range from nominally 150V to 300V. Without identifiying this modification, it is necessary to add a compensating Programmable Setting in to produce correct Secondary Voltage and Power. As a Programmable Setting, however, end users could incorrectly enable or disable this feature. With this setting, it is possible to have the adjustment automatically take place in the firmware. The following codes are used to indicate this option:

0x000

Standard 150V Phase-to-Neutral Voltage

0x001

Special 300V Phase-to-Neutral Voltage

0x002-0x0FF

Undefined, treated as 150 Phase-to-Neutral Voltage

Sealing Switch (65365 High): Not all EPM units have the Sealing Switch security feature installed. If installed, the end user can enable the security use of this switch and prevent changes to the device’s Programmable Settings without physical, tamper-evident access to the unit. This

feature cannot be enabled if the switch is not installed; access is permanently denied. The following codes are used to indicate this option:

0x000

No Sealing Switch

0x001

Sealing Switch Installed

0x002-0x0FF

Undefined, treated as No Sealing Switch

Memory (65365 Low): The amount of memory in the EPM 9800. The following codes are used to indicate:

0x002

2048k NVRAM

EPM 9800S

0x003

4096k NVRAM

EPM 9800A

0x004-0x0FF

Undefined, treated as 0k NVRAM

8.109: Flash Control Block (65409-65498)

Description: Flash Control Registers included in this block:

GE Communicator EXT Operation Indicator (65409): When read, this byte reports which Operation Mode is in use and why. If the value is 0x00000, then the Communication Microcontroller is running in Normal Operation. Any non-zero value indicates that the Communication Microcontroller is running in FLASH Operation. Each bit in the Register signals the reason for being in FLASH Operation. The bits are:

Bit 0: Checksum Failure in Code

Bit 1: Checksum Failure in Programmable Settings

Bit 2: Illegal Communication Settings in Programmable Settings

Bit 3: Forced FLASH Operation by Jumper

Bit 4: Requested FLASH Operation by Communication

Bit 5: Requested Default Communication Settings

Bit 6-15: Reserved, should be 0

8-39

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GE EPM 9650/9800 manual Flash Control Block