Functions of Components
IPC-BX/M560(PCW)
64
* 013Ch: Port protect control
W
D6
D5
D4
D3
D2
D1
D0
D7
WP6
WP5
WP4
WP3
WP2
WP1
WP0
WP7
Figure 5.17. Port Protect Control Port (013Ch)
W
: Protects the general-purpose I/O port (0138h).
This port protects and unprotects the general-purpose I/O
port. The general-purpose I/O port is protected when the
power is turned on and when a reset occurs.
00h : Protect
A5h : Unprotect
External I/O circuits
4.7k
Ω
External
power supply
(12~24VDC)
Input
contact
(PCOM)
(PI 0~2)
RAS connector
(External circuit)
PC817
Internal reset
(IN)
10k
Ω
Figure 5.18. Input Circuit
(PO 0~2)
(NCOM)
External
power supply
(External circuit)
RAS connector
PC817
Load
4.7k
Ω
(Max. 30VDC)
4.7k
Ω
2N3904
Figure 5.19. Output Circuit
Содержание IPC-BX/M560
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