1 12
.288 MHz crystal for 6.144 MHz system]
X2 32,768 Hz crystal
Z1 Linear reg, 79L05, –5V
Jumpers and Headers
Headers and jumpers are shown in the drawing below. Pin 1 po-
sitions are indicate by “+” markers.
H1 When connected, a 10K excitation resistor RP6A is connected
between the +
10V reference and the high-gain input AD+.
H5 7-8 Connect to engage 4–20 mA load resistor (430 ohm) from
universal input 6 to ground.
H6 For universal input n (1–6), connect H6-n to H4-n to engage
excitation resistor (
3.3K) to +10 volt reference. Connect H6-n
to H5-n to engage pull-down resistor (4.7K).
H7 Connect jumper to cause differential inputs AD+ and AD– to
be balanced in gain. If H7 is disconnected, the gain is greater
on the
AD+ side so that if both inputs are set to 5 volts, the
output of the operational amplifier is
5 volts. Use this feature
for accepting input from bridges where the taps are nominally
at +
5V.
H8 1-2 Connect to enable a second RS232 output (at the expense
of RS485 output) The output pin will be TX–. The RS232
input will be RX–. RX+ must be tied to ground.
3-4, Connect these positions to enable the termination
5-6 and bias resistors for RS485 communications.
H9 When installed, this connects the on-board battery to relay 1
N.O. contact. Use H9 when a battery self-test circuit is to be
implemented by connecting a switched load to the battery.
H11 Normally installed. Connects “K” to +24V power supply. Dis-
connect only if a separate power supply is to be used for
high-current outputs
O1–O7. In that case, K must be con-
nected to that power supply.
J1 1-2 Connect if using 32K RAM or 128K RAM
2-3 Connect for 256K or 512K RAM
4-5 Connect if using 32K, 64K, or 128K EPROM
5-6 Connect for 512K or 256K EPROM
7-8 Connect for other than 32K EPROM
8-9 Connect for 32K EPROM
12-13 Connect for
64K, 128K, 256K flash EPROM
13-14 Connect for
512K (non-flash) EPROM
J4 This is the operation mode jumper. By software convention,
position
7-8 means “enter programming mode at 19.2K baud.”
Position
6-7 means “run the program in memory.” Position 2-3
means “enter programming mode at 38.4K baud.” J4 overrides
the keypad when a readable jumper is installed.
Z180
RS485
OR
U18
U16
U13
PAL
J7
J11
U34
REL2 REL1
Relay
LED
Relay
U25
RS232
U33
JP1
H8
Buffer
U30
OR
U19
MUX
U7
SW1
X1
691
U10
U28
Flip Flops
U24
DAC
U22
Op-Amps
U27
DAC
U29
HC Driver
U35
Latch
U31
HC Driver
U26
Latch
U23
PLCBus
U3
PLC Bus
U4
J1
J8
U11
U6
MUX
U9
Comp.
U32
Comp.
U21
NOT
U17
MUX
U8
Latch
U14
RTC
U15
Keypad Conn.
Beeper
U12
P2
P1
H1
K1
H5
H6
H4
J4
Flip Flops
Phone
Jack
U5
J3
J9
U20
Battery
F1
JP2
JP3
EE
Reg.
PLC Bus Connector
LCD
H7
H9
H1
EPROM
U1
RAM
U2
D2
D1
Z1
28- / 32-pin positions
28- / 32-pin positions
Figure 4. Parts
Locations