CCS WattNode Revenue RWNC-3D-240-MB, Installation And Operation Manual

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50 Operating Instructions
As a security measure, there are three non-resettable energy registers— EnergySumNR ,
EnergyPosSumNR , EnergyNegSumNR —that can never be reset to zero.
ZeroDemand (1621)
The ZeroDemand register can be written with three values (or zero which does nothing). If a
ConfigPasscode has been set, then you must unlock the meter before you can zero demand.
●
1 - Zero DemandMin and DemandMax registers.
●
2 - Zero Demand , DemandA, DemandB, DemandC and DemandApp registers. Start a
new demand interval.
●
3 - Zero DemandMin , DemandMax , Demand , DemandA, DemandB, DemandC and
DemandApp registers. Start a new demand interval.
I/O Pin Options Configuration
IoPinMode (1623)
For details about the I/O pin options registers and configuration, see the Continental Control
Systems website:
http://www.ccontrolsys.com/w/WattNode_Modbus_-_Option_IO .
Communication Registers
Most customers will never need these registers, but they can be useful for special situations. If
you are using these registers to configure multiple WattNode meters, you may want to use the
broadcast address (0) so that all meters will update together. This isn’t permitted for setting the
address, because then multiple devices would share the same address.
The communication configuration can be restored to factory defaults by switching all the DIP
switches to the OFF position and leaving them OFF for 10 seconds, then setting them to the
desired address and baud rate.
ApplyComConfig (1651)
If any of the following communication configuration registers are changed, the new values will
not take effect until “1234” (decimal) is written to this register. This makes it easier to configure
multiple changes and have them all take effect together.
Reads of
ApplyComConfig
will return “1” if there are any pending changes, otherwise “0”.
Address (1652)
This register can override the DIP switch address setting and also allows addresses to be
assigned up to 247 (the DIP switches can only set addresses up to 127). Set this register back to
zero to use the DIP switch setting.
The meter can be ordered with
Option AD
, which factory assigns the address. See Option AD
(p. 20) in the section Setting the Modbus Address for details.
BaudRate (1653)
This register overrides the DIP switch baud rate setting for speeds up to 38,400 baud.
●
0 - Use DIP switch assigned baud rate (9,600 or 19,200 baud)
●
1 - 1,200 baud
●
2 - 2,400 baud
●
3 - 4,800 baud
●
4 - 9,600 baud
●
5 - 19,200 baud
●
6 - 38,400 baud