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section level 1 1
figure bi level 1
table_big level 1
restart lowapp ARestart oddapp: ARestarts for autonumbers that do not restart in
each chapter. figure bi level 1, reset table_big level 1, reset chap_big level 1, reset1
Lowapp Alwbox restart evenap:A1app_big level 1, resetA figure_ap level 1, reset
table_ap level 1, reset figure level 1, reset Figure 1. table level 1, reset Table 1.
these restarts oddbox reset: 1evenbox reset: 1must be in the header frame of
chapter 1. a:ebx, l 1 resetA a:obx:l 1, resetA a:bigbx level 1 resetA a:ftr level 1 resetA
c:ebx, l 1 reset1 c:obx:l 1, reset1 c:bigbx level 1 reset1 c:ftr level 1 reset1
Reminders for autonumbers that need to be restarted manually (first instance will
always be 4) let_in level 1: A. B. C. letter level 1:A.B.C. num level 1: 1. 2. 3.
num_in level 1: 1. 2. 3. rom_in level 1: I. II. III. roman level 1: I. II. III. steps level 1:
1. 2. 3.
1
Chapter 1 Introduction
This chapter describes the Series 90 –70 Remote I/O Scanner (IC697BEM733) and
other equipment that may be used with it. It discusses Genius bus operation as it
relates to the Remote I/O Scanner, and describes how the Remote I/O Scanner can be
used in Genius redundancy systems.
Overview
The Remote I/O Scanner is an intelligent module which mounts in a remote Series
90–70 rack, and interfaces Series 90–70 modules to a Genius bus.
The Genius bus connects the Remote I/O Scanner to a Bus Controller in the host PLC
or computer. Additional remote drops, Genius blocks, Bus Controllers, and
Hand–held Monitors can be attached to the same bus.
REMOTE DROP
A
S
C
N
N
E
R
BUS
CONTROLLER
CPU
a42453
COMMUNICATIONS
BUS
HAND–HELD
MONITOR
I/O BLOCKS
P
S
The Remote I/O Scanner can send up to 128 bytes of inputs from input boards in its
remote drop to the CPU, and can provide up to 128 bytes of outputs from the CPU to
output boards in the remote drop. The amount of data transferred is configurable.
Individual I/O circuits in the remote drop can be:
Forced and unforced from a Hand–held Monitor or the application program logic.
Overridden from a PLC application program.
Toggled from a Logicmaster 90–70 programmer.
The Remote I/O Scanner can be used in CPU redundancy (dual controller) and bus
redundancy (dual bus) systems.
The Host CPU
The Remote I/O Scanner is ideally suited for use in a Series 90–70 PLC system.
However, any type of PLC or computer capable of controlling a Genius bus can be
used as the host. Suitable hosts include Series Six PLCs, Series Five PLCs, and
computers equipped with a PCIM (Personal Computer Interface Module), QBIM
(Q–Bus Interface Module), or a third–party GENI–based interface.