20X3353 GE Module cards in stock

CPU may not detect lowbattery condition

An IC693ACC302 battery with very low capacity may still have a terminal voltage high 

enough to report that it is a good battery. In this case, when the battery starts supplying the 

memory power (battery backup), the battery voltage quickly drops to unacceptable levels, 

with little warning to the user before failure. To insure against data loss, users should replace 

batteries in accordance with the guidelines provided in the PACSystems RX7i & RX3i CPU 

Reference Manual, GFK-2222. Additionally, users could save logic and hardware configuration 

to flash.

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 as long as 

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 

controller sweep, even though there is no Loss of Module indication. I/O data exchanged with 

the module is not meaningful until this bit is set by the module. Refer to the Series 90-30 High 

Speed Counter User’s Manual, GFK-0293C, Section 4.7.

Informational fault at 

power up.

Intermittently during power-up, an Informational non-critical CPU software fault may be 

generated with fault extra data of 01 91 01 D6. This fault will have no effect on the normal 

operation of the controller. But, if the hardware watchdog timer expires after this fault and 

before power has been cycled again, then the outputs of I/O modules may hold their last 

state, rather than defaulting to zero.

Extended memory types for IO 

triggers.

%R, %W and %M cannot be used as IO triggers. 

Possible Machine Edition 

inability to connect.

Infrequently, an attempt to connect a programmer to a controller via Ethernet will be 

unsuccessful. The normal connection retry dialog will not be displayed. Rebooting the 

computer that is running the programmer will resolve the behavior.

SNP Update Datagram 

message.

If an Update Datagram message requests 6 or less bits or bytes of data, the controller will 

return a Completion Ack message without Text Buffer. The protocol specifies that the 

returned data will be in the Completion Ack message, but it may not be.