User`s manual

PK2100
B-6 s Appendix B: Specifications
Table B-5. PK2100 Header J4 Connections
Pins Description
2-3 Place PK2100 in programming mode at 38,400 bps.
6-7 Run PK2100 program in RAM.
7-8
Place PK2100 in programming mode at 19,200 bps. Is
equivalent to “no jumper connected.”
Table B-4. PK2100 Header Connections
Header Pins Description
H5
7-8
Connect to engage 4–20 mA load resistor (430 Ω)
from universal input 6 to ground.
1-2
Connect to enable the second RS-232 output (at the
expense of RS-485 output). The output pin will be
TX–. The RS-232 input will be RX– and RX+
must be tied to ground.
H8
3-4,
5-6
Connect 3-4 and 5-6 to enable the termination and
bias resistors for RS-485 communications.
H6–H4 For universal inputs 1–6 connect H6-n to H4-n to engage
excitation resistor (3.3 kΩ) to +10 V reference.
H5–H6 For universal inputs 1–6 connect H5-n to H6-n to engage pull-
down resistor to ground (4.7 kΩ).
Header J4 is a program-read header that overrides the keypad. Software
conventions work with the various jumper connections listed in Table B-5.