0x000

Not Present

0x001

Present

0x002-0x0FF

Undefined, treated as Not Present

Com Port (65362-65363):In both the 9650 and the 9800, there are options which attach devices to the Communication Ports, internal to the case. Externally Connected devices use communication settings that need to be user programmable. Internally connected options require Fixed Communication Settings to insure that they always function. These bytes are used to indicate that a given communication device is attached to a particular port. The following codes are used to indicate these options:

0x000

232/485

0x001

Display

0x002

INPI (Modem)

0x003

INP10 (Network)

0x004-0x0FF

Undefined, treated as 232/485

232/485 indicates that the communication settings for this port should be user programmable. Display indicates that the port should be Address 1, Modbus RTU, 9600 Baud, 8n1, with no delay. INP1 for EPM 9650 indicates that the port should be Address 1, Modbus ASCII, 57.6k Baud, 8n1, with no delay.

INP1 for EPM 9800 indicates that the port should be Address 1, Modbus ASCII, 38.4 k Baud, 8n1, with no delay.

INP10 indicates that the port should be Address 1, Modbus RTU, 115.2 k Baud, 8n1, with no delay.

For an EPM 9650, all ports should be set to 0x000, indicating a 232 or 485 port, except for Port 2, which can be set for either 232/485, INP1 or INP10. Displays are not integrated into the unit and no port should be set to indicate a display.

For an EPM 9800, Port 2 should be set to Display. This not only sets the Communication

Settings for the proper operation of the display, but it enables several special features for the display that should not be available on other com ports. Depending on the internal connection, INP1 and/or INP10 could be set for other ports.

1 Amp (65364 High)

Some EPM units are produced with five windings around the Toroidal CT within the device, multiplying the current pickup from a nominal 5 Amp to 1 Amp. Without identifying this modification, it is necesssary to introduce a compensating factor into the CT Ratio to produce correct Primary Values for Current and Power. 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 5 Amp Range

0x001

Special 1 Amp Range

0x002-0x0FF

Undefined, treated as 5 Amp Range

300 V (65364 Low)

Similarly, some EPM units are produced with a different Voltage Divider, changing the voltage

8-38

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GE EPM 9650/9800 manual Amp 65364 High, 300 V 65364 Low