5PY59JY3 GE Central control module Brand new

Setting Force On/Off by storing initial 

value

Once a force on or force off has been stored to the RX7i, the user 

cannot switch from force on to force off or vice-versa directly by 

downloading initial values. The user can turn off the force by doing a 

download, and then change the force on or off by another download.

CMM COMMREQ restriction Due to an issue in the CMM firmware, the SNP COMMREQ Read 

System Memory (7202) executed on a CMM module does not execute 

correctly for lengths greater than 760 words. Incorrect data is written to 

the SNP Master. Users should not use lengths greater than 760 words.

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 

Rare data corruption errors have been seen on serial communications 

when running at 115K under heavy interrupt load on the RX7i. Under 

heavy load applications, users should restrict serial communications to 

57K or lower.

Synchronized backup unit may log Over 

Sweep faults in constant sweep mode

A synchronized backup unit may report over sweep faults in constant 

sweep mode regardless of the amount of time spent servicing IO, 

logic, and communications in the sweep.

Bus Read or Write may return status of 5 

instead of 4.

In some cases, the Bus Read/Write Status Word returned may be 4 

instead of 5 when the ending address is out of range.

Hardware configuration and initial values 

may not load 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.

CPU sweep time increases during 

overtemperature operation

When the operating temperature of the CPU exceeds the normal 

operating temperature, system variable #OVR_TMP (%SA8) turns ON 

(Fault group 24, error code 0x0001). When this occurs, the sweep time 

periodically increases because the CPU executes a new task to read 

the actual temperature reported by a temperature sensor. This 

increase can be as much as 2 ms.

GBC in expansion rack may fail to power 

up

Occasionally, a Series 90-70 GBC module located in an expansion 

rack may fail to power up when power to that rack is cycled off/on. The 

module’s OK light will flash and then all module lights will go off. Power 

cycle the rack again to recover. (Note: This issue does not affect 90-30 

GBCs.)

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