Warnings, Cautions, and Notes
as Used in this Publication
Warning notices are used in this publication to emphasize that hazardous voltages,
currents, temperatures, or other conditions that could cause personal injury exist in this
equipment or may be associated with its use.
In situations where inattention could cause either personal injury or damage to
equipment, a Warning notice is used.
Caution notices are used where equipment might be damaged if care is not taken.
GFL–002
Warning
Caution
Note
Notes merely call attention to information that is especially significant to understanding
and operating the equipment.
This document is based on information available at the time of its publication. While
efforts have been made to be accurate, the information contained herein does not
purport to cover all details or variations in hardware or software, nor to provide for
every possible contingency in connection with installation, operation, or maintenance.
Features may be described herein which are not present in all hardware and software
systems. GE Fanuc Automation assumes no obligation of notice to holders of this
document with respect to changes subsequently made.
GE Fanuc Automation makes no representation or warranty, expressed, implied, or
statutory with respect to, and assumes no responsibility for the accuracy, completeness,
sufficiency, or usefulness of the information contained herein. No warranties of
merchantability or fitness for purpose shall apply.
The following are trademarks of GE Fanuc Automation North America, Inc.
Alar m MasterCIMST ARHelpmatePROMA CROSeries Six
CIMPLICITYGEnetLogicmasterSeries OneSeries 90
CIMPLICITY 90–ADSGeniusModelmasterSeries ThreeVuMaster
CIMPLICITY PowerTRA C Genius PowerTRA CProLoopSeries FiveWorkmaster
Copyright 1992 GE F anuc A utomation North America, Inc.
All Rights Reserved
Content of this Manual
This book is a reference to installing, configuring, and using a GE Fanuc Series 90t–70
Remote I/O Scanner (IC697BEM733).
Chapter 1. Introduction: This chapter describes the Remote I/O Scanner and other
equipment that may be used with it. It discusses Geniust bus operation as it relates to
the Remote I/O Scanner, and describes how the Remote I/O Scanner can be used in
redundancy systems. Chapter 1 also describes configurable features of a remote drop,
and explains configuration methods.
Chapter 2. Installation: Explains how to properly install the components of a remote
drop, including Series 90–70 racks, a Remote I/O Scanner, and other Series 90–70
modules. Chapter 2 also explains how to complete the Genius bus connections and how
to connect a programmer to the Remote I/O Scanner.
Chapter 3. Remote I/O Scanner Operation: Describes the memory and operating
modes of the Remote I/O Scanner, and explains its operation. This chapter also explains
how option modules such as the Programmable Coprocessor Module (PCM) could be
used in a remote drop.
Preface
Chapter 4. Configuration with Logicmastert 90–70: Explains configuration steps
using Release 4 of the Logicmaster 90–70 configuration software.
Chapter 5. Logicmaster 90 Operation with a Remote Drop: Explains how to set up a
Logicmaster 90 programmer to communicate with a remote drop. This chapter also
describes functional differences in LM90 when it communicates with a remote drop.
Chapter 6. Remote Drop Configuration with a Hand–held Monitor: Explains how to
configure a remote drop using a Genius Hand–held Monitor.
Chapter 7. Monitoring and Controlling Remote Drop Data: Explains how the I/O data
for a remote drop can be displayed on a Hand–held Monitor or programmer. Chapter 7
also describes how I/O circuits can be forced, toggled, or overwritten.
Chapter 8. Diagnostics and Fault Clearing: Explains how diagnostic information from a
remote drop can be displayed on a Hand–held Monitor or programmer, and how faults
can be cleared.
Chapter 9. Remote I/O Scanner Datagrams: Describes datagrams that can be sent to a
Remote I/O Scanner. Chapter 9 also shows the format of the Remote I/O Scanner’s
Report Fault datagrams.
Appendix A. Estimating the Maximum Number of Remote Drops for a Bus: Shows
how to roughly estimate how many remote drops can be on a bus with one Bus
Controller, one Hand–held Monitor, no Genius blocks, and no programmed
communications.
Appendix B. Finding the I/O Configuration Data Total of a Remote Drop: Gives
instructions for finding the amount of configuration data needed for the I/O modules in
a remote drop.
iii
Preface
Appendix C. Logicmaster 90–70, Release 3, Series 90–70 PLC Configuration
Instructions: Explains how to complete the PLC portion of the configuration if you are
using Release 3 of the Logicmaster 90–70 software.
Appendix D. Logicmaster 90–70, Release 3, Remote Drop Configuration Instructions:
Explains how to configure a remote drop if you are using Release 3 of the Logicmaster
90–70 software.
Related Publications
For more information, refer to these publications:
Genius I/O System User’s Manual (GEK–90486–1). Reference manual for system
designers, programmers, and others involved in integrating Genius I/O products in a
PLC or host computer environment. This book provides a system overview, and
describes the types of systems that can be created using Genius products. Datagrams,
Global Data, and data formats are defined.
Series 90–70 PLC Installation and Operation Manual (GFK–0262). This book describes
the modules of a Series 90–70 PLC system, and explains system setup and operation.
Logicmaster 90–70 User’s Manual (GFK–0263). Reference manual for system operators
and others using the Logicmaster 90–70 software to program, configure, monitor, or
control a Series 90–70 PLC and/or a remote drop.
Logicmaster 90 Software Reference Manual (GFK–0265). Reference manual which
describes program str ucture and defines program instructions for the Series 90–70 PLC.
Series Sixt
Controller, which interfaces a Genius bus to a Series Six PLC. This book describes the
installation and operation of the Bus Controller. It also contains the programming
information needed to interface Genius I/O devices to a Series Six PLC.
Series Five Bus Controller User’s Manual (GFK–0248). Reference manual for the Bus
Controller, which interfaces a Genius bus to a Series Five PLC. This book describes the
installation and operation of the Bus Controller. It also contains the programming
information needed to interface Genius I/O devices to a Series Five PLC.
Genius I/O PCIM User’s Manual (GFK–0074). Reference manual for the PCIM, which
interfaces a Genius bus to a suitable host computer. This book describes the installation
and operation of the PCIM. It also contains the programming information needed to
interface Genius I/O devices to a host computer.
Bus Controller User’s Manual (GFK–0171). Reference manual for the Bus
We Welcome Your Comments and Suggestions
At GE Fanuc automation, we strive to produce quality technical documentation. After
you have used this manual, please take a few moments to complete and return the
Reader’s Comment Card located on the next page.
Jeanne Grimsby
Senior technical writer
Series 90–70 Genius Bus Controller User’s Manual – July 1992iv
Step 3: Configure the Modules in the Remote Drop148 . . . . . . . . . . . . . . . . . . . .
Step 4: Store the Configuration to the Remote Drop150 . . . . . . . . . . . . . . . . . . .
GFK–0579BSeries 90–70 Remote I?O Scanner User ’s Manual – July 1992
vii
restart lowapp ARestart oddapp: ARestarts for autonumbers that do not restart in
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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.
Chapter1 Introduction
section level 1 1
1
This chapter describes the Series 90t–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 inter faces Series 90–70 modules to a Genius bus.
figure bi level 1
table_big level 1
The Genius bus connects the Remote I/O Scanner to a Bus Controller in the host PLC
or computer. A dditional remote drops, Genius blocks, Bus Controllers, and
Hand–held Monitors can be attached to the same bus.
a42453
S
P
C
S
A
N
N
E
R
REMOTE DROP
CPU
BUS
CONTROLLER
COMMUNICATIONS
BUS
I/O BLOCKS
HAND–HELD
MONITOR
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:
H
Forced and unforced from a Hand–held Monitor or the application program logic.
H
Overridden from a PLC application program.
H
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 (P ersonal Computer Interface Module), QBIM
(Q–Bus Interface Module), or a third–party GENI–based interface.
1
1
Module Description
The Series 90–70 Remote I/O Scanner consists of a single circuit board, with a hinged
door which serves as a faceplate. It occupies one slot in a Series 90–70 I/O rack.
MODULE OK LED
I/O ENABLED LED
BUS B ACTIVE LED
a44761
GENIUS
HAND HELD
MONITOR
CONNECTOR
SERIAL
PORT
RS–422/485
COMPATIBLE
GENIUS
BUS
TERMINALS
MODEL 70
BEM 733
MODULE OK
I/O ENABLED
BUS B ACTIVE
ON = OK, ACTIVE
MODULE FUNCTION
SERIES 90–70
GENIUS BUS
REMOTE I/O
SCANNER
GENIUS
HAND HELD
MONITOR
SERIAL PORT
RS–422/485
COMPA TIBLE
SER1
SER2
SER1A
R
E
D
SER2A
U
N
D
A
SER1B
N
C
Y
SER2B
MODULE
IC697BEM733
LABEL
44A726758–110R02
SHIELD
SHIELD
OUT
SHIELD
IN A
SHIELD
OUT A
SHIELD
IN B
SHIELD
OUT B
IN
BEM 733
The Remote I/O Scanner does not require batteries; the battery holder in the faceplate
is not used.
Series 90–70 Remote I/O Scanner User’s Manual – July 19922
LEDs
Module OK
I/O Enabled
Bus B Active
The Remote I/O Scanner has three LEDs that show through the transparent portion at
the top of the door.
lights to indicate that the module has passed its powerup diagnostic
tests. If this LED flashes, it indicates a problem, as shown in the table
below . If this LED is off, there is a fatal error, which causes the Remote
I/O Scanner to go to stop/faulted mode.
lights when the Remote I/O Scanner is receiving the expected output
data from the CPU. If this LED flashes, it indicates either I/O data is
forced, or a Device Number conflict.
if the Remote I/O Scanner is installed on a dual (redundant) bus, this
LED lights if Bus B of the dual bus pair is the currently–active bus.
The following table summarizes the LED indications.
Module OKI/O EnabledMeaning
OnOnNormal operation
BlinkingOnFault detected
OnBlinkingI/O data forced
Alter nate blinkingAlternate blinkingF ault detected, and I/O data forced
Synchronous blinkingSynchronous blinkingDevice Number conflict
OnOffOutputs not being updated from CPU
OffOffNo power or fatal error
1
Connectors
The front of the module has three connectors:
H
9–pin male D Connector: the upper connector. Used for attaching a Genius
Hand–held Monitor.
H
15–pin female D Connector: the center connector. This connector is an RS–422
compatible RS–485 serial port. It can be used for communicating with a
programmer equipped with the serial version of Logicmaster 90–70, or for
connection to a multidrop communications network.
H
The connector at the bottom of the module attaches the Genius bus terminal strip.
Because the terminal strip is removable, it is possible to service or replace the
Remote I/O Scanner while the rest of the system is operating, without disrupting
bus communications.
3Chapter 1 Introduction
1
Required Equipment
The following equipment is required to use a Remote I/O Scanner.
H
At least one Series 90–70 5–slot or 9–slot remote rack with Power Supply. A
remote drop may include multiple racks and power supplies.
H
If a Genius Hand–held Monitor will be used to configure or monitor a remote
drop, it must be version 4.0 (IC660HHM501G) or later.
H
If Logicmaster 90–70 configuration software will be used to configure the remote
drop, it must be release 3.0 or later:
A. IC641SWP701F (3.5”, 2DD, 5.25” 2S/HD)
B. IC641SWP704C (5.25” 2S/2D)
H
If the parallel version of Logicmaster 90–70 will be used with a remote drop, the
remote drop must include a Bus Transmitter Module (IC697BEM713) for
connection to the programmer.
H
If the remote drop will include more than one rack of modules, a Bus Transmitter
Module (IC697BEM713) one or more Bus Receiver Modules (IC697BEM711), and
appropriate cables are required.
H
For a Series 90–70 PLC
h
The Series 90–70 CPU firmware must be release 2.0 or later.
h
The Logicmastert 90–70 programming and configuration software must be
release 3.0 or later. Catalog numbers are given above.
h
A Series 90–70 Genius Bus Controller, release 3.0 or later. The Bus Controller
must be 4.0 or later for full diagnostics display from Logicmaster 90–70 (see
chapter 8), or for redundancy applications.
H
For a Series Sixt PLC
h
CPU: rev. 105 or later.
h
Logicmaster 6 Programming Software: release 4.02 or later.
h
Bus Controllers: IC660CBB902 or 903, version 1.7 or later.
H
For a Series Fivet PLC
h
CPU: rev . 3.2 (catalog number with E suffix) or later.
h
Logicmaster 5 Programming Software: release 2.01 or later.
h
Bus Controller: any version
H
For a Host Computer
h
PCIM: any version
h
QBIM: any version
Series 90–70 Remote I/O Scanner User’s Manual – July 19924
Parts of a Remote Drop
Together, a Remote I/O Scanner and the modules it serves make up a remote drop on
the Genius bus. The remote drop may consist of one to eight Series 90–70 racks.
1
P
S
S
B
C
T
A
M
N
N
E
R
GENIUS BUS
RACK 0
REMOTE DROP
PSB
RACK 7
R
M
RACK 1
P
B
S
R
M
UP TO 50 FEET
NOTE:
ALL RACKS MUST BE AT THE SAME GROUND POTENTIAL
PSB
RACK 6
R
M
a44875
Multiple R acks
When there are multiple racks, the Remote I/O Scanner must be located in the first
rack (rack 0). To link multiple racks in a remote drop, a Bus T ransmitter (IC697BEM713)
Module in rack 0 is connected to a Bus Receiver Module (IC697BEM711) in the first
expansion rack. Additional racks are also linked via Bus Receiver Modules.
All racks in a remote drop must be at the same ground potential.
Distance Between R acks in a Remote Drop
The maximum total cable length from the first Bus Transmitter to the last Bus Receiver
in a remote drop is 50 feet (15 meters). Since none of the daisy–chained signals (all at
the same ground potential) are broken at a rack, any rack can be independently
powered–down without affecting the operation of the rest of the system.
Data Quantities
Regardless of the number of racks used for a remote drop, the maximum amount of
data for a remote drop is 128 bytes of inputs and 128 bytes of outputs (8 discrete points
represent one byte and 1 analog channel uses 2 bytes).
5Chapter 1 Introduction
1
Î
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Series 90–70 Racks
Any of the following racks can be used in a remote drop:
H
5–slot, panel mount rack (IC697CHS750).
H
9–slot, panel mount rack (IC697CHS790).
H
9–slot, rack mount rack (IC697CHS791).
Each of these racks has an additional, wider slot for a P ower Supply. Rack sizes may be
mixed in a system installation to suit the requirements of your application.
The rack–mount Series 90–70 rack has flanges on the front for mounting on 19–inch
standard instrument rack hardware. The panel–mount racks have rear flanges for
mounting on electrical panels.
WITH OPTIONAL VME J2
BACKPLANE KIT
1.00
(25.4)
CONNECTOR
FOR
POWER
SUPPLY
SPACER
(QTY.4)
SIDE VIEW
I/O TERMINAL
RESTRAINING
STRAP
7.25
(184)
9.14
(232)
CABLE
ENTRANCE
FROM
BOTTOM
REMOVABLE
I/O
TERMINAL
BLOCK
Î
Î
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Î
Î
HINGED
DOOR
11.50
(292)
6.75
(172)
=
(19)
3.00
(76)
1.50
(38)
2.24
(57)
.34
(8.64)
.75
ОООООООООООО
ОООООООООООО
Î
GND
STUD
ОООООООООООО
Î
ОООООООООООО
Î
ОООООООООООО
Î
ОООООООООООО
Î
ОООООООООООО
Î
ОООООООООООО
DIMENSIONS
FOR
5 SLOT RACK
12.60
19.00
(320)
(483)
18.11
(460)
Î
Î
Î
Î
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Î
FRONT VIEW
11.71
(297)
17.04
(433)
10.64
(270)
.25 DIA. (TYPICAL)
DIMENSIONS IN INCHES, MILLIMETERS ARE IN PARENTHESIS
Series 90–70 racks do not require a fan for cooling as long as sufficient space is left
around the rack when it is mounted.
GND
STUD
a42984
Series 90–70 Remote I/O Scanner User’s Manual – July 19926
Series 90–70 Power Supplies
These Series 90–70 Power Supplies can be used in a remote drop:
Power supply selection will depend on the input power and load requirements of the
application. Load specifications for Series 90–70 modules are listed on page 9.
AC power supplies mount in the leftmost slot of a Series 90–70 rack. DC power
supplies can be mounted on the side of the rack or used as freestanding modules. The
DC power supplies require a power supply adapter, which installs in the power supply
slot and is connected to the power supply by a short cable.
7Chapter 1 Introduction
1
Powering Two Racks from a Single Power Source
Except for the 125VDC supply, each of these power supplies can be used to power two
racks if the total current requirement for both racks does not exceed the power
supply’s load capacity. The rack that does not contain the Power Supply must not have
a load greater than 5.2 amps.
Connection from the rack with the power supply to the second rack is made through a
cable (catalog number IC697CBL700) three feet (one meter) in length, which is
terminated at both ends with 9–pin D–connectors. This cable car ries both +5 volt
power and control signals (power sequencing signals only) to the second rack.
INSTALL CABLE
SO THAT THE
INDICATED END
IS SUPPLYING
POWER
TWO
RACK
POWER
CABLE
123456789
POWER
SUPPLY
FACE
PLATE
a42134
FIRST
RACK
SECOND
RACK
Series 90–70 Remote I/O Scanner User’s Manual – July 19928
Series 90–70 Modules for a Remote Drop
The table below lists modules that can be placed in a remote drop, and gives their
catalog numbers, I/O capacities, and loads.
IC697MDL24016120 V A C Isolated, Input, 16 points 0.25
IC697MDL24116240 V A C Isolated, Input, 16 points 0.25
IC697MDL25032120 VAC Input, 32 point 0.35
IC697MDL6503224 VDC Input, 32 point 0.30
IC697MDL65132Input module, negative logic, TTL 0.525
IC697MDL6523212 VDC Pos/Neg Logic Input, 32 points 0.30
IC697MDL6533224 VDC Pos/Neg Logic Input, 32 points 0.30
IC697MDL6543248 VDC Pos/Neg Logic Input, 32 points 0.30
IC697MDL34016120 VAC Output, 16 point 0.25
IC697MDL34116120/240 V A C Isolated 2A Output, 16 points 0.25
IC697MDL35032120 VAC Output, 32 point 0.50
IC697MDL7401624/48 VDC Output, 16 point 0.25
IC697MDL7503224/48 VDC Output, 32 point 0.15
IC697MDL7523212 VDC 0.5A Output, 32 points 0.50
IC697MDL753325/48 VDC 0.5A Neg Logic Output, 32 points 0.50
IC697MDL94016Relay Output 16 points 0.75
IC697ALG2308Analog Input Base Converter 0.80
IC697ALG44016Analog Input Current Expander 0.40
IC697ALG44116Analog Input Voltage Expander 0.40
IC697ALG3204High Level Analog Output, V oltage/Current 1.66
The maximum number of I/O and option modules that can be installed in a remote
drop is 63, which requires eight 9–slot racks. There are two limits that cannot be
exceeded when locating modules in a remote drop:
H
There must not be too many option modules in a remote drop. See “Option
Modules”, below .
H
The configuration data for all the I/O modules in a remote drop must not add up to
more than 4500 bytes. This amount of configuration data will not be reached in
any remote drop where all I/O modules are included in the Remote I/O Scanner’s
configured I/O map. However, it is possible to have I/O modules in a remote drop
configured to use references outside the I/O map, as explained in chapter 3. If the
drop will have some modules configured outside the Remote I/O Scanner’s I/O
map, refer to appendix B.
9Chapter 1 Introduction
1
Analog Modules: The maximum number of analog input modules that can provide
input data to the host is 8; however, there may be additional modules in the remote
drop configured outside the Remote I/O Scanner’s I/O map. The maximum number of
analog input modules that can be configured for a remote drop is 29. Similarly, while
the maximum number of analog output modules that can receive output data from the
host is 16, as many as 54 can be configured for a remote drop.
Option Modules: A remote drop with seven or fewer racks can contain up to 18 GDS
(Graphics Display Coprocessor), or ADS (Alphanumeric Display Coprocessor) modules,
or up to 9 PCM (Programmable Coprocessor) modules with daughterboards. Each
PCM/daughterboard combination counts as two option modules against the total of 18.
The following table shows how many GDS and/or ADS modules can be used with 0 to
9 PCMs.
Total Option Modules in a Remote Drop
Number of PCMs and
Daughterboards
018
116
214
312
410
58
66
74
82
90
Number of GDS and/
or ADS Modules
If there are 8 racks in the remote drop, one less PCM with daughterboard, or two less GDS or
ADS modules are permitted.
Analog Expanders: A remote drop can accommodate up to one analog input module
with eight expander modules. However, the maximum number of expanders that can
pass inputs to the CPU is three, due to the Remote I/O Scanner’s 128–byte input data
limit. If an analog module and three expanders were used, no additional input
modules (either analog or discrete) could communicate with the host from the remote
drop.
Modules Not Supported: A remote drop cannot have any I/O module interrupts, or
bus controllers or other modules that depend on COMREQ instructions for their
operations.
Third–party VME modules cannot be used in a remote drop.
Series 90–70 Remote I/O Scanner User’s Manual – July 199210
Genius Bus
1
The Genius bus is an industrially–hardened Local–Area–Network (LAN). It passes
I/O (control) data and background information (datagrams) between the Remote I/O
Scanner and a Genius bus controller. The communicated data is protected from
environmental interference and corruption in several ways. Each byte is
triply–encoded during transmission, and each message is checksummed with a cyclic
redundancy check (CRC). Embedded intelligence at either end also checks for correct
message length and type.
A Genius bus can support up to 32 devices. Each remote drop counts as one device on
the bus, regardless of the number or type of modules it includes. A bus can serve any
mix of remote drops, I/O blocks, Bus Controllers and Hand–held Monitors, provided
the bus scan time does not exceed 400mS. Typical busses reserve one location for a Bus
Controller and one for a Hand–held Monitor, leaving 30 for additional devices. The
illustration below shows a Bus Controller in a Series 90–70 PLC connected to a Genius
bus with I/O blocks and two single–rack remote drops.
PSC
P
U
Bus Type
Bus Termination
Baud Rate
7500 FEET WITH 16 DEVICES, AT 38.6K BAUD
B
C
3500 FEET WITH 32 DEVICES, AT 153.6K BAUD EXT.
MAXIMUM BUS LENGTH
90–70 REMOTE RACK
S
I
I
I
C
/
/
/
A
O
O
O
N
N
E
R
90–70 REMOTE RACK
S
I
I
I
C
/
/
/
A
O
O
O
N
N
E
R
a44669
I
I
I
I
/
/
/
/
O
O
O
O
I
I
I
I
/
/
/
/
O
O
O
O
Daisy–chained bus cable; single twisted pair plus shield or Twinax.
Fiber optics cable and modems can also be used.
75, 100, 120, or 150 ohm resistor at both ends of electrical bus cable.
Configurable. 153.6 Kbaud standard, 153.6 Kbaud extended,
76.8Kbaud, or 38.4 Kbaud.
Maximum Bus
Length
Maximum Number of
Devices
7500 feet at 38.4 Kbaud, 4500 feet at 76.8 Kbaud, 3500feet at 153.6
Kbaud extended, 2000 feet at 153.6 Kbaud, standard. Maximum
length at each baud rate also depends on cable type. The Genius I/OSystem User’s Manual pro vides a complete list of cable types, showing corresponding bus lengths and baud rates. Greater bus lengths
are possible using sections of fiber optics cable with modems.
32 devices at 153.6 Kbaud standard, 153.6 Kbaud extended, or 76.8
Kbaud. 16 devices at 38.4 Kbaud. Includes Bus Controller and
Hand– held Monitor.
11Chapter 1 Introduction
1
Total Amount of Input and
Total Amount of Input and
Output Data for
Timing
A fully–loaded (128 input bytes and 128 output bytes) remote drop adds at least 20mS
to the bus scan. The table below shows the bus scan time contribution, at each baud
rate, for remote drops with a total of 16, 32, 64, 128, and 256 bytes (fully–loaded),
when the Remote I/O Scanner receives outputs from only one bus controller at a time.
* See below to calculate the exact scan time contribution for the application.
153.6 Kb
std
153.6 Kb
ext
76.8 Kb38.4 Kb
Estimating Bus Scan Time for Remote I/O Drops
The scan time contribution for a remote drop depends on its I/O data usage. Follow
the procedure below to estimate the the scan time contribution of a remote drop.
(Each analog channels is 2 bytes. Eight discrete points are one byte).
1.Find the total number of input bytes and output bytes.
number of input bytes = ________
number of output bytes = ________
total bytes = ________
2.With this total, calculate a scan time contribution using the formula below that
corresponds to the Genius bus baud rate.
Formula for 153.6 Kbaud Standar d:
0.943mS + (0.0715 x total bytes) = ________ mS
Formula for 153.6 Kbaud Extended:
1.015mS + (0.0715 x total bytes) = ________ mS
Formula for 76.8 Kbaud:
1.538mS + (0.143 x total bytes) = ________ mS
Formula for 38.4 Kbaud:
2.583mS + (0.286 x total bytes) = ________ mS
Other devices on the bus, including the Bus Controller, Hand–held Monitor, and I/O
blocks also add to the bus scan time. The Genius I/O System Manual (Volume 1) shows
how to calculate bus scan time based on the devices actually present.
Series 90–70 Remote I/O Scanner User’s Manual – July 199212
Number of R emote Drops on a Bus
The number of remote drops on a bus depends on the baud rate and the total number
of I/O points in the remote drops.
Since the maximum Genius bus scan time is 400mS, and the bus scan time contribution
of one fully–loaded remote drop is 20mS, only twenty fully–loaded remote drops are
supported on a single bus that operates at 153.6 Kbaud. If remote drops are not
fully–loaded, more may be used on a bus operating at these baud rates.
If some remote drops are not fully–loaded, more than the maximum number given
below can be used. The table in appendix A will help you estimate the total number of
remote drops and data bytes that can be accommodated on a bus that has one Bus
Controller, one Genius Hand–held Monitor, no datagrams or Global Data
communications, and no Genius I/O blocks. The Genius I/O System User’s Manual
explains how to calculate the bus scan time for a specific bus.
Maximum Number of Drops per Baud Rate
153.6K baud extended: Up to 20 fully–loaded drops, or up to 30 drops with the total
number of I/O bytes less than the limits listed in the table.
1
153.6K baud standard: Up to 20 fully–loaded drops, or up to 30 drops with the total
number of I/O bytes less than the limits listed in the table.
76.8K baud: Up to 10 fully–loaded drops, or up to 30 drops with the total number of
I/O bytes less than the limits listed in the table.
38.4K baud: Up to 5 fully–loaded drops, or up to 14 drops with the total number of
I/O bytes less than the limits listed in the table.
13Chapter 1 Introduction
1
Redundancy
The Remote I/O Scanner can be used with CPU redundancy, bus redundancy, or both.
The suitability of redundancy features for any system depends on the requirements of
the application. For Series 90–70 PLC CPUs that are release 3 and earlier, some types
of redundancy are not supported.
CPU Redundancy
Genius devices are considered to be controlled by the Bus Controller that sends them
outputs. In CPU redundancy, two Bus Controllers on the same bus can send control
outputs at the same time. The Bus Controllers must use Device Numbers 30 and 31.
BUS
CONTROLLER
(DEVICE 30)
BUS
CONTROLLER
(DEVICE 31)
S
P
C
S
A
N
N
E
R
REMOTE DROP
a44876
Both Bus Controllers automatically receive inputs and fault reports from all devices on
the bus that have been configured as being in “CPU Redundancy“ mode.
How the two sets of outputs are handled by devices that receive them depends on
whether the devices are set up for Hot Standby or Duplex redundancy. Both are
explained below . If the remote drop contains any analog modules, the only form of CPU
redundancy permitted is Hot Standby .
Hot Standby CPU Redundancy
A device configured to be in Hot Standby redundancy mode is normally controlled by
the Bus Controller assigned to Device Number 31. If no outputs are available from that
Bus Controller for a period of three bus scans, the device accepts outputs from the Bus
Controller assigned to Device Number 30. If outputs are not available from either Bus
Controller, outputs go to their configured defaults or hold their last state. In Hot
Standby redundancy, Device Number 31 always has priority, so that when that Bus
Controller is on–line, it has control of the outputs.
Duplex CPU Redundancy
A device configured to be in Duplex redundancy mode compares the outputs it
receives from the two bus controllers, to determine whether they match. If
corresponding outputs are the same, the device sets the output to that state. If
corresponding outputs are not the same, the device sets the output to its configured
ON or OFF Duplex Default State. If either Bus Controller stops sending outputs to a
device, its outputs are directly controlled by the remaining device. Only discrete devices
can operate in Duplex redundancy mode; do not use Duplex mode if the analog drop contains
any analog modules.
Series 90–70 Remote I/O Scanner User’s Manual – July 199214
1
Genius Bus Redundancy
In Genius bus redundancy, there are two bus cables each connected to a Bus Controller.
The device communicates on only one bus at a time. Before the alternate bus can be
use for communications, a bus switchover must occur and the device must “log in“
with the Bus Controller(s) on the alternate bus. Bus switching can be handled by a Bus
Switching Module attached to a Genius block, or by a Remote I/O Scanner
(IC697BEM733 rev. B or later) which contains a built–in bus switching relay. Bus
Switching Modules and Remote I/O Scanners are the only devices that can be directly
connected to redundant bus cables.
Bus Stubs Connect Other Devices to a Dual Bus
Other Genius devices, such as I/O blocks and additional Remote I/O Scanners, can be
interfaced to a dual bus by short lengths of unterminated cable called a bus stubs.
Typical arrangements are shown on the following pages. Up to seven devices can be
installed on a bus stub (plus the device that is connected to the dual bus). Each device
on a bus stub counts toward the total of 32 devices on the Genius bus.
The total length of all bus stubs on a bus should be 100 feet or less. Within each 20%
section of the actual bus length, the total maximum stub length is 20 feet. This can be
divided into shorter stubs, provided that the total length in each 20% of the bus is 20 ft.
or less.
a44976
20%20%20%20%20%
10’10’
20’
COMBINED = 100 FEET MAXIMUM
= REMOTE I/O SCANNER OR
BUS SWITCHING MODULE
20’
20’
For example, for a trunk cable 3000 ft. long, 20% of the trunk cable length is 600 ft.
Therefore, 20 ft. of bus stub cable can be located within any 600 ft. section of the bus.
There might be two 10 ft. stubs with up to 8 devices each, or four 5 ft. stubs, with fewer
devices on each.
15Chapter 1 Introduction
1
Redundant Bus Configuations
Many different redundant bus configurations are possible. Three basic ways of using a
Remote I/O Scanner with a redundant bus are described below.
H
A Remote I/O Scanner can be installed directly on both cables of the dual bus
pair. The Remote I/O Scanner is configured to operate as a bus switching device in
addition to performing its normal remote drop functions.
Here, two single–rack remote drops are installed on a dual bus. The Remote I/O
Scanner in each remote drop would be set up as a bus switching device.
a44974
BUS A
BUS B
RACK 0
P
S
S
C
A
N
N
E
R
P
S
RACK 0
S
C
A
N
N
E
R
A bus stub may be connected to a Remote I/O Scanner that is configured as a bus
switching device, allowing up to seven additional devices to utilize its bus
switching action. Devices on a bus stub are independent Genius devices. When
bus switching is controlled by a Remote I/O Scanner , as shown below, the devices
on the bus stub are not part of the remote drop. Their data does not count toward
the remote drop’s data total.
a44878 RACK 0 RACK 0
P
BUS A
S
S
C
A
N
N
E
R
P
S
S
C
A
N
N
E
R
BUS B
BUS
STUB
UP TO 7 ADDITIONAL DEVICES
Series 90–70 Remote I/O Scanner User’s Manual – July 199216
H
A Remote I/O Scanner can be located on a bus stub. The bus switching device to
which the bus stub is connected can be another Remote I/O Scanner, as shown
below, or a Genius block with a Bus Switching Module attached.
In this example, there are two remote drops installed directly on a dual bus. A
third remote drop and some Genius blocks are installed on a bus stub connected to
one of the Remote I/O Scanners. That Remote I/O Scanner acts as the bus
switching device. A remote drop on a bus stub can accommodate up to 128 bytes
of inputs and 128 bytes of outputs, and may include expansion racks.
1
RACK 0
P
S
S
C
A
N
N
E
R
BUS A
BUS B
P
BUS
STUB
H
Finally, a remote drop can be located on just one bus of a redundant bus pair, if
S
RACK 0
S
C
A
N
N
E
R
P
S
RACK 0
S
C
A
N
N
E
R
a44880
bus redundancy is not needed for the modules in that remote drop.
In this example, the remote drop on the right is connected to both Bus A and Bus
B; the remote drop on the left, which contains non–critical I/O modules, is
connected to Bus A only.
RACK 0
RACK 0
a44877
BUS A
BUS B
P
S
S
C
A
N
N
E
R
P
S
S
C
A
N
N
E
R
17Chapter 1 Introduction
1
Configuration
A remote drop can be fully configured using Logicmaster 90–70, or automatically
configured using a Genius Hand–held Monitor. Differences between the two
methods are explained below. Optionally, a previously–configured remote drop can
be reconfigured using datagrams.
Remote Drop Configuration with Logicmaster 90–70
Logicmaster 90–70, release 3.0 or later can be used to configure a remote drop for any
type of host. Either serial or parallel Logicmaster can be used. For serial Logicmaster,
the connection to the remote drop can be direct, or via a multidrop network. Direct
connection or a Hand–held Monitor is needed to configure the SNP ID of the remote drop, before
multidrop communications with it are possible.
Logicmaster 90–70 release 4.01 or later, which provides reference checking through
the use of a common folder, is preferred for configuring a Series 90–70 PLC with
remote drops. Chapter 4 explains how to configure a remote drop using Logicmaster
90–70 software which is Release 4 or later.
Appendixes C and D give instructions for configuration using Release 3 Logicmaster
90–70 software.
Remote Drop Configuration with a Genius Hand–held Monitor
A Genius Hand–held Monitor , version 4.0 (IC660HHM501G) or later, can be used to
configure a remote drop that does not include Analog Expander modules. If Analog
Expanders are present, Logicmaster 90 must be used for configuration.
The I/O modules in the remote drop cannot be individually configured with a
Hand–held Monitor; they will operate in default mode. HHM configuration
instructions are given in chapter 6.
Configuring a Remote Drop using Datagrams
The configuration of a remote drop can be completed or changed by sending it
datagrams, as shown in the table on the following page. The Write Map datagram will
supply Series 90–70 data types and lengths, and a Series 90–70 SNP ID for the remote
drop.
Series 90–70 Remote I/O Scanner User’s Manual – July 199218
Configurable Features
The following table summarizes configuration options for a remote drop, and
compares them to the PLC configuration required with a remote drop. The remote
drop can be configured, or reconfigured, using Logicmaster 90–70 or a Genius
Hand–held Monitor, or datagrams. If the configuration is not protected, as explained
on the next page, a reconfiguration will replace part or all of an existing configuration,
regardless of the configuration method originally used.
Remote Drop Configuration
Configuration Item
Logicmaster
90–70
Hand–held
Monitor
Datagrams
1
Device Number (SBA)
Series 90–70 References
Data Lengths
Series Six/Series Five References•
Baud Rate
Bus Controller Options:
Input Default
Outputs Enabled
I/O Module Options:
Input Filter Time
Outputs Default
V oltage/Current Range
Analog Expander Modules
PCM*, GDS*, ADS*
Genius Options:
BSM Controller *
BSM Present *
Timeout Select *
CPU Redundancy *
Duple x Default *
Configuration Protection
SNP P ort Options:
SNP ID W rite Map
Baud Rate
Stop Bits
Modem TT
Idle Time
n[n
n[n
n[nn[n
n
nn
nnnnn
nnnnnnnnnn
]n
nnnnn
W rite Map
W rite Map
Remote I/O Scanner Sweep Control:
Programmer Window
Communications Window
[
with release 3 software, PLC configuration must match the remote drop configuration.
• Only for a new Remote I/O Scanner , for which no Series Six/Series Five reference has been entered.
* Not approved for use with Remote I/O Scanner version IC697BEM733A;
upgrade to IC697BEM733B or later .
]
Automatically supplied.
nnnn
19Chapter 1 Introduction
1
Configuration Protection
After configuring a Remote Drop, it is important to prevent inadvertent change while
the system is in operation. For this reason, Logicmaster 90–70 automatically protects
any configuration you download to a Remote I/O Scanner.
A configuration done with a Hand–held Monitor should be protected as described in
chapter 6.
Any Hand–held Monitor used with the system while it is operating should be set up
to prevent undesirable configuration changes:
Protect These Remote Drop Fea -
tures
Device Number (SBA)Change Block ID Disabled
Reference Address
Data Lengths (%I, %Q, %AI, %AQ)
Remote Drop ID
Module Options: Output Defaults
Input Filter T ime V oltage Range
Baud RateChange Block Baud Disabled
Configuration Protection
Redundancy Options *
By Setting this HHM Option
Change Block Config Disabled
*Not available with Remote I/O Scanner version IC697BEM733A.
To prevent access to restricted HHM configuration options, remove the HHM key.
Caution
If configuration protection is removed from the Remote I/O Scanner
and the Hand–held Monitor’s Change Block ID option is
ENABLED, the HHM’s automatic configuration capability can
overwrite any existing I/O configuration, including one created using
Logicmaster 90–70, or downloaded using a Write Map datagram.
This automatic reconfiguration will also set any module options (see
the table above) back to their defaults.
Series 90–70 Remote I/O Scanner User’s Manual – July 199220
Chapter2 Installation
section level 1 1
2
This chapter describes procedures for installing the racks and modules in a remote
drop, grounding equipment, connecting the Genius bus, completing SNP connections,
and attaching a programmer.
Hardware Packaging
Each Series 90–70 rack is shipped in its own carton, without a power supply. The
power supply and all of the Series 90–70 modules are shipped in individual boxes.
When multiple modules are included in one shipment, individual module boxes are
packaged either two, five or ten boxes to a carton.
Verify that all components of the system have been received and that they agree with
your order. If the items received do not agree with your order, call Programmable
Control Customer Service, toll free, in Charlottesville, V A at 1–800–432–7521. A
Customer Service representative will assist you.
figure bi level 1
table_big level 1
Preinstallation Check
Carefully inspect all shipping containers for damage during shipping. If any part of
the system is damaged, notify the carrier immediately. The damaged shipping
container should be saved as evidence for inspection by the carrier.
As the consignee, it is your responsibility to register a claim with the carrier for damage
incurred during shipment. However , GE F anuc will fully cooperate with you, should
such action be necessary.
After unpacking the Series 90–70 PLC racks, modules, and other equipment, record all
serial numbers. Serial numbers are required if you should need to contact Product
Service during the warranty period of the equipment. Complete all software product
registration cards, and return them to to GE Fanuc.
All shipping containers and all packing material be saved should it be necessary to
transport or ship any part of the system.
21
2
System Grounding Procedures
All components of a control system and the devices it is controlling must be properly
grounded.
H
Ground conductors should be connected in a tree fashion with branches routed to
a central earth ground point. This ensures that no ground conductor carries
current from any other branch. This method is shown in the figure shown below.
H
Ground conductors should be as short and as large in size as possible. Braided
straps or ground cables (typically green insulation with a yellow tracer – AWG
#12 or larger) can be used to minimize resistance. Conductors must always be
large enough to carry the maximum short circuit current of the path being
considered.
SERIES 90–70
PLC CABINET
PROGRAMMING
DEVICE
RACK
RACK
MOTOR DRIVES
AND
OTHER
ELECTRICAL
CONTROL
EQUIPMENT
a42942
MACHINERY
EARTH
GROUND
CENTRAL
GROUND POINT
NOTE
SIGNAL AND POWER
CONNECTIONS
NOT SHOWN
Series 90–70 Remote I/O Scanner User’s Manual – July 199222
Rack Installation
Î
Î
Install the rack(s) in the orientation shown below. The illustration shows a 9–slot rack,
but a 5–slot rack could be used.
Series 90–70 PLC racks may be rack or panel mounted, depending on version
ordered. Rack dimensions for installation purposes are shown below.
The Series 90–70 rack does not require a fan as long as sufficient space is left around
the rack for cooling airflow .
WITH OPTIONAL VME J2
BACKPLANE KIT
1.00
(25.4)
SPACER
(QTY.4)
=
9.14
(232)
7.25
(184)
CONNECTOR
FOR
POWER
SUPPLY
SIDE VIEW
I/O TERMINAL
RESTRAINING
STRAP
DIMENSIONS FOR 5 SLOT RACK
CABLE
ENTRANCE
FROM
BOTTOM
REMOVABLE
I/O
TERMINAL
BLOCK
Î
Î
Î
Î
HINGED
DOOR
DIMENSIONS IN INCHES, MILLIMETERS ARE IN PARENTHESIS
12.60
6.75
(172)
2.24
(57)
6.00
**
(152.4)
.45
(11)
*
.75
(19)
GROUND
STUD
SUPPLY
19.00
(483)
123456789POWER
(320)
18.11
(460)
11.71
(297)
17.04
(433)
FRONT VIEW
ALLOW SUFFICIENT HORIZONTAL CLEARANCE FOR ACCESS TO GROUND STUDS
*
AT EACH END OF THE RACK.
IF THE EXTENSION CABLE IS USED, ALLOW APPROXIMATELY 6 INCH HORIZONTAL
**
CLEARANCE ON THE LEFT SIDE OF THE RACK FOR ACCESS TO THE CONNECTOR.
ALLOWANCE FOR COOLING ( If REQUIRED FOR ADDITIONAL COOLING, RACK FAN
***
ASSEMBLY (IC697ACC721 IS AVAILABLE. )
10.64
(264)
*
GROUND
STUD
.25 DIA.
(TYPICAL)
2
10.47
(266)
a42139
6.00
***
(152.4)
11.50
(292)
6.00
***
(152.4)
23Chapter 2 Installation
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