GE EPM 5200 User Manual
Page 28
CHAPTER 4: COMMUNICATION INSTALLATION
24
EPM 5000 series Advanced Power Meters GE Multilin
Y
OU MAY WANT TO USE A
M
ODEM
M
ANAGER
RS485-RS232 C
ONVERTER
When speaking to most RS-485 or RS-232C based devices, the remote modem must be programmed for
the communication to work. This task is often quite complicated because modems are quirky when talking
to remote devices. To make this task easier, EIG has designed a Modem Manager RS-485 to RS-232C
converter. This device automatically programs the modem to the proper configuration. Also, if you have
poor telephone lines, modem manager acts as a line buffer, making the communication more reliable.
I. MODEM CONNECTED TO COMPUTER (ORIGINATE MODEM)
Programming the Modem
Comply with the modem’s instruction manual and follow these instructions:
R
ESTORE
M
ODEM TO
F
ACTORY
S
ETTINGS
:
• This procedure erases all previously programmed settings.
S
ET
M
ODEM TO
D
ISPLAY
R
ESULT
C
ODES
:
• The device uses the result codes.
S
ET
M
ODEM TO
V
ERBAL
R
ESULT
C
ODE
:
• The device uses the verbal codes.
S
ET
M
ODEM TO
I
GNORE
DTR S
IGNAL
:
• Necessary for the device to ensure connection with originate modem.
S
ET
M
ODEM TO
D
ISABLE
F
LOW
C
ONTROL
:
• Necessary to communicate with remote modem connected to device.
T
ELL
M
ODEM TO
W
RITE THE
N
EW
S
ETTINGS TO
A
CTIVATE
P
ROFILE
:
• Places these settings into nonvolatile memory; the settings take effect after the modem powers up.
II. MODEM CONNECTED TO THE DEVICE (REMOTE MODEM)
Programming the Modem
Comply with the modem’s instruction manual and follow these instructions:
R
ESTORE
M
ODEM TO
F
ACTORY
S
ETTINGS
:
• This procedure erases all previously programmed settings.
S
ET
M
ODEM TO
A
UTO
A
NSWER ON
N
R
INGS
:
• Sets the remote modem to answer the call after n rings.
S
ET THE
M
ODEM TO
A
UTO
N
EGOTIATE
M
ODE
:
• Sets the remote to auto negotiate to communicate successfully with EPM 5300P and other devices in
the modem.
S
ET
M
ODEM TO
R
ETURN
N
UMERIC
R
ESULT
C
ODES
:
• Increases speed connection with EPM 5300P.
S
ET
M
ODEM TO
I
GNORE
DTR S
IGNAL
:
• Necessary for device to ensure connection with originate modem.
S
ET
M
ODEM TO
D
ISABLE
F
LOW
C
ONTROL
:
• Necessary to communicate with remote modem connected to EPM 5300P.
T
ELL THE
M
ODEM TO
W
RITE THE
N
EW
S
ETTINGS TO
A
CTIVATE
P
ROFILE
:
• Places new settings into nonvolatile memory; settings take effect after the modem powers up.