BINMASTER DPM-100, Инструкция по эксплуатации

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DPM-100 Digital Panel Meter Modbus ® Display
Instruction Manual
64
Scanner Operation
The DPM-100 Display is capable of operating as a
Modbus Master, Slave or Snooper. As a Slave, the
DPM-100 requires connection to a Master device:
PLC, DCS, etc. As a Master, the DPM-100 interfaces
up to sixteen slave devices and can alternately
display their Process Variables. As a Snooper it can
be connected anywhere in the RS-485 bus to read
any of the variables being requested by the Master
device.
Four math channels (C1-C4) are available to perform
operations on any PV or math channel, with adder
and factor constants, and display the results.
Engineering units or tags may be displayed with all
PVs or math channels. Another level of Math
functions can be performed on the resultant math
channel Math2. For example, the operator can use
the Math2 Channel to calculate the Sum of all other
Math Channels, which may have each performed a
different Math function.
The dual-line display can be customized by the user.
Typically, the upper display is used to display the PV,
while the lower display is used to display the tag for
each PV.
Additionally, the scanner can be set up to display any
input or math channel on the upper display and
alternate between tag & units on the lower display.
The relays and analog output can be programmed to
operate based on any PV or math channel.
Front Panel Buttons Operation
Button
Symbol
Description
Press to enter, exit Programming
Mode, or exit max/min readings
Press to move to the previous PV or
math channel
Press to move to the next PV or math
channel
Press once to pause scanning, press
again to resume scanning
Function Keys Operation
During operation, the programmable function keys
operate according to the way they have been
programmed in the
Advanced Features – User
menu.
See Programmable Function Keys User Menu (
user
)
on page
60
for details.
The table above shows the factory default settings for
F1, F2, and F3.
F4 Operation
A digital input, F4, is standard on the scanner. This
digital input is programmed identically to function keys
F1, F2, and F3. The input is triggered with a contact
closure to COM, or with an active low signal. During
operation, F4 operates according to the way is has
been programmed in the
Advanced Features – User
menu. See Programmable Function Keys User Menu
(
user
) on page
60
for details.
Maximum/Minimum Readings
The max & min readings (peak & valley) reached by
the PVs or math channels can be displayed by
assigning the display to max/min through the
Display
Setup menu.
A digital input should be programmed to reset the
max & min readings.