16
Terminal Emulation Setup
If you are using a PC with terminal emulation software (such as PROCOMM)
to communicate with the CFR, use the following setup:
Emulation Type:
VT100 or compatible
Duplex Mode:
Half Duplex
Xon/Xoff Flow Control:
SID: ON, IID: OFF
RTS/CTS Flow Control:
SID: OFF, IID: ON
Line Wrap:
ON
Screen Scroll:
ON
CR Translation:
CR
Back-Space:
N/A (See NOTE)
Break Length:
N/A
Inquiry:
N/A
NOTE: Back-Space and Delete characters are ignored by the CFR. In the
event of an incorrectly typed command, you should press ENTER.
Connecting an External Modem
SID equipped units can be connected to an external modem. A shielded
null-modem serial cable, DE-9 male to DB-25 male, is required to connect the
external modem to CFR. The most common ways to connect are by using one of
the following cable/adapter sets:
1. A null-modem cable with DE-9 male to DB-25 male ends (shown below).
2. A null-modem cable with DB-25 male to DB-25 male ends and a 9-25 adapter.
3. A standard “straight-through” cable with DE-9 male to DB-25 female and a null-
modem adapter which has the TX and RX swapped in the adapter.
These cables and adapters are available commercially. Fig. 10 shows the
minimum set of connections required for making a null-modem cable. See Section
“4.2 External Modem Configuration” to configure the modem and CFR.
To CFR
Serial Port
To Modem
Serial Port
DB-25 Male (DTE)
DE-9 Male
2.6
RS–232 Communication Options,
continued
2. FEATURES
Fig. 10:
RS–232 Connector Cable Wiring (SID
to computer, terminal or modem)
57
5.11 Maintenance Parameters
,
continued
5. RS-232 TERMINAL COMMUNICATION
Slow Detect Hi Ref
Increasing this value will make the UPS more sensitive to a slow,
high amplitude line disturbance (sustained overvoltage) by lowering the
overvoltage detection level.
NOTE: The Slow Detect Hys Hi Ref should also be adjusted by the same
amount.
Slow Detect Hys Lo Ref
Increasing this value will raise the voltage level at which the UPS
will
resume LINE POWER operation after a line disturbance has been
corrected. This setting should normally be 1 - 3 settings
above the Slow
Detect Lo Ref setting.
Slow Detect Hys Hi Ref
Increasing this value will lower the voltage level at which the
UPS will
resume LINE POWER operation after an overvoltage condition
has been corrected. This setting should normally be the same, or 1 - 3
settings
above, the Slow Detect Hi Ref setting.
Max. PLL Slew Rate
Increasing this value will reduce the speed at which the Phase
Locked Loop (PLL) will change the output frequency while the UPS
resumes LINE PRESENT operation after a line fault has been corrected.
It will also increase the time required to resume LINE PRESENT operation.
Battery Warning Ref
Increasing this value will increase the time before a LOW
BATTERY WARNING occurs, thus allowing the batteries to drain more of
their charge before a warning is given. Decreasing this value will allow
more run time between LOW BATTERY WARNING and SHUTDOWN.
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