PACSystems RX3i User manual

PACSystems™ RX3i
IC695NIU001
GFK-2419M Ethernet Network Interface Unit
March 2009
The PACSystems RX3i Ethernet NIU, IC695NIU001,
makes it possible to use PACSystems RX3i and Series
90-30 I/O remotely on an Ethernet network. Once set up
by configuration, data exchange is completely automatic.
System control can be provided by any GE Fanuc master
device capable of exchanging Ethernet Global Data. The
Ethernet NIU automatically provides the controller with
status information in each exchange. The application
program logic in the controller can monitor this status data,
and issue appropriate commands to the Ethernet NIU.
An RX3i Ethernet NIU station consists of:
▪an RX3i Universal Backplane (IC695CHS0xx)
▪an RX3i power supply (IC695PSxxxx)
▪the RX3i Ethernet NIU (IC695NIU001)
▪one or more RX3i Ethernet modules (IC695ETM001)
▪proprietary application software
▪Optional Series 90-30 expansion backplanes.
▪PACSystems RX3i and/or Series 90-30 modules, as
appropriate for the application.
The Ethernet NIU is compatible with the same types of
modules, backplanes, and other equipment as a
PACSystems RX3i CPU. For a list of compatible products,
see the PACSystems RX3i Hardware and Installation
Manual, GFK-2314.
This module requires Machine Edition Logic Developer
software, version 5.51 or later.
Ethernet NIU Features
▪20Kbytes of optional local logic. Supports all
languages except C programming.
▪10 Mbytes of built-in flash memory for local user data
storage.
▪Battery-backed calendar clock.
▪In-system upgradeable firmware.
▪Two serial ports: an RS-485 serial port and an
RS-232 serial port.
▪Supports Ethernet communications via the backplane-
based Ethernet Interface module (IC695ETM001)
▪Data exchange using Ethernet Global Data (EGD)
▪TCP/IP communication services using SRTP
▪Comprehensive station management and diagnostic
tools
▪Supports operation with redundant controllers
▪PACSystems RX7i and RX3i controllers can send
selected COMMREQs to the RX3i ENIU via Ethernet
Global Data. The ENIU executes the COMMREQs and
returns the results to the controller.
▪During EGD configuration, RX3i Ethernet interfaces are
identified by their Backplane/Slot location.
NIU OK
NIU SCANNING I/O
OUTPUTS ENABLED
I/O FORCE
BATTERY
SYSTEM
FAULT
RESET
NIU001
COM 1
COM 2
BATT
COM1 ACTIVE
RUN OUTPUT DISABLE
STOP RUN I/O
ENABLE
COM1 ACTIVE
Ethernet Global Data Features
The Ethernet NIU communicates with its controller via
Ethernet Global Data exchanges. One exchange is used to
send outputs to the ENIU and another exchange is used to
send inputs back to the controller. The ENIU supports
receiving outputs from redundant controllers. By sending the
EGD exchange to a group address both controllers can
receive the inputs. Up to 1300 bytes of outputs can be sent to
a set of ENIUs from a controller. Each ENIU can send up to
1300 bytes of inputs to the controller.
A typical system might consist of a controller with five ENIUs.
The controller sends 1300 bytes of outputs and each ENIU

2 RX3i Ethernet NIU
GFK-2419M
sends 100 bytes of inputs to the controller. This typical
system would have its I/O updates occur in less than 25
milliseconds. If the controller scan time is greater than 25
milliseconds, the update occurs at the controller’s scan
rate. This performance timing is a guideline, not a
guarantee, and assumes that there is no other traffic on
the Ethernet link to the I/O. More performance data for
other system configurations can be found in the Ethernet
NIU Manual, GFK-2196A or later.
ENIU COMMREQ Feature
The ENIU supports selected COMMREQs that are sent to
it by a “C” block application in a PACSystems Rx7i or RX3i
controller. Ladder code is written in the RX7i or RX3i to
interface to the “C” block which results in COMMREQ
commands being sent via a EGD Exchange to the ENIU.
The ENIU executes the COMMREQ and sends the results
back to the RX7i or RX3i via another EGD exchange.
The following COMMREQs are supported:
▪Modbus Master – function codes 1, 2, 3, 4, 5, 6, 7, 15,
16, 17
▪Genius – enable/disable outputs, switch BSM, clear
fault, clear all faults, assign monitor, read diagnostic
▪PROFIBUS Master – Commreqs 1, 2, 4, 5, 6
▪Motion (DSM314/DSM324) – load parameters
▪High Speed Counter – Data command
▪DeviceNet Master – Commreqs 1, 4, 5, 6, 7, 9
▪Analog Module – HART Protocol Commreqs
Operation, Protection, and Module
Status
Operation of this module can be controlled by the three-
position RUN/STOP switch or remotely by an attached
programmer and programming software. Program and
configuration data can be locked through software
passwords. The status of the NIU is indicated by the eight
NIU LEDs on the front of the module. (See “LED
Operation”).
Battery
A three-cell lithium battery pack (IC698ACC701) is
installed as show below. The battery maintains data
memory when power is removed and operates the
calendar clock. Program and initial values are always
loaded from flash when the ENIU powers up. When
replacing the battery, be sure to install a new battery
before disconnecting the old one. If a new battery is
installed when no battery is currently installed, the new
battery must be installed while the CPU has power.
Otherwise, the CPU may not power up. If that happens,
remove the battery, power-cycle the
CPU, then reinstall the battery.
Disposal of lithium batteries
must be done in accordance with
federal, state, and local
regulations. Be sure to consult
with the appropriate regulatory
agencies before disposing of
batteries.
To avoid loss of RAM memory
contents, routine maintenance
procedures should include
scheduled replacement of the NIU’s
lithium battery pack. For information
on estimating battery life, refer to
the PACSystems NIU Reference
Manual, GFK-2222.
Installation
It is the responsibility of the OEM, system integrator, or end
user to properly install the control system equipment for safe
and reliable operation. Installation should not be attempted
without referring to the PACSystems RX3i Hardware and
Installation Manual, GFK-2314.
1. Make sure that backplane power is off.
2. Install the NIU module in backplane 0. The NIU requires
two slots and can use any slots except the highest
numbered (rightmost) slot. It is recommended that the
ENIU be located in slots 2 and 3. For more information
about choosing a slot for the ENIU, see below.
3. Turn on power. The module should power up. When the
NIU has successfully completed initialization, the NIU OK
LED stays on and the NIU SCANNING I/O and EN LEDs
are off.
4. To save battery life, do not connect the battery for the first
time until the ENIU is installed in the backplane and the
backplane powered on. The battery may then be
attached to either of the two terminals in the battery
compartment. Once that is done, the ENIU may be
powered down and normal battery back up operation will
begin.
Backplane Locations for the ENIU
1. The A/C Power Supply (IC695PSAx40) for the RX3i is a
doublewide module whose connector is left-justified as
viewed when installed in a backplane. It cannot be
located in slot 11 of a 12-slot backplane or slot 15 of a
16-slot backplane. No latch mechanism is provided for
the last (rightmost) slot in a backplane, so it is not
RESE
T
B
A
C

RX3i Ethernet NIU 3
GFK-2419M
possible to place the power supply in the second to
last slot.
2. The RX3i ENIU (IC695NIU001) is a doublewide
module whose connector is right justified as viewed
when installed in a backplane. The ENIU is
referenced for configuration and application logic by
the leftmost slot occupied by the entire module, not by
the slot the physical connector is located in. For
example, if the ENIU has its physical connector
inserted in slot 3, the module occupies slots 2 and 3
and the ENIU is referenced as being located in slot 2.
▪The ENIU may be located in slot 0 with its
connector in slot 1.
▪The ENIU cannot be located in slot 11 of a 12-
slot backplane or in slot 15 of a 16-slot
backplane, because its connector cannot be
installed in the slot reserved for an expansion
module.
3. When migrating a Series 90-30 ENIU system to a
PACSystems RX3i ENIU, maintaining the slot 1
location of the ENIU means that only a singlewide
power supply may be used in slot 0. Either DC power
supply can be used (IC695PSD040 or
IC695PSD140). Therefore, if the application must
maintain a slot 1 ENIU and uses an AC power-supply,
the RX3i system must have the RX3i AC power-
supply located in a slot to the right of the RX3i ENIU
in slot 1.
Locating the ENIU in a Slot Other than 1
Before deciding to place the ENIU in a slot other than slot
1, it is important to consider the possible application
migration issues that could arise, as explained below.
Application Program
For Service Request #15 (Read Last-Logged Fault Table
Entry) and Service Request #20 (Read Fault Tables), the
location of ENIU faults is not the standard 0.1 location, but
the slot the ENIU is located in (see above). Logic that
decodes fault table entries retrieved by these service
requests may need updating.
COMMREQs directed to the ENIU (e.g. those directed to
the serial ports of the ENIU) will need to be updated with
the correct ENIU slot reference.
Hardware Configuration
The slot location of the ENIU must be updated in the
hardware configuration to reflect the ENIU’s true location.
Fault Tables
Faults logged for the ENIU in the fault table will not in the
standard 0.1 (backplane.slot) location, but will reflect the
ENIUs actual slot.
Series 90 Controllers
Remote Series 90 controllers that use SRTP Channels
COMMREQs expect the ENIU to be in slot 1 or slot 2. To
support communications with Series 90 SRTP clients such as
Series 90 controllers using SRTP Channels, the RX3i
internally redirects incoming SRTP requests destined for
{backplane 0, slot 1} to {backplane 0, slot 2}, provided that the
ENIU is located in backplane 0 slot 2 (and the remote client
has not issued an SRTP Destination service on the
connection to discover the backplane and slot of the ENIU).
This special redirection permits Series 90-30 applications that
expect the power supply to be located leftmost and the ENIU
to be located to the right of the power supply to function.
Attempts to establish channels with ENIUs in slots other than
1 or 2 will fail if initiated from Series 90 controllers.
HMI and External Communication Devices
All external communication devices that interact with the ENIU
should be checked for compatibility with ENIU slot locations
other than slot 1. Problems may arise with, but are not limited
to, initial connection sequences and fault reporting. Machine
Edition View users should select “GE SRTP” as their
communications driver – it can communicate with an ENIU in
any slot.
Programmer Connection
The programmer can communicate with the NIU via serial port
1, serial port 2, or the backplane-based Ethernet interface.
Connecting a programmer via an Ethernet TCP/IP network
requires a CAT5 standard Ethernet cable with RJ-45
connectors.
Before connecting the programmer and ENIU to the Ethernet
TCP/IP network, set the IP address using the Initial IP
Address software tool. After setting the IP address, connect
the RX3i and the computer running the programming software
to the Ethernet Interface. For detailed information on
programmer connection via Ethernet TCP/IP, refer to the
TCP/IP Ethernet Communications for PACSystems User’s
Manual, GFK-2224.

4 RX3i Ethernet NIU
GFK-2419M
Firmware Upgrades
The ENIU uses non-volatile flash memory for storing the
operating system firmware. This allows firmware to be
updated without disassembling the module or replacing
EPROMs.
To install a firmware upgrade, connect WinLoader to the
NIU RS-232 or RS-485 serial port. When connecting
directly to the NIU, there is no need to specify the
Backplane/Slot location. For upgrades to Intelligent Option
modules (the IC695ETM001, for example), which are
performed indirectly via the NIU serial port, you must
specify a backplane/slot location.
Serial Ports
The NIU has two independent, on-board serial ports,
accessed by connectors on the front of the module. These
ports provide serial interfaces to external devices.
Protocols Supported
Protocol Port 1 Port 2
RTU (slave) Yes Yes
SNP Slave Yes Yes
Serial I/O * Yes Yes
Firmware Upgrade ENIU in STOP/No I/O mode
Message Mode
(C Runtime Library
Functions:
serial read, serial write,
sscanf, sprintf)
Yes Yes
* Modbus Master is supported in application code in Serial
I/O mode.
Serial Port Baud Rates
Protocol Port 1 (RS-232) Port 2 (RS-485)
Modbus RTU Slave
protocol
1200, 2400, 4800, 9600, 19.2K,
38.4K, 57.6K, 115.2K
Message 1200, 2400, 4800, 9600, 19.2K,
38.4K, 57.6K, 115.2K
Firmware Upgrade
via Winloader
2400, 4800, 9600, 19.2K, 38.4K,
57.6K, 115.2K
SNP Slave 1200, 2400, 4800, 9600, 19.2K,
38.4K, 57.6K, 115.2K
Serial I/O 1200, 2400, 4800, 9600, 19.2K,
38.4K, 57.6K, 115.2K
Port 1
Port 1 (COM1) is RS-232 compatible. It has a 9-pin,
female, D-sub connector with a standard pin out. This is a
DCE (data communications equipment) port that allows a
simple straight-through cable to connect with a standard AT-
style RS-232 port. The COM1 Active LED provides the status
of serial port activity.
Port 1 RS-232 Signals
Pin Signal Description
1* NC No Connection
2 TXD Transmit Data
3 RXD Receive Data
4 DSR Data Set Ready
5 0V Signal Ground
6 DTR Data Terminal Ready
7 CTS Clear To Send
8 RTS Request to Send
9 NC No Connection
* Pin 1 is at the bottom right of the connector as viewed from the
front of the module.
Port 2
Port 2 (COM2) is RS-485 compatible. Port 2 has a 15-pin,
female D-sub connector. This port supports the RS-485 to
RS-232 adapter (IC690ACC901). This is a DCE port. The
COM2 Active LED provides the status of serial port activity.
Port 2 RS-485 Signals
Pin Signal Description
1* Shield Cable Shield
2 NC No Connection
3 NC No Connection
4 NC No Connection
5 +5VDC Logic Power**
6 RTS(A) Differential Request to Send
7 0V Signal Ground
8 CTS(B‘) Differential Clear To Send
9*** RT Resistor Termination
10** RD(A‘) Differential Receive Data
11 RD(B‘) Differential Receive Data
12 SD(A) Differential Send Data
13 SD(B) Differential Send Data
14 RTS(B) Differential Request To Send
15 CTS(A’) Differential Clear To Send
* Pin 1 is at the bottom right of the connector as viewed from
the front of the module.
** Pin 5 provides isolated +5VDC power (300mA maximum)
for powering external options.
*** Termination resistance for the RD A’ signal should be
connected on units at the end of the line. To make this
termination, connect a jumper between pins 9 and 10
inside the 15-pin D-shell.

RX3i Ethernet NIU 5
GFK-2419M
Serial Cable Lengths and Shielding
The connection from a NIU serial port COM1 to the serial
port on a computer or other serial device requires a serial
cable. This connection can be made with the
IC200CBL001 cable kit or you can build cables to fit the
needs of your particular application. See the Ethernet NIU
Reference Manual, GFK-2296 for more information on
serial communications, cables, and converters.
Maximum cable lengths (the total length from the NIU to
the last device attached to the serial cable) are:
• Port 1 (RS-232) – 15 meters (50 ft.), shielded cable
optional
• Port 2 (RS-485) – 1200 meters (4000 ft.), shielded
cable required
Configuration
The RX3i NIU and I/O system is configured with Machine
Edition Logic Developer programming software.
Machine Edition automatically populates the Ethernet NIU
target in the folder with the required application code blocks,
and partially prepoulates the EGD Exchanges that are
required for ENIU operation.
The NIU verifies the actual module and backplane
configuration at power-up and periodically during operation.
The actual configuration must be the same as the
programmed configuration. Deviations are reported to the NIU
alarm processor function for configured fault response. Refer
to the Proficy Machine Edition Logic Developer Getting
Started Manual, GFK-1918 and the online help for a
description of configuration functions.
LED Operation
The following table lists the NIU LED functions during normal operation (after initialization sequence is complete).
LED State
On Blinking Off
NIU Operating State
NIU OK On NIU has passed its powerup diagnostics and is
functioning properly.
NIU OK Off NIU problem. RUN and OUTPUTS ENABLED LEDs
may be blinking in an error code pattern, which can be
used by technical support for troubleshooting. This
condition and any error codes should be reported to
your technical support representative.
NIU OK, OUTPUTS ENABLED, NIU SCANNING I/O
Blinking in unison
NIU is in boot mode and is waiting for a firmware update
through serial port.
NIU OK Blinking. Other LEDs off. CPU in Stop/Halt state; possible watchdog timer fault.
Cycle power in Stop mode and refer to fault tables.
NIU SCANNING I/O On NIU is in Run mode
NIU SCANNING I/O Off NIU is in Stop mode.
OUTPUTS ENABLED On Output scan is enabled.
OUTPUTS ENABLED Off Output scan is disabled.
I/O FORCE On Override is active on a bit reference.
BATTERY Blinking Battery is low.
BATTERY On Battery is dead or not attached.
SYSTEM FAULT On NIU is in Stop/Faulted or Stop/Halted mode.
COM1 Blinking
COM2 Blinking
Signal activity on port.

6 RX3i Ethernet NIU
GFK-2419M
Specifications for IC695NIU001
Battery: Memory retention For estimated battery life under various conditions, refer to the PACSystems NIU
Reference Manual, GFK-2222.
Power requirements +3.3 VDC: 1.25 Amps nominal
+5 VDC: 1.0 Amps nominal
Operating Temperature 0°C to 60°C (32°F to 140°F)
Floating point Yes
Embedded
communications
RS-232, RS-485
Serial Protocols supported Modbus RTU Slave, SNP, Serial I/O, Modbus RTU Master by application “C” block
Backplane Dual backplane bus support: RX3i PCI and 90-30-style serial
PCI compatibility System designed to be electrically compliant with PCI 2.2 standard
For environmental specifications and compliance to standards (for example, FCC or European Union Directives), refer to the
PACSystems RX3i Hardware and Installation Manual, GFK-2314.
Ordering Information
Description Catalog Number
RX3i Ethernet Network Interface Unit IC695NIU001
RX3i Ethernet Module IC695ETM001
Package consisting of RX3i Ethernet NIU IC695NIU001 and one Ethernet Transmitter
Module IC695ETM001
IC695NTK001
Package consisting of RX3i Ethernet NIU IC695NIU001 and two Ethernet Transmitter
Modules IC695ETM001
IC695NTK002
Lithium Battery Pack IC698ACC701
Auxiliary Battery Module (optional) IC693ACC302
RX3i Power Supply, 40 Watt High Capacity Universal AC Power Supply IC695PSA040
RX3i Power Supply, 40 Watt High Capacity 24 VDC Power Supply IC695PSD040
RX3i Multi-Purpose Power Supply, 40 Watt High Capacity Universal AC IC695PSA140
RX3i Multi-Purpose Power Supply, 40 Watt High Capacity 24 VDC IC695PSD140
[Optional] RS-232 Cable IC200CBL001
Rx3i Standard 12 Slot Backplane IC695CHS012
Rx3i Standard 16 Slot Backplane IC695CHS016
Note: For Conformal Coat option, please consult the factory for price and availability.

RX3i Ethernet NIU 7
GFK-2419M
Release History
Catalog Number FW Revision Comments
IC695NIU001-DM 5.70 Enables support that is functionally identical to the IC695CMX128 for the
IC695RMX128.
IC695NIU001-CL 5.61 Corrects the problem described in GFK-2419L.
IC695NIU001-CL 5.60 Supports the IC695PMM335 PACMotion Multi-Axis Motion Controller and other
new features, and corrects the problems listed in GFK-2419L.
IC695NIU001-CK 5.50 Supports Run-mode store of EGD.
Adds support for LREAL data type.
IC695NIU001-CJ 5.03 Corrects problem of Corrupted User Memory issue after a power cycle.
Corrects problem in 5.02 firmware only, in which loss of certain IC694 and IC693
modules in an expansion rack caused the outputs of similar modules in expansion
racks to be disabled when the “Loss of Module” fault was configured as
diagnostic.
IC695NIU001-BH 5.02 Fixed an issue where certain IC694 and IC693 modules in the main rack did not
transition to stop mode after a “Loss of Module” fault was logged.
IC695NIU001-BG 5.00 Supports Proficy Process Systems rel. 1.00, Scan_Set_IO, Quality Function
Blocks, Optional UDF Parameters, IEC Transitionals, SNPT Network time sync.
IC695NIU001-BF 3.83 Support for PACSystems RX3i Serial Communications modules IC695CMM002
and CMM004.
IC695NIU001-BE 3.82
IC695NIU001-BD 3.81 Support for eight ETM modules in the main backplane.
IC695NIU001-AC 3.52
IC695NIU001-AB 3.51
IC695NIU001-AA 3.50 Initial Release
Important Product Information for this Release
This release enables support that is functionally identical to the IC695CMX128 for the IC695RMX128 on all Rx3i CPUs.
Updates
The IC695NIU001 is field upgradeable to firmware version 5.70 using the firmware upgrade utility. To upgrade an existing
NIU001 to firmware version 5.70, you will need the 44A753013-G12 upgrade kit, which can be downloaded from
http://support.gefanuc.com/.

8 RX3i Ethernet NIU
GFK-2419M
Functional Compatibility
Product Compatible Versions
Proficy® Machine Edition Logic
Developer
Proficy® Machine Edition Logic Developer 5.9 SIM1 or later versions required to use
the new Release 5.70 features with the RX3i CPU.
Proficy® Machine Edition Logic Developer 5.9 is required to use Release 5.60
features with the RX3i CPU.
Proficy® Machine Edition Logic Developer 5.8 is required to use Release 5.50
features with the RX3i CPU.
Proficy® Machine Edition Logic Developer 5.7 is required to use Release 5.0
features with the RX3i CPU.
Machine Edition Logic Developer 5.5 with Service Pack 1 is required to use the eight
ETM feature with the RX3i Ethernet NIU.
Release 5.5 SIM 1 or later is required to enable use of the RX3i Ethernet NIU.
C Toolkit Compatibility C Toolkit Release 5.50 is required to use the LREAL data type.
All C blocks must be recompiled using the new toolkit before downloading to a CPU
that contains Release 5.00 firmware.
Backplanes, power supplies, and
system modules
As listed in the PACSystems RC3i System Manual, GFK-2314C or later.
New NIU Features and Enhancements in Release 5.70
New Module Supported
 This release enables support that is functionally identical to the IC695CMX128 for the IC695RMX128 on all Rx3i
CPUs (CPU310, CPU320, CRU320, NIU001, and CMU310.)
Restrictions and Open Issues in this Release
Subject Description
The Ethernet module fails to
exchange EGD properly
during power cycling
Very rarely, after experiencing multiple rapid power cycles, the CPU may fail to
establish communication with one or more modules in the backplane at power up.
When this occurs a "Loss of” or “missing option module" fault will be logged in the
controller fault table. To recover from this issue, cycle power again.
The following faults will be logged if this issue occurs:
Loss of, or missing option module
Error Code 31
Group 4
Action 3:Fatal
Task Num 9
Reset of option module
Error Code 11
Group 8
Action 2:Diagnostic
Task Num 9
Loss of, or missing option module
Error Code 94
Group 4
Action 3:Fatal
Task Num 9
Switching between Serial &
PCI modules in a slot causes
module to not be recognized.
If a Serial module (IC694) is physically installed in the slot where a PCI (IC695)
module is configured, a module mismatch fault will be logged.
To correct this condition the configuration must match the module that is physically
present in the rack and the system must be power cycled. Simply downloading the
new configuration will not correct this issue.

RX3i Ethernet NIU 9
GFK-2419M
Subject Description
Loss of Power Supplies after
firmware update A Loss of Power Supplies after firmware update may occur. This does not happen
with all firmware updates and will not occur if the system is power cycled after the
firmware upgrade has completed. The following fault is displayed when this issue
occurs:
Loss of, or missing option module
Error Code 36
Group 4
Action 3:Fatal
Task Num 9
Fault Extra Data: 01 58 02 4f 80 08 0a 07 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00
To correct this condition, power cycle the system.
Battery installation When installing a new battery, when there currently is no battery installed, the
battery must be installed while the CPU has power. Failing to follow this procedure
could result in the CPU not powering up.
If a battery is installed while power is off (and there was no battery previously
installed), and the CPU fails to power up, simply remove the battery, power cycle
the CPU and then install the battery.
Hot Swapping some Analog
modules slowly result in
modules not being
recognized
Occasionally during a hot insertion (hot swap) of IC695 Non-Isolated Analog Input
Modules, input channels may take up to 2 seconds to reflect actual input values
after the module ok bit is enabled in the module status word. This only occurs
when hot insertion has been done slowly (i.e. approximately 1.5 seconds to insert
the module).
Ethernet Disconnect During
Word for Word Change If the Ethernet connection is broken during a word–for-word change, the
programmer may not allow a subsequent word-for-word change after reconnecting.
Recommendation: go offline and then back online again.
Simultaneous Clears, Loads
and Stores Not Supported Multiple programmers may not change ENIU contents at the same time. The
programming software may generate an error during the operation. Simultaneous
loads from a single ENIU are allowed.
Power Cycle During Write to
Flash The ENIU is configured to power up from flash and if is power-cycled while writing
to flash, a fault is generated on power up.
Hardware Configuration Not
Equal After Changing Target
Name
If a hardware configuration is stored to flash and the name of the target is
subsequently changed in the programming software, the hardware configuration
will go Not Equal and will not Verify as equal.
Controller and IO Fault
Tables May Need to be
Cleared Twice to Clear
Faulted State
Both Controller and IO fault tables may need to be cleared to take the ENIU out of
Stop/Fault mode. If one of the tables contains a recurring fault, the order in which
the tables is cleared may be significant. Recommendation: if the ENIU is still in
Stop/Fault mode after both tables are cleared, try clearing the fault tables again.
Setting Force On/Off by
Storing Initial Value After a force on or force off has been stored to the ENIU, it cannot be switched
from force on to force off or vice-versa by downloading initial values.
Recommendation: turn off the force by doing a download, and then change the
force on or off by another download.
Number of Active Programs
Returned as Zero The SNP request Return Controller Type and ID currently returns the number of
active programs as zero.
Serial I/O Failure at 115K
During Heavy Interrupt Load Rarely, data corruption errors occur during serial communications when running at
115K if there is a heavy interrupt load on the ENIU. Recommendation: under heavy
load applications, restrict serial communications to 57K or lower.
SNP ID not always provided Unlike the Series 90-30, the RX3i ENIU’s SNP ID does not appear in the Machine
Edition programmer Show Status display. Service Request 11 will always return
zeros.
Second programmer can
change logic while in Test &
Edit mode
While currently active in a Test and Edit session using Machine Edition on one PC,
Machine Edition running on another PC is not prevented from storing new logic to
the ENIU.

10 RX3i Ethernet NIU
GFK-2419M
Subject Description
Must Have Logic if
Powering-Up From Flash If no user logic exists in the CPU RAM when a write to flash is performed, the CPU
may not properly load from flash after a power cycle. In order to guarantee proper
power up from flash, insure that both hardware configuration and logic have been
stored to RAM before writing to flash.
ENIU may not detect low-
battery condition PACSystems ENIUs may not detect a low-battery condition early enough to
provide a meaningful warning to replace the battery. A battery with very low
capacity may still have a terminal voltage high enough to report that it is a good
battery. When the battery starts supplying the memory power (battery backup), the
battery voltage quickly drops to unacceptable levels, and it may fail.
Recommendation: replace batteries in accordance with the guidelines provided in
the CPU Reference Manual, GFK-2222.
Two loss of module faults
for Universal Analog Module Occasionally, the hot removal of the Universal Analog Input Module
(IC695ALG600) results in two “Loss of I/O Module” faults instead of one.
Power up of Series 90-30
HSC module may take up to
20 seconds
As power is applied to a 90-30 High-Speed Counter, the "module ready" bit in the
status bits returned each sweep from the module may not be set for as long as 20
seconds after the first ENIU sweep, even though there is no "loss of module"
indication. I/O data exchanged with the module is not meaningful until the module
has set this bit.
Informational fault at power
up Intermittently during power-up, an Informational non-critical ENIU software fault
may be generated with fault extra data of 01 91 01 D6. This fault has no effect on
the normal operation of the ENIU. But if the hardware watchdog timer expires after
this fault and before power has been cycled again, the outputs of I/O modules may
hold their last state, rather than defaulting to zero.
Extended Memory Types for
I/O Triggers %R, %W and %M cannot be used as I/O triggers.
Possible Machine Edition
inability to connect Infrequently, an attempt to connect a programmer to an ENIU via Ethernet is
unsuccessful. The normal connection retry dialog is not displayed.
Recommendation: Reboot the computer that is running the programmer.
SNP Update Datagram
message If an Update Datagram message requests 6 or fewer bits or bytes of data, the
ENIU returns a Completion Ack without Text Buffer. The protocol specifies that
the returned data should be in the Completion Ack message, but it may not be.
GBC30 may not resume
operation after power cycle In rare instances, a GBC30 in an expansion backplane may not resume normal
operation after a power cycle of either the expansion backplane or the main
backplane.
To restore GBC operation, power cycle the rack again.
Configuration of third-party
modules Do not specify a length of 0 in the configuration of a third-party module. The
module will not work properly in the system.
Power supply status after
ENIU firmware update The ENIU reports a “Loss of or missing option module” fault for the IC695PSD140
RX3i power supply following an update of ENIU firmware. The slot appears empty
in the programmer’s online status detail view. The power supply continues to
operate normally. Recommendation: Power cycle to restore normal status
reporting.
Power supply status after
power cycling Rarely, turning a power supply on or off may not result in an add or loss fault.
Also, the slot will appear empty in the programmer’s online status detail view. The
power supply continues to operate normally. Power cycle to restore normal status
reporting.
Don’t use multiple targets If the hardware configuration is stored from one target and logic is stored from a
different target, powering-up from flash will not work. The observed behavior is
that, following a power up from flash, Machine Edition reports hardware
configuration and logic "not equal".
Missing Loss of Terminal
slock fault The IC695ALG600/608/616 analog input modules do not produce a “Loss of
terminal block” fault if the hardware configuration is stored or the module is hot-
inserted when the terminal block is not locked into place.