8-38
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, 57.6kBaud, 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 CTwithin 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