Operating instructions

3-24 Installation
9. PC40 Remote
Communications Installation
The following information is provided if you will be using a remote
device
to se lect active memory and/or lock out input through the PC40
user interface.
Remote connections are made to
PC40 terminal block P1 (Figure 3.9).
Signals connected to P1 are optically isolated from the remote system.
The opto-isolators can be turned
on by either current sourcing or
current sinking devices.
Remote Pin Characterization
Table 3 ~ 9 - Remote Communication Pin Characterization
Pin
P1-1 ("Shield")
P1-2 ("Ground")
P1 -3 ("Common")
Pl-4 ("lock")
P1-5 ("Remote
Memory Select 3")
P1 -6 ("Remote
Memory Select 2")
P1-7 ("Remote
Memory Select 1 ")
P1-8 {"+1 2V")
PIN 10838 9A
57 -28 11!13
Function
Provided for field wiring convenience.·
Provided for field wiring convenience.
Provides for one half of the connection for
all of the opto
-i solators.
Provides for a remote signal to disallow
access to the PC40 Program Mode.
Provides con ne ction to allow a remote
devi
ce to change the active memory.
Provides connection to allow a remote
device to change the active memory.
Provides connection to allow a remote
device to change the active memory.
Provides 12 VDC input power for any
remote
dev ice that requires it.
Comments
Connected
to the remote device 1/0
printed circuit board.
Connected
to the remote device 1/0
printed circuit board.
For sourcing
(PNP) devices, P1-3 should
be connected to
P1-2 ("Ground"). For
sinking
(NPN) devices, P1-3 should be
connected
to P1-8 ("+12V").
Maximum current available from pin P1 -8
is 500 mA.This is the maximum current
available for
all connections to pin P1 -8
including loads on other PC40 connectors.
C N ord son Corporation 1993
All R 1g ~ ts Reserved