User`s manual

PK220022 s Subsystems
Subsystem Overview
The PK2200 is composed of several subsystems. The following list of
subsystem elements is illustrated in Figure 3-1.
 Processor core
 Protected digital inputs
 High-voltage driver outputs
 Serial communication channels
 Keypad and LCD
Figure 3-1. PK2200 I/O Systems Block Diagram
RS485
HV01
HV02
HV03
HV04
HV05
HV06
HV07
K
PIN09
PIN10
PIN11
PIN12
LCD & Keypad
Z180
RAM
Real-Time Clock
Battery
PLC Expansion
Beeper
HV08
HV09
HV10
HV11
HV12
HV13
HV14
PIN13
PIN14
PIN15
PIN16
PIN01
PIN02
PIN03
PIN04
PIN05
PIN06
PIN07
PIN08
485+
485–
RS232
Flash EPROM
OR
EPROM
EEPROM
Protected
Digital
Inputs
High
Voltage
Digital
Outputs
RS-485
and
RS-232
Serial
Channels
Core
LCD
and
Keypad