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Flexibility, a major advantage
that permits the 1710
Control System
to meet individual customer
require-
ments,
is
achieved
through the installation
of an-
nounced special features and additional
units.
A
mini-
mum
1710
Control System
may be
installed for existing
needs, and the installed system
may be
altered as con-
trol requirements change
to provide new
functions and
increased cap
abilities. This
section
describes the 1710
special features and
additional units. The publication
IBM
1710 System
Configuration
(Form
G26-5693)
shows
all special features and additional
units
and their pre-
requisi
tes.
Four types of terminal
blocks
are available for
in-
stallation in the
1712 Multiplexer
and
Terminal
Unit:
Standard Terminal
Block, Thermocouple Terminal
fi
gure
9. Terminal Block
1710 Special Features
and Additional Units
Block, Interrupt
/
Process Branch Indicator Terminals,
and
Contact Sense Terminal Blocks.
Standard Term inal Block
The
standard
terminal block (Figure 9) may be used
to
connect
Analog Input, Contact Operate,
and
Analog
Output functions. The following rules must be
ob-
served,
however:
Contact
Operate
and
Analog Output functions may
be
connected on
the
same
block. In order to minimize
undesirable
stray voltage effects,
Analog J nput func-
tions
must be located
on a
block
containing only
An-
alog
Input
functions
.
Analog
Output
functions
require two
addresses
for
each analog output channel.
In
addition,
two
addresses
must be
assigned
for
control of
the slew
and trim
oper-
ations.
Fifty terminal
addresses or
100 terminals
are
pro-
vided
for
customer
connections
on
each block.
Analog
Input terminations
other
than thermocouple
terminations
can
be made on a thermocouple terminal
block. Analog Output
and
Contact Operate termi-
nations can
only
be made
on a standard
terminal block.
Interrupt/
Process Branch
Indicator Terminals
This terminal block is used to terminate the 12
Ex-
ternal
(process)
Interrupts,
and
the 20 Process Branch
I ndica tors.
15
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