If the unit is an EPM 9650 with regular hardware, RMS values are in units of squared secondary, with two bytes of fraction. That is, each count is 1/65536 of a squared volt.

If the unit is an EPM 9650 with 300 V hardware, RMS values are in units of squared secondary, with 14 bits of fraction. That is, each count is 1/16384 of a squared volt. Units that are 300 V hardware can be identified by the appropriate setting in the programmable settings or Hardware Option for 300V, Modbus Register 0x0FF53.

If the unit is an EPM 9800, RMS values are in units of squared secondary, with 12 bits of fraction. That is, each count is 1/4096 of a squared volt.

Example:

EPM 9650 with regular hardware:

VAN = 0x038B84000 = 14,520.25 v2 secondary, or 120.5 v secondary

EPM 9650 with 300 V hardware:

VAN = 0x038B84000 = 58,081 v2 secondary, or 241 v secondary

EPM 9800:

VAN = 0x038B84000 = 232,324 v2 secondary, or 482 v secondary

The next byte holds eight bits representing the Delta of the High Speed Input States. High Speed Digital Input States are in the following format:

 

 

Table 6.1 High Speed Digital Input States

 

 

 

 

 

 

Bits

 

 

 

7

6

5

4

3

2

1

0

HSI 8

HSI 7

HSI 6

HSI 5

HSI 4

HSI 3

HSI 2

HSI 1

A bit value of 1 means the input changed in the last cycle. A bit value of 0 means the input is closed.

The next byte holds eight bits representing the current states of the High Speed Inputs. High Speed Digital Inputs are in the following format:

 

Table 6.2: Current States of the High Speed Inputs

 

 

 

 

 

Bits

 

 

 

7

6

5

4

3

2

1

0

HSI 8

HSI 7

HSI 6

HSI 5

HSI 4

HSI 3

HSI 2

HSI 1

A bit value of 1 means the input is open. A bit value of 0 means the input is closed.

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GE EPM 9650/9800 manual High Speed Digital Input States